-- -- OPR_SANITY -- Sanity checks for common errors in making operator/procedure system tables: -- pg_operator, pg_proc, pg_cast, pg_conversion, pg_aggregate, pg_am, -- pg_amop, pg_amproc, pg_opclass, pg_opfamily, pg_index. -- -- Every test failure in this file should be closely inspected. -- The description of the failing test should be read carefully before -- adjusting the expected output. In most cases, the queries should -- not find *any* matching entries. -- -- NB: we assume the oidjoins test will have caught any dangling links, -- that is OID or REGPROC fields that are not zero and do not match some -- row in the linked-to table. However, if we want to enforce that a link -- field can't be 0, we have to check it here. -- -- NB: run this test earlier than the create_operator test, because -- that test creates some bogus operators...
-- **************** pg_proc ****************
-- Look for illegal values in pg_proc fields.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prolang = 0OR p1.prorettype = 0OR
p1.pronargs < 0OR
p1.pronargdefaults < 0OR
p1.pronargdefaults > p1.pronargs OR
array_lower(p1.proargtypes, 1) != 0OR
array_upper(p1.proargtypes, 1) != p1.pronargs-1OR 0::oid = ANY (p1.proargtypes) OR
procost <= 0OR CASEWHEN proretset THEN prorows <= 0ELSE prorows != 0 END OR
prokind NOTIN ('f', 'a', 'w', 'p') OR
provolatile NOTIN ('i', 's', 'v') OR
proparallel NOTIN ('s', 'r', 'u');
-- prosrc should never be null; it can be empty only if prosqlbody isn't null SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE prosrc ISNULL; SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE (prosrc = ''OR prosrc = '-') AND prosqlbody ISNULL;
-- proretset should only be set for normal functions SELECT p1.oid, p1.proname FROM pg_proc AS p1 WHERE proretset AND prokind != 'f';
-- currently, no built-in functions should be SECURITY DEFINER; -- this might change in future, but there will probably never be many. SELECT p1.oid, p1.proname FROM pg_proc AS p1 WHERE prosecdef ORDERBY1;
-- pronargdefaults should be 0 iff proargdefaults is null SELECT p1.oid, p1.proname FROM pg_proc AS p1 WHERE (pronargdefaults <> 0) != (proargdefaults ISNOTNULL);
-- probin should be non-empty for C functions, null everywhere else SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE prolang = 13AND (probin ISNULLOR probin = ''OR probin = '-');
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE prolang != 13AND probin ISNOTNULL;
-- Look for conflicting proc definitions (same names and input datatypes). -- (This test should be dead code now that we have the unique index -- pg_proc_proname_args_nsp_index, but I'll leave it in anyway.)
SELECT p1.oid, p1.proname, p2.oid, p2.proname FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.proname = p2.proname AND
p1.pronargs = p2.pronargs AND
p1.proargtypes = p2.proargtypes;
-- Considering only built-in procs (prolang = 12), look for multiple uses -- of the same internal function (ie, matching prosrc fields). It's OK to -- have several entries with different pronames for the same internal function, -- but conflicts in the number of arguments and other critical items should -- be complained of. (We don't check data types here; see next query.) -- Note: ignore aggregate functions here, since they all point to the same -- dummy built-in function.
SELECT p1.oid, p1.proname, p2.oid, p2.proname FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid < p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
(p1.prokind != 'a'OR p2.prokind != 'a') AND
(p1.prolang != p2.prolang OR
p1.prokind != p2.prokind OR
p1.prosecdef != p2.prosecdef OR
p1.proleakproof != p2.proleakproof OR
p1.proisstrict != p2.proisstrict OR
p1.proretset != p2.proretset OR
p1.provolatile != p2.provolatile OR
p1.pronargs != p2.pronargs);
-- Look for uses of different type OIDs in the argument/result type fields -- for different aliases of the same built-in function. -- This indicates that the types are being presumed to be binary-equivalent, -- or that the built-in function is prepared to deal with different types. -- That's not wrong, necessarily, but we make lists of all the types being -- so treated. Note that the expected output of this part of the test will -- need to be modified whenever new pairs of types are made binary-equivalent, -- or when new polymorphic built-in functions are added! -- Note: ignore aggregate functions here, since they all point to the same -- dummy built-in function. Likewise, ignore range and multirange constructor -- functions.
SELECTDISTINCT p1.prorettype::regtype, p2.prorettype::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
p1.prosrc NOTLIKE E'range\\_constructor_'AND
p2.prosrc NOTLIKE E'range\\_constructor_'AND
p1.prosrc NOTLIKE E'multirange\\_constructor_'AND
p2.prosrc NOTLIKE E'multirange\\_constructor_'AND
(p1.prorettype < p2.prorettype) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[0]::regtype, p2.proargtypes[0]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
p1.prosrc NOTLIKE E'range\\_constructor_'AND
p2.prosrc NOTLIKE E'range\\_constructor_'AND
p1.prosrc NOTLIKE E'multirange\\_constructor_'AND
p2.prosrc NOTLIKE E'multirange\\_constructor_'AND
(p1.proargtypes[0] < p2.proargtypes[0]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[1]::regtype, p2.proargtypes[1]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
p1.prosrc NOTLIKE E'range\\_constructor_'AND
p2.prosrc NOTLIKE E'range\\_constructor_'AND
p1.prosrc NOTLIKE E'multirange\\_constructor_'AND
p2.prosrc NOTLIKE E'multirange\\_constructor_'AND
(p1.proargtypes[1] < p2.proargtypes[1]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[2]::regtype, p2.proargtypes[2]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[2] < p2.proargtypes[2]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[3]::regtype, p2.proargtypes[3]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[3] < p2.proargtypes[3]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[4]::regtype, p2.proargtypes[4]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[4] < p2.proargtypes[4]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[5]::regtype, p2.proargtypes[5]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[5] < p2.proargtypes[5]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[6]::regtype, p2.proargtypes[6]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[6] < p2.proargtypes[6]) ORDERBY1, 2;
SELECTDISTINCT p1.proargtypes[7]::regtype, p2.proargtypes[7]::regtype FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid != p2.oid AND
p1.prosrc = p2.prosrc AND
p1.prolang = 12AND p2.prolang = 12AND
p1.prokind != 'a'AND p2.prokind != 'a'AND
(p1.proargtypes[7] < p2.proargtypes[7]) ORDERBY1, 2;
-- Look for functions that return type "internal" and do not have any -- "internal" argument. Such a function would be a security hole since -- it might be used to call an internal function from an SQL command. -- As of 7.3 this query should find only internal_in, which is safe because -- it always throws an error when called.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype = 'internal'::regtype ANDNOT 'internal'::regtype = ANY (p1.proargtypes);
