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Per-column collation support

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This adds collation support for columns and domains, a COLLATE clause
to override it per expression, and B-tree index support.

Peter Eisentraut
reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch
This commit is contained in:
Peter Eisentraut
2011-02-08 23:04:18 +02:00
parent 1703f0e8da
commit 414c5a2ea6
156 changed files with 4519 additions and 582 deletions
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23
src/include/utils/pg_locale.h
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@@ -13,6 +13,9 @@
#define _PG_LOCALE_
#include <locale.h>
#ifdef LOCALE_T_IN_XLOCALE
#include <xlocale.h>
#endif
#include "utils/guc.h"
@@ -42,8 +45,8 @@ extern const char *locale_time_assign(const char *value,
extern bool check_locale(int category, const char *locale);
extern char *pg_perm_setlocale(int category, const char *locale);
extern bool lc_collate_is_c(void);
extern bool lc_ctype_is_c(void);
extern bool lc_collate_is_c(Oid collation);
extern bool lc_ctype_is_c(Oid collation);
/*
* Return the POSIX lconv struct (contains number/money formatting
@@ -53,4 +56,20 @@ extern struct lconv *PGLC_localeconv(void);
extern void cache_locale_time(void);
/*
* We define our own wrapper around locale_t so we can keep the same
* function signatures for all builds, while not having to create a
* fake version of the standard type locale_t in the global namespace.
* The fake version of pg_locale_t can be checked for truth; that's
* about all it will be needed for.
*/
#ifdef HAVE_LOCALE_T
typedef locale_t pg_locale_t;
#else
typedef int pg_locale_t;
#endif
extern pg_locale_t pg_newlocale_from_collation(Oid collid);
#endif /* _PG_LOCALE_ */