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Allow optional () after current_user, session_user, user, current_time,

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current_timestamp, current_date for ODBC compatibility.

Add more functions to odbc.sql catalog extension, use new CREATE OR
REPLACE FUNCTION.

Document iODBC/unixODBC build options.
This commit is contained in:
Peter Eisentraut
2001-10-09 22:32:33 +00:00
parent 839b9bc011
commit ec5c62874d
5 changed files with 292 additions and 166 deletions
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17
src/backend/parser/gram.y
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@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.260 2001/10/08 18:16:59 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.261 2001/10/09 22:32:32 petere Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -237,6 +237,7 @@ static void doNegateFloat(Value *v);
%type <list> row_descriptor, row_list, in_expr_nodes
%type <node> row_expr
%type <node> case_expr, case_arg, when_clause, case_default
%type <boolean> opt_empty_parentheses
%type <list> when_clause_list
%type <ival> sub_type
%type <list> OptCreateAs, CreateAsList
@@ -4894,7 +4895,7 @@ c_expr: attr
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
| CURRENT_DATE
| CURRENT_DATE opt_empty_parentheses
{
/*
* Translate as "date('now'::text)".
@@ -4927,7 +4928,7 @@ c_expr: attr
$$ = (Node *)makeTypeCast((Node *)s, d);
}
| CURRENT_TIME
| CURRENT_TIME opt_empty_parentheses
{
/*
* Translate as "timetz('now'::text)".
@@ -4978,7 +4979,7 @@ c_expr: attr
$$ = (Node *)makeTypeCast((Node *)s, d);
}
| CURRENT_TIMESTAMP
| CURRENT_TIMESTAMP opt_empty_parentheses
{
/*
* Translate as "timestamptz('now'::text)".
@@ -5032,7 +5033,7 @@ c_expr: attr
$$ = (Node *)makeTypeCast((Node *)s, d);
}
| CURRENT_USER
| CURRENT_USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "current_user";
@@ -5041,7 +5042,7 @@ c_expr: attr
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
| SESSION_USER
| SESSION_USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "session_user";
@@ -5050,7 +5051,7 @@ c_expr: attr
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
| USER
| USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "current_user";
@@ -5386,6 +5387,8 @@ attrs: attr_name
{ $$ = lappend($1, makeString("*")); }
;
opt_empty_parentheses: '(' ')' { $$ = TRUE; }
| /*EMPTY*/ { $$ = TRUE; }
/*****************************************************************************
*