-- Look for functions that return a polymorphic type and do not have any -- polymorphic argument. Calls of such functions would be unresolvable -- at parse time. As of 9.6 this query should find only some input functions -- and GiST support functions associated with these pseudotypes.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype IN
('anyelement'::regtype, 'anyarray'::regtype, 'anynonarray'::regtype, 'anyenum'::regtype) ANDNOT
('anyelement'::regtype = ANY (p1.proargtypes) OR 'anyarray'::regtype = ANY (p1.proargtypes) OR 'anynonarray'::regtype = ANY (p1.proargtypes) OR 'anyenum'::regtype = ANY (p1.proargtypes) OR 'anyrange'::regtype = ANY (p1.proargtypes) OR 'anymultirange'::regtype = ANY (p1.proargtypes)) ORDERBY2;
-- anyrange and anymultirange are tighter than the rest, can only resolve -- from each other
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype IN ('anyrange'::regtype, 'anymultirange'::regtype) ANDNOT
('anyrange'::regtype = ANY (p1.proargtypes) OR 'anymultirange'::regtype = ANY (p1.proargtypes)) ORDERBY2;
-- similarly for the anycompatible family
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype IN
('anycompatible'::regtype, 'anycompatiblearray'::regtype, 'anycompatiblenonarray'::regtype) ANDNOT
('anycompatible'::regtype = ANY (p1.proargtypes) OR 'anycompatiblearray'::regtype = ANY (p1.proargtypes) OR 'anycompatiblenonarray'::regtype = ANY (p1.proargtypes) OR 'anycompatiblerange'::regtype = ANY (p1.proargtypes)) ORDERBY2;
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype = 'anycompatiblerange'::regtype ANDNOT 'anycompatiblerange'::regtype = ANY (p1.proargtypes) ORDERBY2;
-- Look for functions that accept cstring and are neither datatype input -- functions nor encoding conversion functions. It's almost never a good -- idea to use cstring input for a function meant to be called from SQL; -- text should be used instead, because cstring lacks suitable casts. -- As of 9.6 this query should find only cstring_out and cstring_send. -- However, we must manually exclude shell_in, which might or might not be -- rejected by the EXISTS clause depending on whether there are currently -- any shell types.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE'cstring'::regtype = ANY (p1.proargtypes) ANDNOTEXISTS(SELECT1FROM pg_type WHERE typinput = p1.oid) ANDNOTEXISTS(SELECT1FROM pg_conversion WHERE conproc = p1.oid) AND p1.oid != 'shell_in(cstring)'::regprocedure ORDERBY1;
-- Likewise, look for functions that return cstring and aren't datatype output -- functions nor typmod output functions. -- As of 9.6 this query should find only cstring_in and cstring_recv. -- However, we must manually exclude shell_out.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE p1.prorettype = 'cstring'::regtype ANDNOTEXISTS(SELECT1FROM pg_type WHERE typoutput = p1.oid) ANDNOTEXISTS(SELECT1FROM pg_type WHERE typmodout = p1.oid) AND p1.oid != 'shell_out(void)'::regprocedure ORDERBY1;
-- Check for length inconsistencies between the various argument-info arrays.
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proallargtypes ISNOTNULLAND
array_length(proallargtypes,1) < array_length(proargtypes,1);
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proargmodes ISNOTNULLAND
array_length(proargmodes,1) < array_length(proargtypes,1);
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proargnames ISNOTNULLAND
array_length(proargnames,1) < array_length(proargtypes,1);
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proallargtypes ISNOTNULLAND proargmodes ISNOTNULLAND
array_length(proallargtypes,1) <> array_length(proargmodes,1);
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proallargtypes ISNOTNULLAND proargnames ISNOTNULLAND
array_length(proallargtypes,1) <> array_length(proargnames,1);
SELECT p1.oid, p1.proname FROM pg_proc as p1 WHERE proargmodes ISNOTNULLAND proargnames ISNOTNULLAND
array_length(proargmodes,1) <> array_length(proargnames,1);
-- Check that proallargtypes matches proargtypes SELECT p1.oid, p1.proname, p1.proargtypes, p1.proallargtypes, p1.proargmodes FROM pg_proc as p1 WHERE proallargtypes ISNOTNULLAND
ARRAY(SELECT unnest(proargtypes)) <>
ARRAY(SELECT proallargtypes[i] FROM generate_series(1, array_length(proallargtypes, 1)) g(i) WHERE proargmodes ISNULLOR proargmodes[i] IN ('i', 'b', 'v'));
-- Check for type of the variadic array parameter's elements. -- provariadic should be ANYOID if the type of the last element is ANYOID, -- ANYELEMENTOID if the type of the last element is ANYARRAYOID, -- ANYCOMPATIBLEOID if the type of the last element is ANYCOMPATIBLEARRAYOID, -- and otherwise the element type corresponding to the array type.
SELECT oid::regprocedure, provariadic::regtype, proargtypes::regtype[] FROM pg_proc WHERE provariadic != 0 ANDcase proargtypes[array_length(proargtypes, 1)-1] WHEN'"any"'::regtype THEN'"any"'::regtype WHEN'anyarray'::regtype THEN'anyelement'::regtype WHEN'anycompatiblearray'::regtype THEN'anycompatible'::regtype ELSE (SELECT t.oid FROM pg_type t WHERE t.typarray = proargtypes[array_length(proargtypes, 1)-1])
END != provariadic;
-- Check that all and only those functions with a variadic type have -- a variadic argument. SELECT oid::regprocedure, proargmodes, provariadic FROM pg_proc WHERE (proargmodes ISNOTNULLAND'v' = any(proargmodes)) ISDISTINCTFROM
(provariadic != 0);
-- Check for prosupport functions with the wrong signature SELECT p1.oid, p1.proname, p2.oid, p2.proname FROM pg_proc AS p1, pg_proc AS p2 WHERE p2.oid = p1.prosupport AND
(p2.prorettype != 'internal'::regtype OR p2.proretset OR p2.pronargs != 1 OR p2.proargtypes[0] != 'internal'::regtype);
-- Insist that all built-in pg_proc entries have descriptions SELECT p1.oid, p1.proname FROM pg_proc as p1 LEFTJOIN pg_description as d ON p1.tableoid = d.classoid and p1.oid = d.objoid and d.objsubid = 0 WHERE d.classoid ISNULLAND p1.oid <= 9999;
-- List of built-in leakproof functions -- -- Leakproof functions should only be added after carefully -- scrutinizing all possibly executed codepaths for possible -- information leaks. Don't add functions here unless you know what a -- leakproof function is. If unsure, don't mark it as such.
-- temporarily disable fancy output, so catalog changes create less diff noise
\a\t
SELECT p1.oid::regprocedure FROM pg_proc p1 JOIN pg_namespace pn ON pronamespace = pn.oid WHERE nspname = 'pg_catalog'AND proleakproof ORDERBY1;
-- Check that functions without argument are not marked as leakproof. SELECT p1.oid::regprocedure FROM pg_proc p1 JOIN pg_namespace pn ON pronamespace = pn.oid WHERE nspname = 'pg_catalog'AND proleakproof AND pronargs = 0 ORDERBY1;
-- restore normal output mode
\a\t
-- List of functions used by libpq's fe-lobj.c -- -- If the output of this query changes, you probably broke libpq. -- lo_initialize() assumes that there will be at most one match for -- each listed name. select proname, oid from pg_catalog.pg_proc where proname in ( 'lo_open', 'lo_close', 'lo_creat', 'lo_create', 'lo_unlink', 'lo_lseek', 'lo_lseek64', 'lo_tell', 'lo_tell64', 'lo_truncate', 'lo_truncate64', 'loread', 'lowrite') and pronamespace = (select oid from pg_catalog.pg_namespace where nspname = 'pg_catalog') orderby1;
-- Check that all immutable functions are marked parallel safe SELECT p1.oid, p1.proname FROM pg_proc AS p1 WHERE provolatile = 'i'AND proparallel = 'u';
-- **************** pg_cast ****************
-- Catch bogus values in pg_cast columns (other than cases detected by -- oidjoins test).
