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Create a new GUC variable search_path to control the namespace search

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path.  The default behavior if no per-user schemas are created is that
all users share a 'public' namespace, thus providing behavior backwards
compatible with 7.2 and earlier releases.  Probably the semantics and
default setting will need to be fine-tuned, but this is a start.
This commit is contained in:
Tom Lane
2002-04-01 03:34:27 +00:00
parent 6df395f63a
commit 838fe25a95
13 changed files with 454 additions and 79 deletions
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38
src/backend/parser/gram.y
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@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.297 2002/03/29 19:06:10 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.298 2002/04/01 03:34:25 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -94,6 +94,7 @@ static void insertSelectOptions(SelectStmt *stmt,
static Node *makeSetOp(SetOperation op, bool all, Node *larg, Node *rarg);
static Node *doNegate(Node *n);
static void doNegateFloat(Value *v);
static bool set_name_needs_quotes(const char *name);
#define MASK(b) (1 << (b))
@@ -909,19 +910,26 @@ var_value: opt_boolean { $$ = $1; }
if ($1 == NIL)
elog(ERROR, "SET must have at least one argument");
/* compute space needed; allow for quotes and comma */
foreach (n, $1)
{
Value *p = (Value *) lfirst(n);
Assert(IsA(p, String));
/* keep track of room for string and trailing comma */
slen += (strlen(p->val.str) + 1);
slen += (strlen(p->val.str) + 3);
}
result = palloc(slen + 1);
*result = '\0';
foreach (n, $1)
{
Value *p = (Value *) lfirst(n);
strcat(result, p->val.str);
if (set_name_needs_quotes(p->val.str))
{
strcat(result, "\"");
strcat(result, p->val.str);
strcat(result, "\"");
}
else
strcat(result, p->val.str);
strcat(result, ",");
}
/* remove the trailing comma from the last element */
@@ -6568,3 +6576,25 @@ doNegateFloat(Value *v)
v->val.str = newval;
}
}
/*
* Decide whether to put double quotes around a name appearing in a SET
* name_list. Presently, do so if the name contains whitespace, commas,
* or uppercase characters. (This is correct assuming that the result
* will be deparsed by SplitIdentifierString or similar logic.)
*/
static bool
set_name_needs_quotes(const char *name)
{
if (*name == '\0')
return true; /* empty name does need quotes */
while (*name)
{
if (*name == ',' ||
isspace((unsigned char) *name) ||
isupper((unsigned char) *name))
return true;
name++;
}
return false;
}