- url="http://www.iodbc.org">http://www.iodbc.org.
- driver for that matter.
*
*
* 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
%type row_descriptor, row_list, in_expr_nodes
%type row_expr
%type case_expr, case_arg, when_clause, case_default
+%type opt_empty_parentheses
%type when_clause_list
%type sub_type
%type OptCreateAs, CreateAsList
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
- | CURRENT_DATE
+ | CURRENT_DATE opt_empty_parentheses
{
/*
* Translate as "date('now'::text)".
$$ = (Node *)makeTypeCast((Node *)s, d);
}
- | CURRENT_TIME
+ | CURRENT_TIME opt_empty_parentheses
{
/*
* Translate as "timetz('now'::text)".
$$ = (Node *)makeTypeCast((Node *)s, d);
}
- | CURRENT_TIMESTAMP
+ | CURRENT_TIMESTAMP opt_empty_parentheses
{
/*
* Translate as "timestamptz('now'::text)".
$$ = (Node *)makeTypeCast((Node *)s, d);
}
- | CURRENT_USER
+ | CURRENT_USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "current_user";
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
- | SESSION_USER
+ | SESSION_USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "session_user";
n->agg_distinct = FALSE;
$$ = (Node *)n;
}
- | USER
+ | USER opt_empty_parentheses
{
FuncCall *n = makeNode(FuncCall);
n->funcname = "current_user";
{ $$ = lappend($1, makeString("*")); }
;
+opt_empty_parentheses: '(' ')' { $$ = TRUE; }
+ | /*EMPTY*/ { $$ = TRUE; }
/*****************************************************************************
*
--- PostgreSQL catalog extensions for ODBC compliance
--- $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/odbc.sql,v 1.1 2000/09/18 20:11:37 petere Exp $
+-- PostgreSQL catalog extensions for ODBC compatibility
+-- $Header: /cvsroot/pgsql/src/interfaces/odbc/Attic/odbc.sql,v 1.2 2001/10/09 22:32:33 petere Exp $
+-- ODBC functions are described here:
+--
--- In the current driver, ODBC functions must map directly into a
--- Postgres function. So in some cases we must create a compatible
--- function.
+-- Note: If we format this file consistently we can automatically
+-- generate a corresponding "drop script". Start "CREATE" in the first
+-- column, and keep everything up to and including the argument list on
+-- the same line. See also the makefile rule.
--- truncate on the left
-CREATE FUNCTION ltrunc(text, integer)
- RETURNS text
- AS 'SELECT substring($1 FROM 1 FOR $2)'
- LANGUAGE 'SQL';
+-- String Functions
+-- ++++++++++++++++
+--
+-- Built-in: ASCII, BIT_LENGTH, CHAR_LENGTH, CHARACTER_LENGTH, LTRIM,
+-- OCTET_LENGTH, POSITION, REPEAT, RTRIM, SUBSTRING
+-- Missing: DIFFERENCE, REPLACE, SOUNDEX, LENGTH (ODBC sense)
+-- Keyword problems: CHAR, LEFT, RIGHT
--- truncate on the right
-CREATE FUNCTION rtrunc(text, integer)
- RETURNS text
- AS 'SELECT substring($1 FROM (char_length($1)-($2)+1) FOR $2)'
- LANGUAGE 'SQL';
-CREATE FUNCTION space(integer)
- RETURNS text
- AS 'SELECT lpad('''', $1, '' '')'
- LANGUAGE 'SQL';
+-- CHAR(code)
+CREATE OR REPLACE FUNCTION "char"(integer) RETURNS text AS '
+ SELECT chr($1);
+' LANGUAGE SQL;
---
--- Mathematical functions
---
-CREATE FUNCTION truncate(numeric,integer)
- RETURNS numeric
- AS 'SELECT trunc($1, $2)'
- LANGUAGE 'SQL';
+-- CONCAT(string1, string2)
+CREATE OR REPLACE FUNCTION concat(text, text) RETURNS text AS '
+ SELECT $1 || $2;
+' LANGUAGE SQL;
+
+
+-- INSERT(string1, start, len, string2)
+CREATE OR REPLACE FUNCTION insert(text, integer, integer, text) RETURNS text AS '
+ SELECT substring($1 from 1 for $2) || $4 || substring($1 from $2 + $3 + 1);
+' LANGUAGE SQL;
+
+
+-- LCASE(string)
+CREATE OR REPLACE FUNCTION lcase(text) RETURNS text AS '
