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Add ceiling() as an alias for ceil(), and power() as an alias for pow(). 

Regression tests and documentation have both been updated.

SQL2003 requires that both ceiling() and ceil() be present, so I have
documented both spellings. SQL2003 doesn't mention pow() as far as I
can see, so I decided to replace pow() with power() in the documentation:
there is little reason to encourage the continued usage of a function
that isn't compliant with the standard, given a standard-compliant
alternative.

RELEASE NOTES: should state that pow() is considered deprecated
(although I don't see the need to ever remove it.)
This commit is contained in:
Neil Conway 2004-04-23 20:32:20 +00:00
parent 7a66015e98
commit fc7fd50182
10 changed files with 139 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.197 2004/04/10 18:02:59 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.198 2004/04/23 20:32:19 neilc Exp $
PostgreSQL documentation
-->
@ -587,6 +587,14 @@ PostgreSQL documentation
<entry><literal>-42</literal></entry>
</row>
<row>
<entry><literal><function>ceiling</function>(<type>dp</type> or <type>numeric</type>)</literal></entry>
<entry>(same as input)</entry>
<entry>smallest integer not less than argument (alias for <function>ceil</function>)</entry>
<entry><literal>ceiling(-95.3)</literal></entry>
<entry><literal>-95</literal></entry>
</row>
<row>
<entry><literal><function>degrees</function>(<type>dp</type>)</literal></entry>
<entry><type>dp</type></entry>
@ -654,20 +662,20 @@ PostgreSQL documentation
</row>
<row>
<entry><literal><function>pow</function>(<parameter>a</parameter> <type>dp</type>,
<entry><literal><function>power</function>(<parameter>a</parameter> <type>dp</type>,
<parameter>b</parameter> <type>dp</type>)</literal></entry>
<entry><type>dp</type></entry>
<entry><parameter>a</> raised to the power of <parameter>b</parameter></entry>
<entry><literal>pow(9.0, 3.0)</literal></entry>
<entry><literal>power(9.0, 3.0)</literal></entry>
<entry><literal>729</literal></entry>
</row>
<row>
<entry><literal><function>pow</function>(<parameter>a</parameter> <type>numeric</type>,
<entry><literal><function>power</function>(<parameter>a</parameter> <type>numeric</type>,
<parameter>b</parameter> <type>numeric</type>)</literal></entry>
<entry><type>numeric</type></entry>
<entry><parameter>a</> raised to the power of <parameter>b</parameter></entry>
<entry><literal>pow(9.0, 3.0)</literal></entry>
<entry><literal>power(9.0, 3.0)</literal></entry>
<entry><literal>729</literal></entry>
</row>

4
src/include/catalog/catversion.h
View File

@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.223 2004/04/01 21:28:45 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.224 2004/04/23 20:32:19 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200403291
#define CATALOG_VERSION_NO 200404220
#endif

10
src/include/catalog/pg_proc.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.324 2004/04/02 23:14:08 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.325 2004/04/23 20:32:19 neilc Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -471,6 +471,8 @@ DATA(insert OID = 229 ( dtrunc PGNSP PGUID 12 f f t f i 1 701 "701" _null_
DESCR("truncate to integer");
DATA(insert OID = 2308 ( ceil PGNSP PGUID 12 f f t f i 1 701 "701" _null_ dceil - _null_ ));
DESCR("smallest integer >= value");
DATA(insert OID = 2320 ( ceiling PGNSP PGUID 12 f f t f i 1 701 "701" _null_ dceil - _null_ ));
DESCR("smallest integer >= value");
DATA(insert OID = 2309 ( floor PGNSP PGUID 12 f f t f i 1 701 "701" _null_ dfloor - _null_ ));
DESCR("largest integer <= value");
DATA(insert OID = 2310 ( sign PGNSP PGUID 12 f f t f i 1 701 "701" _null_ dsign - _null_ ));
@ -1667,6 +1669,8 @@ DATA(insert OID = 1345 ( cbrt PGNSP PGUID 12 f f t f i 1 701 "701" _null_
DESCR("cube root");
DATA(insert OID = 1346 ( pow PGNSP PGUID 12 f f t f i 2 701 "701 701" _null_ dpow - _null_ ));
DESCR("exponentiation");
DATA(insert OID = 1368 ( power PGNSP PGUID 12 f f t f i 2 701 "701 701" _null_ dpow - _null_ ));
DESCR("exponentiation");
DATA(insert OID = 1347 ( exp PGNSP PGUID 12 f f t f i 1 701 "701" _null_ dexp - _null_ ));
DESCR("exponential");
@ -2440,6 +2444,8 @@ DATA(insert OID = 1710 ( trunc PGNSP PGUID 14 f f t f i 1 1700 "1700" _null_
DESCR("value truncated to 'scale' of zero");
DATA(insert OID = 1711 ( ceil PGNSP PGUID 12 f f t f i 1 1700 "1700" _null_ numeric_ceil - _null_ ));
DESCR("smallest integer >= value");
DATA(insert OID = 2167 ( ceiling PGNSP PGUID 12 f f t f i 1 1700 "1700" _null_ numeric_ceil - _null_ ));
DESCR("smallest integer >= value");
DATA(insert OID = 1712 ( floor PGNSP PGUID 12 f f t f i 1 1700 "1700" _null_ numeric_floor - _null_ ));
DESCR("largest integer <= value");
DATA(insert OID = 1718 ( numeric_eq PGNSP PGUID 12 f f t f i 2 16 "1700 1700" _null_ numeric_eq - _null_ ));
@ -2484,6 +2490,8 @@ DATA(insert OID = 1737 ( numeric_log PGNSP PGUID 12 f f t f i 2 1700 "1700 170
DESCR("logarithm base m of n");
DATA(insert OID = 1738 ( pow PGNSP PGUID 12 f f t f i 2 1700 "1700 1700" _null_ numeric_power - _null_ ));
DESCR("m raised to the power of n");
DATA(insert OID = 2169 ( power PGNSP PGUID 12 f f t f i 2 1700 "1700 1700" _null_ numeric_power - _null_ ));
DESCR("m raised to the power of n");
DATA(insert OID = 1739 ( numeric_power PGNSP PGUID 12 f f t f i 2 1700 "1700 1700" _null_ numeric_power - _null_ ));
DESCR("m raised to the power of n");
DATA(insert OID = 1740 ( numeric PGNSP PGUID 12 f f t f i 1 1700 "23" _null_ int4_numeric - _null_ ));

