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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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6
src/backend/parser/parse_agg.c
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@@ -723,6 +723,7 @@ build_aggregate_fnexprs(Oid *agg_input_types,
Oid agg_result_type,
Oid transfn_oid,
Oid finalfn_oid,
Oid collation,
Expr **transfnexpr,
Expr **finalfnexpr)
{
@@ -741,6 +742,7 @@ build_aggregate_fnexprs(Oid *agg_input_types,
argp->paramid = -1;
argp->paramtype = agg_state_type;
argp->paramtypmod = -1;
argp->paramcollation = collation;
argp->location = -1;
args = list_make1(argp);
@@ -752,6 +754,7 @@ build_aggregate_fnexprs(Oid *agg_input_types,
argp->paramid = -1;
argp->paramtype = agg_input_types[i];
argp->paramtypmod = -1;
argp->paramcollation = collation;
argp->location = -1;
args = lappend(args, argp);
}
@@ -759,6 +762,7 @@ build_aggregate_fnexprs(Oid *agg_input_types,
*transfnexpr = (Expr *) makeFuncExpr(transfn_oid,
agg_state_type,
args,
collation,
COERCE_DONTCARE);
/* see if we have a final function */
@@ -776,11 +780,13 @@ build_aggregate_fnexprs(Oid *agg_input_types,
argp->paramid = -1;
argp->paramtype = agg_state_type;
argp->paramtypmod = -1;
argp->paramcollation = collation;
argp->location = -1;
args = list_make1(argp);
*finalfnexpr = (Expr *) makeFuncExpr(finalfn_oid,
agg_result_type,
args,
collation,
COERCE_DONTCARE);
}