+ SELECT lower($1);
+' LANGUAGE SQL;
+
+
+-- LEFT(string, count)
+CREATE OR REPLACE FUNCTION "left"(text, integer) RETURNS text AS '
+ SELECT substring($1 for $2);
+' LANGUAGE SQL;
+
+
+-- LOCATE(substring, string[, start])
+CREATE OR REPLACE FUNCTION locate(text, text) RETURNS integer AS '
+ SELECT position($1 in $2);
+' LANGUAGE SQL;
+CREATE OR REPLACE FUNCTION locate(text, text, integer) RETURNS integer AS '
+ SELECT position($1 in substring($2 from $3)) + $3 - 1;
+' LANGUAGE SQL;
+
+-- RIGHT(string, count)
+CREATE OR REPLACE FUNCTION "right"(text, integer) RETURNS text AS '
+ SELECT substring($1 from char_length($1) - $2 + 1);
+' LANGUAGE SQL;
+
+
+-- SPACE(count)
+CREATE OR REPLACE FUNCTION space(integer) RETURNS text AS '
+ SELECT repeat('' '', $1);
+' LANGUAGE SQL;
+
+
+-- UCASE(string)
+CREATE OR REPLACE FUNCTION ucase(text) RETURNS text AS '
+ SELECT upper($1);
+' LANGUAGE SQL;
+
+
+-- Numeric Functions
+-- +++++++++++++++++
--
--- Date/time functions for v7.0
+-- Built-in: ABS, ACOS, ASIN, ATAN, ATAN2, COS, COT, DEGRESS, EXP,
+-- FLOOR, MOD, PI, RADIANS, ROUND, SIGN, SIN, SQRT, TAN
+-- Missing: LOG (ODBC sense)
+
+
+-- CEILING(num)
+CREATE OR REPLACE FUNCTION ceiling(numeric) RETURNS numeric AS '
+ SELECT ceil($1);
+' LANGUAGE SQL;
+
+
+-- LOG10(num)
+CREATE OR REPLACE FUNCTION log10(double precision) RETURNS double precision AS '
+ SELECT log($1);
+' LANGUAGE SQL;
+CREATE OR REPLACE FUNCTION log10(numeric) RETURNS numeric AS '
+ SELECT log($1);
+' LANGUAGE SQL;
+
+
+-- POWER(num, num)
+CREATE OR REPLACE FUNCTION power(double precision, double precision)
+ RETURNS double precision AS '
+ SELECT pow($1, $2);
+' LANGUAGE SQL;
+CREATE OR REPLACE FUNCTION power(numeric, numeric)
+ RETURNS numeric AS '
+ SELECT pow($1, $2);
+' LANGUAGE SQL;
+
+
+-- RAND([seed])
+CREATE OR REPLACE FUNCTION rand() RETURNS double precision AS '
+ SELECT random();
+' LANGUAGE SQL;
+CREATE OR REPLACE FUNCTION rand(double precision) RETURNS double precision AS '
+ SELECT setseed($1);
+ SELECT random();
+' LANGUAGE SQL;
+
+
+-- TRUNCATE(num, places)
+CREATE OR REPLACE FUNCTION truncate(numeric, integer) RETURNS numeric AS '
+ SELECT trunc($1, $2);
+' LANGUAGE SQL;
+
+
+-- Time, Date, and Interval Functions
+-- ++++++++++++++++++++++++++++++++++
--
+-- Built-in: CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, EXTRACT, NOW
+-- Missing: none
+
+
+CREATE OR REPLACE FUNCTION curdate() RETURNS date AS '
+ SELECT current_date;
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION curtime() RETURNS time with time zone AS '
+ SELECT current_time;
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION dayname(timestamp) RETURNS text AS '
+ SELECT to_char($1,''Day'');
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION dayofmonth(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(day FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION dayofweek(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(dow FROM $1) AS integer) + 1;
+' LANGUAGE SQL;
-CREATE FUNCTION curdate()
- RETURNS date
- AS 'SELECT CAST(''now'' AS date)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION curtime()
- RETURNS time
- AS 'SELECT CAST(''now'' AS time)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION dayname(timestamp)
- RETURNS text
- AS 'SELECT to_char($1,''Day'')'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION dayofmonth(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''day'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION dayofweek(timestamp)
- RETURNS integer