SELECT * FROM pg_cast c WHERE castsource = 0OR casttarget = 0OR castcontext NOTIN ('e', 'a', 'i') OR castmethod NOTIN ('f', 'b' ,'i');
-- Check that castfunc is nonzero only for cast methods that need a function, -- and zero otherwise
SELECT * FROM pg_cast c WHERE (castmethod = 'f'AND castfunc = 0) OR (castmethod IN ('b', 'i') AND castfunc <> 0);
-- Look for casts to/from the same type that aren't length coercion functions. -- (We assume they are length coercions if they take multiple arguments.) -- Such entries are not necessarily harmful, but they are useless.
SELECT * FROM pg_cast c WHERE castsource = casttarget AND castfunc = 0;
SELECT c.* FROM pg_cast c, pg_proc p WHERE c.castfunc = p.oid AND p.pronargs < 2AND castsource = casttarget;
-- Look for cast functions that don't have the right signature. The -- argument and result types in pg_proc must be the same as, or binary -- compatible with, what it says in pg_cast. -- As a special case, we allow casts from CHAR(n) that use functions -- declared to take TEXT. This does not pass the binary-coercibility test -- because CHAR(n)-to-TEXT normally invokes rtrim(). However, the results -- are the same, so long as the function is one that ignores trailing blanks.
SELECT c.* FROM pg_cast c, pg_proc p WHERE c.castfunc = p.oid AND
(p.pronargs < 1OR p.pronargs > 3 ORNOT (binary_coercible(c.castsource, p.proargtypes[0]) OR (c.castsource = 'character'::regtype AND
p.proargtypes[0] = 'text'::regtype)) ORNOT binary_coercible(p.prorettype, c.casttarget));
SELECT c.* FROM pg_cast c, pg_proc p WHERE c.castfunc = p.oid AND
((p.pronargs > 1AND p.proargtypes[1] != 'int4'::regtype) OR
(p.pronargs > 2AND p.proargtypes[2] != 'bool'::regtype));
-- Look for binary compatible casts that do not have the reverse -- direction registered as well, or where the reverse direction is not -- also binary compatible. This is legal, but usually not intended.
-- As of 7.4, this finds the casts from text and varchar to bpchar, because -- those are binary-compatible while the reverse way goes through rtrim().
-- As of 8.2, this finds the cast from cidr to inet, because that is a -- trivial binary coercion while the other way goes through inet_to_cidr().
-- As of 8.3, this finds the casts from xml to text, varchar, and bpchar, -- because those are binary-compatible while the reverse goes through -- texttoxml(), which does an XML syntax check.
-- As of 9.1, this finds the cast from pg_node_tree to text, which we -- intentionally do not provide a reverse pathway for.
SELECT castsource::regtype, casttarget::regtype, castfunc, castcontext FROM pg_cast c WHERE c.castmethod = 'b'AND NOTEXISTS (SELECT1FROM pg_cast k WHERE k.castmethod = 'b'AND
k.castsource = c.casttarget AND
k.casttarget = c.castsource);
-- Look for illegal values in pg_conversion fields.
SELECT c.oid, c.conname FROM pg_conversion as c WHERE c.conproc = 0OR
pg_encoding_to_char(conforencoding) = ''OR
pg_encoding_to_char(contoencoding) = '';
-- Look for conprocs that don't have the expected signature.
SELECT p.oid, p.proname, c.oid, c.conname FROM pg_proc p, pg_conversion c WHERE p.oid = c.conproc AND
(p.prorettype != 'int4'::regtype OR p.proretset OR
p.pronargs != 6OR
p.proargtypes[0] != 'int4'::regtype OR
p.proargtypes[1] != 'int4'::regtype OR
p.proargtypes[2] != 'cstring'::regtype OR
p.proargtypes[3] != 'internal'::regtype OR
p.proargtypes[4] != 'int4'::regtype OR
p.proargtypes[5] != 'bool'::regtype);
-- Check for conprocs that don't perform the specific conversion that -- pg_conversion alleges they do, by trying to invoke each conversion -- on some simple ASCII data. (The conproc should throw an error if -- it doesn't accept the encodings that are passed to it.) -- Unfortunately, we can't test non-default conprocs this way, because -- there is no way to ask convert() to invoke them, and we cannot call -- them directly from SQL. But there are no non-default built-in -- conversions anyway. -- (Similarly, this doesn't cope with any search path issues.)
SELECT c.oid, c.conname FROM pg_conversion as c WHERE condefault AND convert('ABC'::bytea, pg_encoding_to_char(conforencoding),
pg_encoding_to_char(contoencoding)) != 'ABC';
-- **************** pg_operator ****************
-- Look for illegal values in pg_operator fields.
SELECT o1.oid, o1.oprname FROM pg_operator as o1 WHERE (o1.oprkind != 'b'AND o1.oprkind != 'l') OR
o1.oprresult = 0OR o1.oprcode = 0;
-- Look for missing or unwanted operand types
SELECT o1.oid, o1.oprname FROM pg_operator as o1 WHERE (o1.oprleft = 0and o1.oprkind != 'l') OR
(o1.oprleft != 0and o1.oprkind = 'l') OR
o1.oprright = 0;
-- Look for conflicting operator definitions (same names and input datatypes).
SELECT o1.oid, o1.oprcode, o2.oid, o2.oprcode FROM pg_operator AS o1, pg_operator AS o2 WHERE o1.oid != o2.oid AND
o1.oprname = o2.oprname AND
o1.oprkind = o2.oprkind AND
o1.oprleft = o2.oprleft AND
o1.oprright = o2.oprright;
-- Look for commutative operators that don't commute. -- DEFINITIONAL NOTE: If A.oprcom = B, then x A y has the same result as y B x. -- We expect that B will always say that B.oprcom = A as well; that's not -- inherently essential, but it would be inefficient not to mark it so.
SELECT o1.oid, o1.oprcode, o2.oid, o2.oprcode FROM pg_operator AS o1, pg_operator AS o2 WHERE o1.oprcom = o2.oid AND
(o1.oprkind != 'b'OR
o1.oprleft != o2.oprright OR
o1.oprright != o2.oprleft OR
o1.oprresult != o2.oprresult OR
o1.oid != o2.oprcom);
-- Look for negatory operators that don't agree. -- DEFINITIONAL NOTE: If A.oprnegate = B, then both A and B must yield -- boolean results, and (x A y) == ! (x B y), or the equivalent for -- single-operand operators. -- We expect that B will always say that B.oprnegate = A as well; that's not -- inherently essential, but it would be inefficient not to mark it so. -- Also, A and B had better not be the same operator.
