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to_char(float4/8): zero pad to specified length

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Previously, zero padding was limited to the internal length, rather than
the specified length.  This allows it to match to_char(int/numeric), which
always padded to the specified length.

Regression tests added.

BACKWARD INCOMPATIBILITY
This commit is contained in:
Bruce Momjian
2015-03-21 21:43:15 -04:00
parent 1933a5bbc8
commit cc0d90b73b
4 changed files with 162 additions and 39 deletions
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70
src/test/regress/expected/numeric.out
View File

@ -1499,3 +1499,73 @@ select * from generate_series(1::numeric, 3::numeric) i, generate_series(1,5,i)
3 | 4
(10 rows)
--
-- Test code path for high-precision output
--
SELECT to_char(float8 '99999999999', '9999999999999999D99999999');
to_char
----------------------------
99999999999.00000000
(1 row)
SELECT to_char(float8 '99999999999', '9999999999999999D' || repeat('9', 1000));
to_char
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
99999999999.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
(1 row)
SELECT to_char(float8 '1e9','999999999999999999999D9');
to_char
--------------------------
1000000000.0
(1 row)
SELECT to_char(float8 '1e20','999999999999999999999D9');
to_char
--------------------------
100000000000000000000.0
(1 row)
SELECT to_char(1e20, '999999999999999999999D9');
to_char
--------------------------
100000000000000000000.0
(1 row)
SELECT to_char(float8 '1.123456789123456789', '9.' || repeat('9', 55));
to_char
------------------------------------------------------------
1.1234567891234500000000000000000000000000000000000000000
(1 row)
SELECT to_char(float8 '1999999999999999999999999999999999999999999999.123456789123456789',
repeat('9', 50) || '.' || repeat('9', 50));
to_char
--------------------------------------------------------------------------------------------------------
1999999999999990000000000000000000000000000000.00000000000000000000000000000000000000000000000000
(1 row)
SELECT to_char(float8 '0.1', '9D' || repeat('9', 1000));
to_char
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
.1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
(1 row)
SELECT to_char(int4 '1', '9D' || repeat('9', 1000) || 'EEEE');
to_char
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e+00
(1 row)
SELECT to_char(float4 '1', '9D' || repeat('9', 1000) || 'EEEE');
to_char
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e+00
(1 row)
SELECT to_char(float8 '1', '9D' || repeat('9', 1000) || 'EEEE');
to_char
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e+00
(1 row)

2
src/test/regress/expected/window.out
View File

@ -1806,7 +1806,7 @@ SELECT to_char(SUM(n::float8) OVER (ORDER BY i ROWS BETWEEN CURRENT ROW AND 1 FO
FROM (VALUES(1,1e20),(2,1)) n(i,n);
to_char
--------------------------
100000000000000000000
100000000000000000000.0
1.0
(2 rows)

17
src/test/regress/sql/numeric.sql
View File

@ -858,3 +858,20 @@ select (i / (10::numeric ^ 131071))::numeric(1,0)
select * from generate_series(1::numeric, 3::numeric) i, generate_series(i,3) j;
select * from generate_series(1::numeric, 3::numeric) i, generate_series(1,i) j;
select * from generate_series(1::numeric, 3::numeric) i, generate_series(1,5,i) j;
--
-- Test code path for high-precision output
--
SELECT to_char(float8 '99999999999', '9999999999999999D99999999');
SELECT to_char(float8 '99999999999', '9999999999999999D' || repeat('9', 1000));
SELECT to_char(float8 '1e9','999999999999999999999D9');
SELECT to_char(float8 '1e20','999999999999999999999D9');
SELECT to_char(1e20, '999999999999999999999D9');
SELECT to_char(float8 '1.123456789123456789', '9.' || repeat('9', 55));
SELECT to_char(float8 '1999999999999999999999999999999999999999999999.123456789123456789',
repeat('9', 50) || '.' || repeat('9', 50));
SELECT to_char(float8 '0.1', '9D' || repeat('9', 1000));
SELECT to_char(int4 '1', '9D' || repeat('9', 1000) || 'EEEE');
SELECT to_char(float4 '1', '9D' || repeat('9', 1000) || 'EEEE');
SELECT to_char(float8 '1', '9D' || repeat('9', 1000) || 'EEEE');