- AS 'SELECT ( CAST(date_part(''dow'', $1) AS integer) + 1)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION dayofyear(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''doy'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION hour(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''hour'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION minute(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''minute'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION odbc_month(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''month'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION monthname(timestamp)
- RETURNS text
- AS 'SELECT to_char($1, ''Month'')'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION quarter(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''quarter'', $1) AS integer)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION second(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''second'', $1) AS integer)'
- LANGUAGE 'SQL';
+CREATE OR REPLACE FUNCTION dayofyear(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(doy FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION hour(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(hour FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION minute(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(minute FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION month(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(month FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION monthname(timestamp) RETURNS text AS '
+ SELECT to_char($1, ''Month'');
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION quarter(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(quarter FROM $1) AS integer);
+' LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION second(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(second FROM $1) AS integer);
+' LANGUAGE SQL;
/*
-- The first argument is an integer constant denoting the units
-- of the second argument. Until we know the actual values, we
-- cannot implement these. - thomas 2000-04-11
-CREATE FUNCTION timestampadd(integer,integer,timestamp)
- RETURNS timestamp
- AS 'SELECT CAST(($3 + ($2 * $1)) AS timestamp)'
- LANGUAGE 'SQL';
-
-CREATE FUNCTION timestampdiff(integer,integer,timestamp)
- RETURNS timestamp
- AS 'SELECT CAST(($3 + ($2 * $1)) AS timestamp)'
- LANGUAGE 'SQL';
+xCREATE OR REPLACE FUNCTION timestampadd(integer, integer, timestamp)
+ RETURNS timestamp AS '
+ SELECT CAST(($3 + ($2 * $1)) AS timestamp);
+' LANGUAGE SQL;
+
+xCREATE OR REPLACE FUNCTION timestampdiff(integer, integer, timestamp)
+ RETURNS timestamp AS '
+ SELECT CAST(($3 + ($2 * $1)) AS timestamp);
+' LANGUAGE SQL;
*/
-CREATE FUNCTION week(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''week'', $1) AS integer)'
- LANGUAGE 'SQL';
+CREATE OR REPLACE FUNCTION week(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(week FROM $1) AS integer);
+' LANGUAGE SQL;
-CREATE FUNCTION year(timestamp)
- RETURNS integer
- AS 'SELECT CAST(date_part(''year'', $1) AS integer)'
- LANGUAGE 'SQL';
+CREATE OR REPLACE FUNCTION year(timestamp) RETURNS integer AS '
+ SELECT CAST(EXTRACT(year FROM $1) AS integer);
+' LANGUAGE SQL;
---
--- System functions.
---
-
-/*
-CREATE FUNCTION database()
- RETURNS text
- AS 'SELECT ...'
- LANGUAGE 'SQL';
-*/
-CREATE FUNCTION odbc_user()
- RETURNS text
- AS 'SELECT CAST(USER AS text)'
- LANGUAGE 'SQL';
+-- System Functions
+-- ++++++++++++++++
+--
+-- Built-in: USER
+-- Missing: DATABASE, IFNULL
projects / postgresql.git / commitdiff