SELECT o1.oid, o1.oprcode, o2.oid, o2.oprcode FROM pg_operator AS o1, pg_operator AS o2 WHERE o1.oprnegate = o2.oid AND
(o1.oprkind != o2.oprkind OR
o1.oprleft != o2.oprleft OR
o1.oprright != o2.oprright OR
o1.oprresult != 'bool'::regtype OR
o2.oprresult != 'bool'::regtype OR
o1.oid != o2.oprnegate OR
o1.oid = o2.oid);
-- Make a list of the names of operators that are claimed to be commutator -- pairs. This list will grow over time, but before accepting a new entry -- make sure you didn't link the wrong operators.
SELECTDISTINCT o1.oprname AS op1, o2.oprname AS op2 FROM pg_operator o1, pg_operator o2 WHERE o1.oprcom = o2.oid AND o1.oprname <= o2.oprname ORDERBY1, 2;
-- Likewise for negator pairs.
SELECTDISTINCT o1.oprname AS op1, o2.oprname AS op2 FROM pg_operator o1, pg_operator o2 WHERE o1.oprnegate = o2.oid AND o1.oprname <= o2.oprname ORDERBY1, 2;
-- A mergejoinable or hashjoinable operator must be binary, must return -- boolean, and must have a commutator (itself, unless it's a cross-type -- operator).
SELECT o1.oid, o1.oprname FROM pg_operator AS o1 WHERE (o1.oprcanmerge OR o1.oprcanhash) ANDNOT
(o1.oprkind = 'b'AND o1.oprresult = 'bool'::regtype AND o1.oprcom != 0);
-- What's more, the commutator had better be mergejoinable/hashjoinable too.
SELECT o1.oid, o1.oprname, o2.oid, o2.oprname FROM pg_operator AS o1, pg_operator AS o2 WHERE o1.oprcom = o2.oid AND
(o1.oprcanmerge != o2.oprcanmerge OR
o1.oprcanhash != o2.oprcanhash);
-- Mergejoinable operators should appear as equality members of btree index -- opfamilies.
SELECT o1.oid, o1.oprname FROM pg_operator AS o1 WHERE o1.oprcanmerge ANDNOTEXISTS
(SELECT1FROM pg_amop WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
amopopr = o1.oid AND amopstrategy = 3);
-- And the converse.
SELECT o1.oid, o1.oprname, p.amopfamily FROM pg_operator AS o1, pg_amop p WHERE amopopr = o1.oid AND amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND amopstrategy = 3 ANDNOT o1.oprcanmerge;
-- Hashable operators should appear as members of hash index opfamilies.
SELECT o1.oid, o1.oprname FROM pg_operator AS o1 WHERE o1.oprcanhash ANDNOTEXISTS
(SELECT1FROM pg_amop WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash') AND
amopopr = o1.oid AND amopstrategy = 1);
-- And the converse.
SELECT o1.oid, o1.oprname, p.amopfamily FROM pg_operator AS o1, pg_amop p WHERE amopopr = o1.oid AND amopmethod = (SELECT oid FROM pg_am WHERE amname = 'hash') ANDNOT o1.oprcanhash;
-- Check that each operator defined in pg_operator matches its oprcode entry -- in pg_proc. Easiest to do this separately for each oprkind.
SELECT o1.oid, o1.oprname, p1.oid, p1.proname FROM pg_operator AS o1, pg_proc AS p1 WHERE o1.oprcode = p1.oid AND
o1.oprkind = 'b'AND
(p1.pronargs != 2 ORNOT binary_coercible(p1.prorettype, o1.oprresult) ORNOT binary_coercible(o1.oprleft, p1.proargtypes[0]) ORNOT binary_coercible(o1.oprright, p1.proargtypes[1]));
SELECT o1.oid, o1.oprname, p1.oid, p1.proname FROM pg_operator AS o1, pg_proc AS p1 WHERE o1.oprcode = p1.oid AND
o1.oprkind = 'l'AND
(p1.pronargs != 1 ORNOT binary_coercible(p1.prorettype, o1.oprresult) ORNOT binary_coercible(o1.oprright, p1.proargtypes[0]) OR o1.oprleft != 0);
-- If the operator is mergejoinable or hashjoinable, its underlying function -- should not be volatile.
SELECT o1.oid, o1.oprname, p1.oid, p1.proname FROM pg_operator AS o1, pg_proc AS p1 WHERE o1.oprcode = p1.oid AND
(o1.oprcanmerge OR o1.oprcanhash) AND
p1.provolatile = 'v';
-- If oprrest is set, the operator must return boolean, -- and it must link to a proc with the right signature -- to be a restriction selectivity estimator. -- The proc signature we want is: float8 proc(internal, oid, internal, int4)
SELECT o1.oid, o1.oprname, p2.oid, p2.proname FROM pg_operator AS o1, pg_proc AS p2 WHERE o1.oprrest = p2.oid AND
(o1.oprresult != 'bool'::regtype OR
p2.prorettype != 'float8'::regtype OR p2.proretset OR
p2.pronargs != 4OR
p2.proargtypes[0] != 'internal'::regtype OR
p2.proargtypes[1] != 'oid'::regtype OR
p2.proargtypes[2] != 'internal'::regtype OR
p2.proargtypes[3] != 'int4'::regtype);
-- If oprjoin is set, the operator must be a binary boolean op, -- and it must link to a proc with the right signature -- to be a join selectivity estimator. -- The proc signature we want is: float8 proc(internal, oid, internal, int2, internal) -- (Note: the old signature with only 4 args is still allowed, but no core -- estimator should be using it.)
