database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-10 17:42:29 +03:00
Code Activity

Support assignment to subfields of composite columns in UPDATE and INSERT.

Browse Source 
As a side effect, cause subscripts in INSERT targetlists to do something
more or less sensible; previously we evaluated such subscripts and then
effectively ignored them.  Another side effect is that UPDATE-ing an
element or slice of an array value that is NULL now produces a non-null
result, namely an array containing just the assigned-to positions.
This commit is contained in:
Tom Lane
2004-06-09 19:08:20 +00:00
parent 3a0df651da
commit 7e64dbc6b5
27 changed files with 1468 additions and 574 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/backend/nodes/equalfuncs.c
View File

@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.223 2004/05/30 23:40:27 neilc Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.224 2004/06/09 19:08:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -350,6 +350,17 @@ _equalFieldSelect(FieldSelect *a, FieldSelect *b)
return true;
}
static bool
_equalFieldStore(FieldStore *a, FieldStore *b)
{
COMPARE_NODE_FIELD(arg);
COMPARE_NODE_FIELD(newvals);
COMPARE_NODE_FIELD(fieldnums);
COMPARE_SCALAR_FIELD(resulttype);
return true;
}
static bool
_equalRelabelType(RelabelType *a, RelabelType *b)
{
@@ -1428,7 +1439,6 @@ static bool
_equalColumnRef(ColumnRef *a, ColumnRef *b)
{
COMPARE_NODE_FIELD(fields);
COMPARE_NODE_FIELD(indirection);
return true;
}
@@ -1437,8 +1447,6 @@ static bool
_equalParamRef(ParamRef *a, ParamRef *b)
{
COMPARE_SCALAR_FIELD(number);
COMPARE_NODE_FIELD(fields);
COMPARE_NODE_FIELD(indirection);
return true;
}
@@ -1474,10 +1482,9 @@ _equalAIndices(A_Indices *a, A_Indices *b)
}
static bool
_equalExprFieldSelect(ExprFieldSelect *a, ExprFieldSelect *b)
_equalA_Indirection(A_Indirection *a, A_Indirection *b)
{
COMPARE_NODE_FIELD(arg);
COMPARE_NODE_FIELD(fields);
COMPARE_NODE_FIELD(indirection);
return true;
@@ -1805,6 +1812,9 @@ equal(void *a, void *b)
case T_FieldSelect:
retval = _equalFieldSelect(a, b);
break;
case T_FieldStore:
retval = _equalFieldStore(a, b);
break;
case T_RelabelType:
retval = _equalRelabelType(a, b);
break;
@@ -2127,8 +2137,8 @@ equal(void *a, void *b)
case T_A_Indices:
retval = _equalAIndices(a, b);
break;
case T_ExprFieldSelect:
retval = _equalExprFieldSelect(a, b);
case T_A_Indirection:
retval = _equalA_Indirection(a, b);
break;
case T_ResTarget:
retval = _equalResTarget(a, b);