database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

First phase of work on array improvements. ARRAY[x,y,z] constructor

Browse Source 
expressions, ARRAY(sub-SELECT) expressions, some array functions.
Polymorphic functions using ANYARRAY/ANYELEMENT argument and return
types.  Some regression tests in place, documentation is lacking.
Joe Conway, with some kibitzing from Tom Lane.
This commit is contained in:
Tom Lane
2003-04-08 23:20:04 +00:00
parent 6fb5115850
commit 730840c9b6
47 changed files with 2597 additions and 479 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/backend/utils/adt/ruleutils.c
View File

@ -3,7 +3,7 @@
* back to source text
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.137 2003/03/20 18:58:02 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.138 2003/04/08 23:20:02 tgl Exp $
*
* This software is copyrighted by Jan Wieck - Hamburg.
*
@ -2217,6 +2217,7 @@ get_rule_expr(Node *node, deparse_context *context,
{
ArrayRef *aref = (ArrayRef *) node;
bool savevarprefix = context->varprefix;
bool need_parens;
List *lowlist;
List *uplist;
@ -2229,7 +2230,16 @@ get_rule_expr(Node *node, deparse_context *context,
*/
if (aref->refassgnexpr)
context->varprefix = false;
/*
* Parenthesize the argument unless it's a simple Var.
*/
need_parens = (aref->refassgnexpr == NULL) &&
!IsA(aref->refexpr, Var);
if (need_parens)
appendStringInfoChar(buf, '(');
get_rule_expr((Node *) aref->refexpr, context, showimplicit);
if (need_parens)
appendStringInfoChar(buf, ')');
context->varprefix = savevarprefix;
lowlist = aref->reflowerindexpr;
foreach(uplist, aref->refupperindexpr)
@ -2421,6 +2431,26 @@ get_rule_expr(Node *node, deparse_context *context,
}
break;
case T_ArrayExpr:
{
ArrayExpr *arrayexpr = (ArrayExpr *) node;
List *element;
char *sep;
appendStringInfo(buf, "ARRAY[");
sep = "";
foreach(element, arrayexpr->elements)
{
Node *e = (Node *) lfirst(element);
appendStringInfo(buf, sep);
get_rule_expr(e, context, true);
sep = ", ";
}
appendStringInfo(buf, "]");
}
break;
case T_CoalesceExpr:
{
CoalesceExpr *coalesceexpr = (CoalesceExpr *) node;
@ -2906,7 +2936,10 @@ get_sublink_expr(SubLink *sublink, deparse_context *context)
char *sep;
bool need_paren;
appendStringInfoChar(buf, '(');
if (sublink->subLinkType == ARRAY_SUBLINK)
appendStringInfo(buf, "ARRAY(");
else
appendStringInfoChar(buf, '(');
if (sublink->lefthand != NIL)
{
@ -2967,6 +3000,7 @@ get_sublink_expr(SubLink *sublink, deparse_context *context)
break;
case EXPR_SUBLINK:
case ARRAY_SUBLINK:
need_paren = false;
break;