SELECT o1.oid, o1.oprname, p2.oid, p2.proname FROM pg_operator AS o1, pg_proc AS p2 WHERE o1.oprjoin = p2.oid AND
(o1.oprkind != 'b'OR o1.oprresult != 'bool'::regtype OR
p2.prorettype != 'float8'::regtype OR p2.proretset OR
p2.pronargs != 5OR
p2.proargtypes[0] != 'internal'::regtype OR
p2.proargtypes[1] != 'oid'::regtype OR
p2.proargtypes[2] != 'internal'::regtype OR
p2.proargtypes[3] != 'int2'::regtype OR
p2.proargtypes[4] != 'internal'::regtype);
-- Insist that all built-in pg_operator entries have descriptions SELECT o1.oid, o1.oprname FROM pg_operator as o1 LEFTJOIN pg_description as d ON o1.tableoid = d.classoid and o1.oid = d.objoid and d.objsubid = 0 WHERE d.classoid ISNULLAND o1.oid <= 9999;
-- Check that operators' underlying functions have suitable comments, -- namely 'implementation of XXX operator'. (Note: it's not necessary to -- put such comments into pg_proc.dat; initdb will generate them as needed.) -- In some cases involving legacy names for operators, there are multiple -- operators referencing the same pg_proc entry, so ignore operators whose -- comments say they are deprecated. -- We also have a few functions that are both operator support and meant to -- be called directly; those should have comments matching their operator. WITH funcdescs AS ( SELECT p.oid as p_oid, proname, o.oid as o_oid,
pd.description as prodesc, 'implementation of ' || oprname || ' operator'as expecteddesc,
od.description as oprdesc FROM pg_proc p JOIN pg_operator o ON oprcode = p.oid LEFTJOIN pg_description pd ON
(pd.objoid = p.oid and pd.classoid = p.tableoid and pd.objsubid = 0) LEFTJOIN pg_description od ON
(od.objoid = o.oid and od.classoid = o.tableoid and od.objsubid = 0) WHERE o.oid <= 9999
) SELECT * FROM funcdescs WHERE prodesc ISDISTINCTFROM expecteddesc AND oprdesc NOTLIKE'deprecated%' AND prodesc ISDISTINCTFROM oprdesc;
-- Show all the operator-implementation functions that have their own -- comments. This should happen only in cases where the function and -- operator syntaxes are both documented at the user level. -- This should be a pretty short list; it's mostly legacy cases. WITH funcdescs AS ( SELECT p.oid as p_oid, proname, o.oid as o_oid,
pd.description as prodesc, 'implementation of ' || oprname || ' operator'as expecteddesc,
od.description as oprdesc FROM pg_proc p JOIN pg_operator o ON oprcode = p.oid LEFTJOIN pg_description pd ON
(pd.objoid = p.oid and pd.classoid = p.tableoid and pd.objsubid = 0) LEFTJOIN pg_description od ON
(od.objoid = o.oid and od.classoid = o.tableoid and od.objsubid = 0) WHERE o.oid <= 9999
) SELECT p_oid, proname, prodesc FROM funcdescs WHERE prodesc ISDISTINCTFROM expecteddesc AND oprdesc NOTLIKE'deprecated%' ORDERBY1;
-- Operators that are commutator pairs should have identical volatility -- and leakproofness markings on their implementation functions. SELECT o1.oid, o1.oprcode, o2.oid, o2.oprcode FROM pg_operator AS o1, pg_operator AS o2, pg_proc AS p1, pg_proc AS p2 WHERE o1.oprcom = o2.oid AND p1.oid = o1.oprcode AND p2.oid = o2.oprcode AND
(p1.provolatile != p2.provolatile OR
p1.proleakproof != p2.proleakproof);
-- Likewise for negator pairs. SELECT o1.oid, o1.oprcode, o2.oid, o2.oprcode FROM pg_operator AS o1, pg_operator AS o2, pg_proc AS p1, pg_proc AS p2 WHERE o1.oprnegate = o2.oid AND p1.oid = o1.oprcode AND p2.oid = o2.oprcode AND
(p1.provolatile != p2.provolatile OR
p1.proleakproof != p2.proleakproof);
-- Btree comparison operators' functions should have the same volatility -- and leakproofness markings as the associated comparison support function. SELECT pp.oid::regprocedure as proc, pp.provolatile as vp, pp.proleakproof as lp,
po.oid::regprocedure as opr, po.provolatile as vo, po.proleakproof as lo FROM pg_proc pp, pg_proc po, pg_operator o, pg_amproc ap, pg_amop ao WHERE pp.oid = ap.amproc AND po.oid = o.oprcode AND o.oid = ao.amopopr AND
ao.amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND
ao.amopfamily = ap.amprocfamily AND
ao.amoplefttype = ap.amproclefttype AND
ao.amoprighttype = ap.amprocrighttype AND
ap.amprocnum = 1AND
(pp.provolatile != po.provolatile OR
pp.proleakproof != po.proleakproof) ORDERBY1;
-- **************** pg_aggregate ****************
-- Look for illegal values in pg_aggregate fields.
SELECT ctid, aggfnoid::oid FROM pg_aggregate as a WHERE aggfnoid = 0OR aggtransfn = 0OR
aggkind NOTIN ('n', 'o', 'h') OR
aggnumdirectargs < 0OR
(aggkind = 'n'AND aggnumdirectargs > 0) OR
aggfinalmodify NOTIN ('r', 's', 'w') OR
aggmfinalmodify NOTIN ('r', 's', 'w') OR
aggtranstype = 0OR aggtransspace < 0OR aggmtransspace < 0;
-- Make sure the matching pg_proc entry is sensible, too.
SELECT a.aggfnoid::oid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggfnoid = p.oid AND
(p.prokind != 'a'OR p.proretset OR p.pronargs < a.aggnumdirectargs);
-- Make sure there are no prokind = PROKIND_AGGREGATE pg_proc entries without matches.
SELECT oid, proname FROM pg_proc as p WHERE p.prokind = 'a'AND NOTEXISTS (SELECT1FROM pg_aggregate a WHERE a.aggfnoid = p.oid);
-- If there is no finalfn then the output type must be the transtype.
SELECT a.aggfnoid::oid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggfnoid = p.oid AND
a.aggfinalfn = 0AND p.prorettype != a.aggtranstype;
-- Cross-check transfn against its entry in pg_proc. SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr WHERE a.aggfnoid = p.oid AND
a.aggtransfn = ptr.oid AND
(ptr.proretset ORNOT (ptr.pronargs = CASEWHEN a.aggkind = 'n'THEN p.pronargs + 1 ELSE greatest(p.pronargs - a.aggnumdirectargs, 1) + 1 END) ORNOT binary_coercible(ptr.prorettype, a.aggtranstype) ORNOT binary_coercible(a.aggtranstype, ptr.proargtypes[0]) OR (p.pronargs > 0AND NOT binary_coercible(p.proargtypes[0], ptr.proargtypes[1])) OR (p.pronargs > 1AND NOT binary_coercible(p.proargtypes[1], ptr.proargtypes[2])) OR (p.pronargs > 2AND NOT binary_coercible(p.proargtypes[2], ptr.proargtypes[3])) OR (p.pronargs > 3AND NOT binary_coercible(p.proargtypes[3], ptr.proargtypes[4])) -- we could carry the check further, but 4 args is enough for now OR (p.pronargs > 4)
);
-- Cross-check finalfn (if present) against its entry in pg_proc.
SELECT a.aggfnoid::oid, p.proname, pfn.oid, pfn.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS pfn WHERE a.aggfnoid = p.oid AND
a.aggfinalfn = pfn.oid AND
(pfn.proretset OR NOT binary_coercible(pfn.prorettype, p.prorettype) OR NOT binary_coercible(a.aggtranstype, pfn.proargtypes[0]) OR CASEWHEN a.aggfinalextra THEN pfn.pronargs != p.pronargs + 1 ELSE pfn.pronargs != a.aggnumdirectargs + 1 END OR (pfn.pronargs > 1AND NOT binary_coercible(p.proargtypes[0], pfn.proargtypes[1])) OR (pfn.pronargs > 2AND NOT binary_coercible(p.proargtypes[1], pfn.proargtypes[2])) OR (pfn.pronargs > 3AND NOT binary_coercible(p.proargtypes[2], pfn.proargtypes[3])) -- we could carry the check further, but 4 args is enough for now OR (pfn.pronargs > 4)
);
-- If transfn is strict then either initval should be non-NULL, or -- input type should match transtype so that the first non-null input -- can be assigned as the state value.
SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr WHERE a.aggfnoid = p.oid AND
a.aggtransfn = ptr.oid AND ptr.proisstrict AND
a.agginitval ISNULLAND NOT binary_coercible(p.proargtypes[0], a.aggtranstype);
-- Check for inconsistent specifications of moving-aggregate columns.
SELECT ctid, aggfnoid::oid FROM pg_aggregate as a WHERE aggmtranstype != 0AND
(aggmtransfn = 0OR aggminvtransfn = 0);
SELECT ctid, aggfnoid::oid FROM pg_aggregate as a WHERE aggmtranstype = 0AND
(aggmtransfn != 0OR aggminvtransfn != 0OR aggmfinalfn != 0OR
aggmtransspace != 0OR aggminitval ISNOTNULL);
-- If there is no mfinalfn then the output type must be the mtranstype.
SELECT a.aggfnoid::oid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggfnoid = p.oid AND
a.aggmtransfn != 0AND
a.aggmfinalfn = 0AND p.prorettype != a.aggmtranstype;
-- Cross-check mtransfn (if present) against its entry in pg_proc. SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr WHERE a.aggfnoid = p.oid AND
a.aggmtransfn = ptr.oid AND
(ptr.proretset ORNOT (ptr.pronargs = CASEWHEN a.aggkind = 'n'THEN p.pronargs + 1 ELSE greatest(p.pronargs - a.aggnumdirectargs, 1) + 1 END) ORNOT binary_coercible(ptr.prorettype, a.aggmtranstype) ORNOT binary_coercible(a.aggmtranstype, ptr.proargtypes[0]) OR (p.pronargs > 0AND NOT binary_coercible(p.proargtypes[0], ptr.proargtypes[1])) OR (p.pronargs > 1AND NOT binary_coercible(p.proargtypes[1], ptr.proargtypes[2])) OR (p.pronargs > 2AND NOT binary_coercible(p.proargtypes[2], ptr.proargtypes[3])) -- we could carry the check further, but 3 args is enough for now OR (p.pronargs > 3)
);
-- Cross-check minvtransfn (if present) against its entry in pg_proc. SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr WHERE a.aggfnoid = p.oid AND
a.aggminvtransfn = ptr.oid AND
(ptr.proretset ORNOT (ptr.pronargs = CASEWHEN a.aggkind = 'n'THEN p.pronargs + 1 ELSE greatest(p.pronargs - a.aggnumdirectargs, 1) + 1 END) ORNOT binary_coercible(ptr.prorettype, a.aggmtranstype) ORNOT binary_coercible(a.aggmtranstype, ptr.proargtypes[0]) OR (p.pronargs > 0AND NOT binary_coercible(p.proargtypes[0], ptr.proargtypes[1])) OR (p.pronargs > 1AND NOT binary_coercible(p.proargtypes[1], ptr.proargtypes[2])) OR (p.pronargs > 2AND NOT binary_coercible(p.proargtypes[2], ptr.proargtypes[3])) -- we could carry the check further, but 3 args is enough for now OR (p.pronargs > 3)
);
-- Cross-check mfinalfn (if present) against its entry in pg_proc.
SELECT a.aggfnoid::oid, p.proname, pfn.oid, pfn.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS pfn WHERE a.aggfnoid = p.oid AND
a.aggmfinalfn = pfn.oid AND
(pfn.proretset OR NOT binary_coercible(pfn.prorettype, p.prorettype) OR NOT binary_coercible(a.aggmtranstype, pfn.proargtypes[0]) OR CASEWHEN a.aggmfinalextra THEN pfn.pronargs != p.pronargs + 1 ELSE pfn.pronargs != a.aggnumdirectargs + 1 END OR (pfn.pronargs > 1AND NOT binary_coercible(p.proargtypes[0], pfn.proargtypes[1])) OR (pfn.pronargs > 2AND NOT binary_coercible(p.proargtypes[1], pfn.proargtypes[2])) OR (pfn.pronargs > 3AND NOT binary_coercible(p.proargtypes[2], pfn.proargtypes[3])) -- we could carry the check further, but 4 args is enough for now OR (pfn.pronargs > 4)
);
-- If mtransfn is strict then either minitval should be non-NULL, or -- input type should match mtranstype so that the first non-null input -- can be assigned as the state value.
SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr WHERE a.aggfnoid = p.oid AND
a.aggmtransfn = ptr.oid AND ptr.proisstrict AND
a.aggminitval ISNULLAND NOT binary_coercible(p.proargtypes[0], a.aggmtranstype);
-- mtransfn and minvtransfn should have same strictness setting.
SELECT a.aggfnoid::oid, p.proname, ptr.oid, ptr.proname, iptr.oid, iptr.proname FROM pg_aggregate AS a, pg_proc AS p, pg_proc AS ptr, pg_proc AS iptr WHERE a.aggfnoid = p.oid AND
a.aggmtransfn = ptr.oid AND
a.aggminvtransfn = iptr.oid AND
ptr.proisstrict != iptr.proisstrict;
-- Check that all combine functions have signature -- combine(transtype, transtype) returns transtype
SELECT a.aggfnoid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggcombinefn = p.oid AND
(p.pronargs != 2OR
p.prorettype != p.proargtypes[0] OR
p.prorettype != p.proargtypes[1] OR NOT binary_coercible(a.aggtranstype, p.proargtypes[0]));
-- Check that no combine function for an INTERNAL transtype is strict.
SELECT a.aggfnoid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggcombinefn = p.oid AND
a.aggtranstype = 'internal'::regtype AND p.proisstrict;
-- serialize/deserialize functions should be specified only for aggregates -- with transtype internal and a combine function, and we should have both -- or neither of them.
SELECT aggfnoid, aggtranstype, aggserialfn, aggdeserialfn FROM pg_aggregate WHERE (aggserialfn != 0OR aggdeserialfn != 0) AND (aggtranstype != 'internal'::regtype OR aggcombinefn = 0OR
aggserialfn = 0OR aggdeserialfn = 0);
-- Check that all serialization functions have signature -- serialize(internal) returns bytea -- Also insist that they be strict; it's wasteful to run them on NULLs.
SELECT a.aggfnoid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggserialfn = p.oid AND
(p.prorettype != 'bytea'::regtype OR p.pronargs != 1OR
p.proargtypes[0] != 'internal'::regtype OR NOT p.proisstrict);
-- Check that all deserialization functions have signature -- deserialize(bytea, internal) returns internal -- Also insist that they be strict; it's wasteful to run them on NULLs.
SELECT a.aggfnoid, p.proname FROM pg_aggregate as a, pg_proc as p WHERE a.aggdeserialfn = p.oid AND
(p.prorettype != 'internal'::regtype OR p.pronargs != 2OR
p.proargtypes[0] != 'bytea'::regtype OR
p.proargtypes[1] != 'internal'::regtype OR NOT p.proisstrict);
-- Check that aggregates which have the same transition function also have -- the same combine, serialization, and deserialization functions. -- While that isn't strictly necessary, it's fishy if they don't.