19
src/test/regress/expected/float8-exp-three-digits-win32.out
View File

@ -225,7 +225,7 @@ SELECT '' AS five, f.f1, f.f1 % AS round_f1
| 1.2345678901234e-200 | 0
(5 rows)
-- ceil
-- ceil / ceiling
select ceil(f1) as ceil_f1 from float8_tbl f;
ceil_f1
----------------------
@ -236,6 +236,16 @@ select ceil(f1) as ceil_f1 from float8_tbl f;
1
(5 rows)
select ceiling(f1) as ceiling_f1 from float8_tbl f;
ceiling_f1
----------------------
0
1005
-34
1.2345678901234e+200
1
(5 rows)
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
floor_f1
@ -281,6 +291,13 @@ SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
| 1.2345678901234e-200 | 1.11111110611109e-100
(3 rows)
-- power
SELECT power(float8 '144', float8 '0.5');
power
-------
12
(1 row)
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f

19
src/test/regress/expected/float8-exp-three-digits.out
View File

@ -224,7 +224,7 @@ SELECT '' AS five, f.f1, f.f1 % AS round_f1
| 1.2345678901234e-200 | 0
(5 rows)
-- ceil
-- ceil / ceiling
select ceil(f1) as ceil_f1 from float8_tbl f;
ceil_f1
----------------------
@ -235,6 +235,16 @@ select ceil(f1) as ceil_f1 from float8_tbl f;
1
(5 rows)
select ceiling(f1) as ceiling_f1 from float8_tbl f;
ceiling_f1
----------------------
0
1005
-34
1.2345678901234e+200
1
(5 rows)
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
floor_f1
@ -280,6 +290,13 @@ SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
| 1.2345678901234e-200 | 1.11111110611109e-100
(3 rows)
-- power
SELECT power(float8 '144', float8 '0.5');
power
-------
12
(1 row)
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f

19
src/test/regress/expected/float8-small-is-zero.out
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@ -233,7 +233,7 @@ SELECT '' AS five, f.f1, f.f1 % AS round_f1
| 1.2345678901234e-200 | 0
(5 rows)
-- ceil
-- ceil / ceiling
select ceil(f1) as ceil_f1 from float8_tbl f;
ceil_f1
----------------------
@ -244,6 +244,16 @@ select ceil(f1) as ceil_f1 from float8_tbl f;
1
(5 rows)
select ceiling(f1) as ceiling_f1 from float8_tbl f;
ceiling_f1
----------------------
0
1005
-34
1.2345678901234e+200
1
(5 rows)
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
floor_f1
@ -289,6 +299,13 @@ SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
| 1.2345678901234e-200 | 1.11111110611109e-100
(3 rows)
-- power
SELECT power(float8 '144', float8 '0.5');
power
-------
12
(1 row)
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f

19
src/test/regress/expected/float8.out
View File

@ -225,7 +225,7 @@ SELECT '' AS five, f.f1, f.f1 % AS round_f1
| 1.2345678901234e-200 | 0
(5 rows)
-- ceil
-- ceil / ceiling
select ceil(f1) as ceil_f1 from float8_tbl f;
ceil_f1
----------------------
@ -236,6 +236,16 @@ select ceil(f1) as ceil_f1 from float8_tbl f;
1
(5 rows)
select ceiling(f1) as ceiling_f1 from float8_tbl f;
ceiling_f1
----------------------
0
1005
-34
1.2345678901234e+200
1
(5 rows)
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
floor_f1
@ -281,6 +291,13 @@ SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
| 1.2345678901234e-200 | 1.11111110611109e-100
(3 rows)
-- power
SELECT power(float8 '144', float8 '0.5');
power
-------
12
(1 row)
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f

