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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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5
src/backend/utils/adt/arrayfuncs.c
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@ -3307,6 +3307,7 @@ array_cmp(FunctionCallInfo fcinfo)
{
ArrayType *array1 = PG_GETARG_ARRAYTYPE_P(0);
ArrayType *array2 = PG_GETARG_ARRAYTYPE_P(1);
Oid collation = PG_GET_COLLATION();
int ndims1 = ARR_NDIM(array1);
int ndims2 = ARR_NDIM(array2);
int *dims1 = ARR_DIMS(array1);
@ -3341,7 +3342,8 @@ array_cmp(FunctionCallInfo fcinfo)
*/
typentry = (TypeCacheEntry *) fcinfo->flinfo->fn_extra;
if (typentry == NULL ||
typentry->type_id != element_type)
typentry->type_id != element_type ||
typentry->cmp_proc_finfo.fn_collation != collation)
{
typentry = lookup_type_cache(element_type,
TYPECACHE_CMP_PROC_FINFO);
@ -3351,6 +3353,7 @@ array_cmp(FunctionCallInfo fcinfo)
errmsg("could not identify a comparison function for type %s",
format_type_be(element_type))));
fcinfo->flinfo->fn_extra = (void *) typentry;
typentry->cmp_proc_finfo.fn_collation = collation;
}
typlen = typentry->typlen;
typbyval = typentry->typbyval;