SELECT a.aggfnoid, a.aggcombinefn, a.aggserialfn, a.aggdeserialfn,
b.aggfnoid, b.aggcombinefn, b.aggserialfn, b.aggdeserialfn FROM
pg_aggregate a, pg_aggregate b WHERE
a.aggfnoid < b.aggfnoid AND a.aggtransfn = b.aggtransfn AND
(a.aggcombinefn != b.aggcombinefn OR a.aggserialfn != b.aggserialfn OR a.aggdeserialfn != b.aggdeserialfn);
-- Cross-check aggsortop (if present) against pg_operator. -- We expect to find entries for bool_and, bool_or, every, max, and min.
SELECTDISTINCT proname, oprname FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid ORDERBY1, 2;
-- Check datatypes match
SELECT a.aggfnoid::oid, o.oid FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND
(oprkind != 'b'OR oprresult != 'boolean'::regtype OR oprleft != p.proargtypes[0] OR oprright != p.proargtypes[0]);
-- Check operator is a suitable btree opfamily member
SELECT a.aggfnoid::oid, o.oid FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND NOTEXISTS(SELECT1FROM pg_amop WHERE amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') AND amopopr = o.oid AND amoplefttype = o.oprleft AND amoprighttype = o.oprright);
-- Check correspondence of btree strategies and names
SELECTDISTINCT proname, oprname, amopstrategy FROM pg_operator AS o, pg_aggregate AS a, pg_proc AS p,
pg_amop as ao WHERE a.aggfnoid = p.oid AND a.aggsortop = o.oid AND
amopopr = o.oid AND
amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree') ORDERBY1, 2;
-- Check that there are not aggregates with the same name and different -- numbers of arguments. While not technically wrong, we have a project policy -- to avoid this because it opens the door for confusion in connection with -- ORDER BY: novices frequently put the ORDER BY in the wrong place. -- See the fate of the single-argument form of string_agg() for history. -- (Note: we don't forbid users from creating such aggregates; the policy is -- just to think twice before creating built-in aggregates like this.) -- The only aggregates that should show up here are count(x) and count(*).
SELECT p1.oid::regprocedure, p2.oid::regprocedure FROM pg_proc AS p1, pg_proc AS p2 WHERE p1.oid < p2.oid AND p1.proname = p2.proname AND
p1.prokind = 'a'AND p2.prokind = 'a'AND
array_dims(p1.proargtypes) != array_dims(p2.proargtypes) ORDERBY1;
-- For the same reason, built-in aggregates with default arguments are no good.
SELECT oid, proname FROM pg_proc AS p WHERE prokind = 'a'AND proargdefaults ISNOTNULL;
-- For the same reason, we avoid creating built-in variadic aggregates, except -- that variadic ordered-set aggregates are OK (since they have special syntax -- that is not subject to the misplaced ORDER BY issue).
SELECT p.oid, proname FROM pg_proc AS p JOIN pg_aggregate AS a ON a.aggfnoid = p.oid WHERE prokind = 'a'AND provariadic != 0AND a.aggkind = 'n';
-- **************** pg_opfamily ****************
-- Look for illegal values in pg_opfamily fields
SELECT f.oid FROM pg_opfamily as f WHERE f.opfmethod = 0OR f.opfnamespace = 0;
-- Look for opfamilies having no opclasses. While most validation of -- opfamilies is now handled by AM-specific amvalidate functions, that's -- driven from pg_opclass entries below, so an empty opfamily would not -- get noticed.
SELECT oid, opfname FROM pg_opfamily f WHERENOTEXISTS (SELECT1FROM pg_opclass WHERE opcfamily = f.oid);
-- **************** pg_opclass ****************
-- Look for illegal values in pg_opclass fields
SELECT c1.oid FROM pg_opclass AS c1 WHERE c1.opcmethod = 0OR c1.opcnamespace = 0OR c1.opcfamily = 0 OR c1.opcintype = 0;
-- opcmethod must match owning opfamily's opfmethod
SELECT c1.oid, f1.oid FROM pg_opclass AS c1, pg_opfamily AS f1 WHERE c1.opcfamily = f1.oid AND c1.opcmethod != f1.opfmethod;
-- There should not be multiple entries in pg_opclass with opcdefault true -- and the same opcmethod/opcintype combination.
SELECT c1.oid, c2.oid FROM pg_opclass AS c1, pg_opclass AS c2 WHERE c1.oid != c2.oid AND
c1.opcmethod = c2.opcmethod AND c1.opcintype = c2.opcintype AND
c1.opcdefault AND c2.opcdefault;
-- Ask access methods to validate opclasses -- (this replaces a lot of SQL-level checks that used to be done in this file)
SELECT oid, opcname FROM pg_opclass WHERENOT amvalidate(oid);
-- **************** pg_am ****************
-- Look for illegal values in pg_am fields
SELECT a1.oid, a1.amname FROM pg_am AS a1 WHERE a1.amhandler = 0;
-- Check for index amhandler functions with the wrong signature
SELECT a1.oid, a1.amname, p1.oid, p1.proname FROM pg_am AS a1, pg_proc AS p1 WHERE p1.oid = a1.amhandler AND a1.amtype = 'i'AND
(p1.prorettype != 'index_am_handler'::regtype OR p1.proretset OR p1.pronargs != 1 OR p1.proargtypes[0] != 'internal'::regtype);
-- Check for table amhandler functions with the wrong signature
SELECT a1.oid, a1.amname, p1.oid, p1.proname FROM pg_am AS a1, pg_proc AS p1 WHERE p1.oid = a1.amhandler AND a1.amtype = 't'AND
(p1.prorettype != 'table_am_handler'::regtype OR p1.proretset OR p1.pronargs != 1 OR p1.proargtypes[0] != 'internal'::regtype);
-- **************** pg_amop ****************
-- Look for illegal values in pg_amop fields
SELECT a1.amopfamily, a1.amopstrategy FROM pg_amop as a1 WHERE a1.amopfamily = 0OR a1.amoplefttype = 0OR a1.amoprighttype = 0 OR a1.amopopr = 0OR a1.amopmethod = 0OR a1.amopstrategy < 1;
SELECT a1.amopfamily, a1.amopstrategy FROM pg_amop as a1 WHERENOT ((a1.amoppurpose = 's'AND a1.amopsortfamily = 0) OR
(a1.amoppurpose = 'o'AND a1.amopsortfamily <> 0));
-- amopmethod must match owning opfamily's opfmethod
SELECT a1.oid, f1.oid FROM pg_amop AS a1, pg_opfamily AS f1 WHERE a1.amopfamily = f1.oid AND a1.amopmethod != f1.opfmethod;
-- Make a list of all the distinct operator names being used in particular -- strategy slots. This is a bit hokey, since the list might need to change -- in future releases, but it's an effective way of spotting mistakes such as -- swapping two operators within a family.
SELECTDISTINCT amopmethod, amopstrategy, oprname FROM pg_amop a1 LEFTJOIN pg_operator o1 ON amopopr = o1.oid ORDERBY1, 2, 3;
-- Check that all opclass search operators have selectivity estimators. -- This is not absolutely required, but it seems a reasonable thing -- to insist on for all standard datatypes.
