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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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8
src/backend/parser/parse_node.c
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@ -189,10 +189,11 @@ make_var(ParseState *pstate, RangeTblEntry *rte, int attrno, int location)
sublevels_up;
Oid vartypeid;
int32 type_mod;
Oid varcollid;
vnum = RTERangeTablePosn(pstate, rte, &sublevels_up);
get_rte_attribute_type(rte, attrno, &vartypeid, &type_mod);
result = makeVar(vnum, attrno, vartypeid, type_mod, sublevels_up);
get_rte_attribute_type(rte, attrno, &vartypeid, &type_mod, &varcollid);
result = makeVar(vnum, attrno, vartypeid, type_mod, varcollid, sublevels_up);
result->location = location;
return result;
}
@ -269,6 +270,7 @@ transformArrayType(Oid *arrayType, int32 *arrayTypmod)
* elementType OID of array's element type (fetch with transformArrayType,
* or pass InvalidOid to do it here)
* arrayTypMod typmod for the array (which is also typmod for the elements)
* arrayColl OID of collation of array and array's elements
* indirection Untransformed list of subscripts (must not be NIL)
* assignFrom NULL for array fetch, else transformed expression for source.
*/
@ -278,6 +280,7 @@ transformArraySubscripts(ParseState *pstate,
Oid arrayType,
Oid elementType,
int32 arrayTypMod,
Oid arrayColl,
List *indirection,
Node *assignFrom)
{
@ -404,6 +407,7 @@ transformArraySubscripts(ParseState *pstate,
aref->refarraytype = arrayType;
aref->refelemtype = elementType;
aref->reftypmod = arrayTypMod;
aref->refcollid = arrayColl;
aref->refupperindexpr = upperIndexpr;
aref->reflowerindexpr = lowerIndexpr;
aref->refexpr = (Expr *) arrayBase;