| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Postgres/src/bin/psql/ (Postgres Database Version 18.4©) Datei vom 11.4.2026 mit Größe 952 B |
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Quelle crosstabview.hSprache: C |
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/* * psql - the PostgreSQL interactive terminal * * Copyright (c) 2000-2025, PostgreSQL Global Development Group * * src/bin/psql/crosstabview.h */ #ifndef CROSSTABVIEW_H #define CROSSTABVIEW_H #include "libpq-fe.h" /* * Limit the number of output columns generated in memory by the crosstabview * algorithm. A new output column is added for each distinct value found in the * column that pivots (to form the horizontal header). * The purpose of this limit is to fail early instead of over-allocating or spending * too much time if the crosstab to generate happens to be unreasonably large * (worst case: a NxN cartesian product with N=number of tuples). * The value of 1600 corresponds to the maximum columns per table in storage, * but it could be as much as INT_MAX theoretically. */ #define CROSSTABVIEW_MAX_COLUMNS 1600 /* prototypes */ extern bool PrintResultInCrosstab(const PGresult *res); #endif /* CROSSTABVIEW_H */
¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet am 2026-08-08) ¤*© Formatika GbR, Deutschland |
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2026-08-25