SELECT a1.amopfamily, a1.amopopr, o1.oid, o1.oprname FROM pg_amop AS a1, pg_operator AS o1 WHERE a1.amopopr = o1.oid AND a1.amoppurpose = 's'AND
(o1.oprrest = 0OR o1.oprjoin = 0);
-- Check that each opclass in an opfamily has associated operators, that is -- ones whose oprleft matches opcintype (possibly by coercion).
SELECT c1.opcname, c1.opcfamily FROM pg_opclass AS c1 WHERENOTEXISTS(SELECT1FROM pg_amop AS a1 WHERE a1.amopfamily = c1.opcfamily AND binary_coercible(c1.opcintype, a1.amoplefttype));
-- Check that each operator listed in pg_amop has an associated opclass, -- that is one whose opcintype matches oprleft (possibly by coercion). -- Otherwise the operator is useless because it cannot be matched to an index. -- (In principle it could be useful to list such operators in multiple-datatype -- btree opfamilies, but in practice you'd expect there to be an opclass for -- every datatype the family knows about.)
SELECT a1.amopfamily, a1.amopstrategy, a1.amopopr FROM pg_amop AS a1 WHERENOTEXISTS(SELECT1FROM pg_opclass AS c1 WHERE c1.opcfamily = a1.amopfamily AND binary_coercible(c1.opcintype, a1.amoplefttype));
-- Operators that are primary members of opclasses must be immutable (else -- it suggests that the index ordering isn't fixed). Operators that are -- cross-type members need only be stable, since they are just shorthands -- for index probe queries.
SELECT a1.amopfamily, a1.amopopr, o1.oprname, p1.prosrc FROM pg_amop AS a1, pg_operator AS o1, pg_proc AS p1 WHERE a1.amopopr = o1.oid AND o1.oprcode = p1.oid AND
a1.amoplefttype = a1.amoprighttype AND
p1.provolatile != 'i';
SELECT a1.amopfamily, a1.amopopr, o1.oprname, p1.prosrc FROM pg_amop AS a1, pg_operator AS o1, pg_proc AS p1 WHERE a1.amopopr = o1.oid AND o1.oprcode = p1.oid AND
a1.amoplefttype != a1.amoprighttype AND
p1.provolatile = 'v';
-- **************** pg_amproc ****************
-- Look for illegal values in pg_amproc fields
SELECT a1.amprocfamily, a1.amprocnum FROM pg_amproc as a1 WHERE a1.amprocfamily = 0OR a1.amproclefttype = 0OR a1.amprocrighttype = 0 OR a1.amprocnum < 0OR a1.amproc = 0;
-- Support routines that are primary members of opfamilies must be immutable -- (else it suggests that the index ordering isn't fixed). But cross-type -- members need only be stable, since they are just shorthands -- for index probe queries.
SELECT a1.amprocfamily, a1.amproc, p1.prosrc FROM pg_amproc AS a1, pg_proc AS p1 WHERE a1.amproc = p1.oid AND
a1.amproclefttype = a1.amprocrighttype AND
p1.provolatile != 'i';
SELECT a1.amprocfamily, a1.amproc, p1.prosrc FROM pg_amproc AS a1, pg_proc AS p1 WHERE a1.amproc = p1.oid AND
a1.amproclefttype != a1.amprocrighttype AND
p1.provolatile = 'v';
-- Almost all of the core distribution's Btree opclasses can use one of the -- two generic "equalimage" functions as their support function 4. Look for -- opclasses that don't allow deduplication unconditionally here. -- -- Newly added Btree opclasses don't have to support deduplication. It will -- usually be trivial to add support, though. Note that the expected output -- of this part of the test will need to be updated when a new opclass cannot -- support deduplication (by using btequalimage). SELECT amp.amproc::regproc AS proc, opf.opfname AS opfamily_name,
opc.opcname AS opclass_name, opc.opcintype::regtype AS opcintype FROM pg_am AS am JOIN pg_opclass AS opc ON opc.opcmethod = am.oid JOIN pg_opfamily AS opf ON opc.opcfamily = opf.oid LEFTJOIN pg_amproc AS amp ON amp.amprocfamily = opf.oid AND
amp.amproclefttype = opc.opcintype AND amp.amprocnum = 4 WHERE am.amname = 'btree'AND
amp.amproc ISDISTINCTFROM'btequalimage'::regproc ORDERBY1, 2, 3;
-- **************** pg_index ****************
-- Look for illegal values in pg_index fields.
SELECT indexrelid, indrelid FROM pg_index WHERE indexrelid = 0OR indrelid = 0OR
indnatts <= 0OR indnatts > 32;
-- oidvector and int2vector fields should be of length indnatts.
-- Check that opclasses and collations match the underlying columns. -- (As written, this test ignores expression indexes.)
SELECT indexrelid::regclass, indrelid::regclass, attname, atttypid::regtype, opcname FROM (SELECT indexrelid, indrelid, unnest(indkey) as ikey,
unnest(indclass) as iclass, unnest(indcollation) as icoll FROM pg_index) ss,
pg_attribute a,
pg_opclass opc WHERE a.attrelid = indrelid AND a.attnum = ikey AND opc.oid = iclass AND
(NOT binary_coercible(atttypid, opcintype) OR icoll != attcollation);
-- For system catalogs, be even tighter: nearly all indexes should be -- exact type matches not binary-coercible matches. At this writing -- the only exception is an OID index on a regproc column.
SELECT indexrelid::regclass, indrelid::regclass, attname, atttypid::regtype, opcname FROM (SELECT indexrelid, indrelid, unnest(indkey) as ikey,
unnest(indclass) as iclass, unnest(indcollation) as icoll FROM pg_index WHERE indrelid < 16384) ss,
pg_attribute a,
pg_opclass opc WHERE a.attrelid = indrelid AND a.attnum = ikey AND opc.oid = iclass AND
(opcintype != atttypid OR icoll != attcollation) ORDERBY1;
-- Check for system catalogs with collation-sensitive ordering. This is not -- a representational error in pg_index, but simply wrong catalog design. -- It's bad because we expect to be able to clone template0 and assign the -- copy a different database collation. It would especially not work for -- shared catalogs.
SELECT relname, attname, attcollation FROM pg_class c, pg_attribute a WHERE c.oid = attrelid AND c.oid < 16384AND
c.relkind != 'v'AND-- we don't care about columns in views
attcollation != 0AND
attcollation != (SELECT oid FROM pg_collation WHERE collname = 'C');
-- Double-check that collation-sensitive indexes have "C" collation, too.
SELECT indexrelid::regclass, indrelid::regclass, iclass, icoll FROM (SELECT indexrelid, indrelid,
unnest(indclass) as iclass, unnest(indcollation) as icoll FROM pg_index WHERE indrelid < 16384) ss WHERE icoll != 0AND
icoll != (SELECT oid FROM pg_collation WHERE collname = 'C');
Messung V0.5 in Prozent
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(vorverarbeitet am 2026-08-08)
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