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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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21
src/backend/utils/adt/varchar.c
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@@ -737,7 +737,8 @@ bpcharlt(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_FREE_IF_COPY(arg1, 0);
PG_FREE_IF_COPY(arg2, 1);
@@ -757,7 +758,8 @@ bpcharle(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_FREE_IF_COPY(arg1, 0);
PG_FREE_IF_COPY(arg2, 1);
@@ -777,7 +779,8 @@ bpchargt(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_FREE_IF_COPY(arg1, 0);
PG_FREE_IF_COPY(arg2, 1);
@@ -797,7 +800,8 @@ bpcharge(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_FREE_IF_COPY(arg1, 0);
PG_FREE_IF_COPY(arg2, 1);
@@ -817,7 +821,8 @@ bpcharcmp(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_FREE_IF_COPY(arg1, 0);
PG_FREE_IF_COPY(arg2, 1);
@@ -837,7 +842,8 @@ bpchar_larger(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_RETURN_BPCHAR_P((cmp >= 0) ? arg1 : arg2);
}
@@ -854,7 +860,8 @@ bpchar_smaller(PG_FUNCTION_ARGS)
len1 = bcTruelen(arg1);
len2 = bcTruelen(arg2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2);
cmp = varstr_cmp(VARDATA_ANY(arg1), len1, VARDATA_ANY(arg2), len2,
PG_GET_COLLATION());
PG_RETURN_BPCHAR_P((cmp <= 0) ? arg1 : arg2);
}