26
src/test/regress/expected/numeric.out
View File

@ -646,10 +646,10 @@ SELECT t1.id1, t1.result, t2.expected
(0 rows)
-- ******************************
-- * POW(10, LN(value)) check
-- * POWER(10, LN(value)) check
-- ******************************
DELETE FROM num_result;
INSERT INTO num_result SELECT id, 0, POW(numeric '10', LN(ABS(round(val,200))))
INSERT INTO num_result SELECT id, 0, POWER(numeric '10', LN(ABS(round(val,200))))
FROM num_data
WHERE val != '0.0';
SELECT t1.id1, t1.result, t2.expected
@ -708,6 +708,28 @@ SELECT * FROM fract_only;
(6 rows)
DROP TABLE fract_only;
-- Simple check that ceil(), floor(), and round() work correctly
CREATE TABLE ceil_floor_round (a numeric);
INSERT INTO ceil_floor_round VALUES ('-5.5');
INSERT INTO ceil_floor_round VALUES ('-5.499999');
INSERT INTO ceil_floor_round VALUES ('9.5');
INSERT INTO ceil_floor_round VALUES ('9.4999999');
INSERT INTO ceil_floor_round VALUES ('0.0');
INSERT INTO ceil_floor_round VALUES ('0.0000001');
INSERT INTO ceil_floor_round VALUES ('-0.000001');
SELECT a, ceil(a), ceiling(a), floor(a), round(a) FROM ceil_floor_round;
a | ceil | ceiling | floor | round
-----------+------+---------+-------+-------
-5.5 | -5 | -5 | -6 | -6
-5.499999 | -5 | -5 | -6 | -5
9.5 | 10 | 10 | 9 | 10
9.4999999 | 10 | 10 | 9 | 9
0.0 | 0 | 0 | 0 | 0
0.0000001 | 1 | 1 | 0 | 0
-0.000001 | 0 | 0 | -1 | 0
(7 rows)
DROP TABLE ceil_floor_round;
-- TO_CHAR()
--
SELECT '' AS to_char_1, to_char(val, '9G999G999G999G999G999')

6
src/test/regress/sql/float8.sql
View File

@ -85,8 +85,9 @@ SELECT '' AS five, f.f1, %f.f1 AS trunc_f1
SELECT '' AS five, f.f1, f.f1 % AS round_f1
FROM FLOAT8_TBL f;
-- ceil
-- ceil / ceiling
select ceil(f1) as ceil_f1 from float8_tbl f;
select ceiling(f1) as ceiling_f1 from float8_tbl f;
-- floor
select floor(f1) as floor_f1 from float8_tbl f;
@ -103,6 +104,9 @@ SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
FROM FLOAT8_TBL f
WHERE f.f1 > '0.0';
-- power
SELECT power(float8 '144', float8 '0.5');
-- take exp of ln(f.f1)
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
FROM FLOAT8_TBL f

16
src/test/regress/sql/numeric.sql
View File

@ -623,10 +623,10 @@ SELECT t1.id1, t1.result, t2.expected
AND t1.result != t2.expected;
-- ******************************
-- * POW(10, LN(value)) check
-- * POWER(10, LN(value)) check
-- ******************************
DELETE FROM num_result;
INSERT INTO num_result SELECT id, 0, POW(numeric '10', LN(ABS(round(val,200))))
INSERT INTO num_result SELECT id, 0, POWER(numeric '10', LN(ABS(round(val,200))))
FROM num_data
WHERE val != '0.0';
SELECT t1.id1, t1.result, t2.expected
@ -655,6 +655,18 @@ INSERT INTO fract_only VALUES (8, '0.00017');
SELECT * FROM fract_only;
DROP TABLE fract_only;
-- Simple check that ceil(), floor(), and round() work correctly
CREATE TABLE ceil_floor_round (a numeric);
INSERT INTO ceil_floor_round VALUES ('-5.5');
INSERT INTO ceil_floor_round VALUES ('-5.499999');
INSERT INTO ceil_floor_round VALUES ('9.5');
INSERT INTO ceil_floor_round VALUES ('9.4999999');
INSERT INTO ceil_floor_round VALUES ('0.0');
INSERT INTO ceil_floor_round VALUES ('0.0000001');
INSERT INTO ceil_floor_round VALUES ('-0.000001');
SELECT a, ceil(a), ceiling(a), floor(a), round(a) FROM ceil_floor_round;
DROP TABLE ceil_floor_round;
-- TO_CHAR()
--
SELECT '' AS to_char_1, to_char(val, '9G999G999G999G999G999')