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fix the issue that decimal divide not round. (pingcap#6471)
close pingcap#4488, close pingcap#6393, close pingcap#6462
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| # Copyright 2023 PingCAP, Ltd. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| # decimal / decimal | ||
| mysql> drop table if exists test.t; | ||
| mysql> create table test.t(a decimal(4,0), b decimal(40, 20)); | ||
| mysql> alter table test.t set tiflash replica 1 | ||
| mysql> insert into test.t values (1, 10000), (1, 10001), (1, 20000), (1, 20001); | ||
| func> wait_table test t | ||
| mysql> set tidb_enforce_mpp=1; select a, b, a/b from test.t order by b; | ||
| +------+----------------------------+--------+ | ||
| | a | b | a/b | | ||
| +------+----------------------------+--------+ | ||
| | 1 | 10000.00000000000000000000 | 0.0001 | | ||
| | 1 | 10001.00000000000000000000 | 0.0001 | | ||
| | 1 | 20000.00000000000000000000 | 0.0001 | | ||
| | 1 | 20001.00000000000000000000 | 0.0000 | | ||
| +------+----------------------------+--------+ | ||
|
|
||
| # int / decimal | ||
| mysql> drop table if exists test.t; | ||
| mysql> create table test.t(a int, b decimal(40, 20)); | ||
| mysql> alter table test.t set tiflash replica 1 | ||
| mysql> insert into test.t values (1, 10000), (1, 10001), (1, 20000), (1, 20001); | ||
| func> wait_table test t | ||
| mysql> set tidb_enforce_mpp=1; select a, b, a/b from test.t order by b; | ||
| +------+----------------------------+--------+ | ||
| | a | b | a/b | | ||
| +------+----------------------------+--------+ | ||
| | 1 | 10000.00000000000000000000 | 0.0001 | | ||
| | 1 | 10001.00000000000000000000 | 0.0001 | | ||
| | 1 | 20000.00000000000000000000 | 0.0001 | | ||
| | 1 | 20001.00000000000000000000 | 0.0000 | | ||
| +------+----------------------------+--------+ | ||
|
|
||
| # decimal / int | ||
| mysql> drop table if exists test.t; | ||
| mysql> create table test.t(a int, b decimal(40, 20)); | ||
| mysql> alter table test.t set tiflash replica 1 | ||
| mysql> insert into test.t values (1, 10000), (1, 10001), (1, 20000), (1, 20001); | ||
| func> wait_table test t | ||
| mysql> set tidb_enforce_mpp=1; select a, b, a/b from test.t order by b; | ||
| +------+----------------------------+--------+ | ||
| | a | b | a/b | | ||
| +------+----------------------------+--------+ | ||
| | 1 | 10000.00000000000000000000 | 0.0001 | | ||
| | 1 | 10001.00000000000000000000 | 0.0001 | | ||
| | 1 | 20000.00000000000000000000 | 0.0001 | | ||
| | 1 | 20001.00000000000000000000 | 0.0000 | | ||
| +------+----------------------------+--------+ | ||
|
|
||
| # int / int | ||
| mysql> drop table if exists test.t; | ||
| mysql> create table test.t(a int, b int); | ||
| mysql> alter table test.t set tiflash replica 1 | ||
| mysql> insert into test.t values (1, 10000), (1, 10001), (1, 20000), (1, 20001); | ||
| func> wait_table test t | ||
| mysql> set tidb_enforce_mpp=1; select a, b, a/b from test.t order by b; | ||
| +------+-------+--------+ | ||
| | a | b | a/b | | ||
| +------+-------+--------+ | ||
| | 1 | 10000 | 0.0001 | | ||
| | 1 | 10001 | 0.0001 | | ||
| | 1 | 20000 | 0.0001 | | ||
| | 1 | 20001 | 0.0000 | | ||
| +------+-------+--------+ | ||
|
|
||
| mysql> drop table if exists test.t; | ||
| mysql> create table test.t(a decimal(10,0), b decimal(10,0)); | ||
| mysql> alter table test.t set tiflash replica 1 | ||
| mysql> insert into test.t values (2147483647, 1), (2147483647, 1073741823), (2147483647, 1073741824), (2147483647, 2147483646), (2147483647, 2147483647); | ||
| mysql> insert into test.t values (-2147483647, 1), (-2147483647, 1073741823), (-2147483647, 1073741824), (-2147483647, 2147483646), (-2147483647, 2147483647); | ||
| mysql> insert into test.t values (-2147483647, -1), (-2147483647, -1073741823), (-2147483647, -1073741824), (-2147483647, -2147483646), (-2147483647, -2147483647); | ||
| mysql> insert into test.t values (2147483647, -1), (2147483647, -1073741823), (2147483647, -1073741824), (2147483647, -2147483646), (2147483647, -2147483647); | ||
| func> wait_table test t | ||
| mysql> set tidb_enforce_mpp=1; select b, a, b/(a*10000) from test.t where a/b order by b; | ||
| +-------------+-------------+-------------+ | ||
| | b | a | b/(a*10000) | | ||
| +-------------+-------------+-------------+ | ||
| | -2147483647 | 2147483647 | -0.0001 | | ||
| | -2147483647 | -2147483647 | 0.0001 | | ||
| | -2147483646 | 2147483647 | -0.0001 | | ||
| | -2147483646 | -2147483647 | 0.0001 | | ||
| | -1073741824 | 2147483647 | -0.0001 | | ||
| | -1073741824 | -2147483647 | 0.0001 | | ||
| | -1073741823 | -2147483647 | 0.0000 | | ||
| | -1073741823 | 2147483647 | 0.0000 | | ||
| | -1 | 2147483647 | 0.0000 | | ||
| | -1 | -2147483647 | 0.0000 | | ||
| | 1 | -2147483647 | 0.0000 | | ||
| | 1 | 2147483647 | 0.0000 | | ||
| | 1073741823 | -2147483647 | 0.0000 | | ||
| | 1073741823 | 2147483647 | 0.0000 | | ||
| | 1073741824 | -2147483647 | -0.0001 | | ||
| | 1073741824 | 2147483647 | 0.0001 | | ||
| | 2147483646 | -2147483647 | -0.0001 | | ||
| | 2147483646 | 2147483647 | 0.0001 | | ||
| | 2147483647 | -2147483647 | -0.0001 | | ||
| | 2147483647 | 2147483647 | 0.0001 | | ||
| +-------------+-------------+-------------+ | ||
| mysql> delete from test.t; | ||
| mysql> insert into test.t values (2147483647, 9999999999), (9999999999, 2147483647), (1, 9999999999), (4999999999, 9999999999), (5000000000, 9999999999); | ||
| mysql> insert into test.t values (-2147483647, 9999999999), (-9999999999, 2147483647), (-1, 9999999999), (-4999999999, 9999999999), (-5000000000, 9999999999); | ||
| mysql> insert into test.t values (-2147483647, -9999999999), (-9999999999, -2147483647), (-1, -9999999999), (-4999999999, -9999999999), (-5000000000, -9999999999); | ||
| mysql> insert into test.t values (2147483647, -9999999999), (9999999999, -2147483647), (1, -9999999999), (4999999999, -9999999999), (5000000000, -9999999999); | ||
| mysql> set tidb_enforce_mpp=1; select b, a, b/(a*10000) from test.t where a/b order by b; | ||
| +-------------+-------------+-------------+ | ||
| | b | a | b/(a*10000) | | ||
| +-------------+-------------+-------------+ | ||
| | -9999999999 | 2147483647 | -0.0005 | | ||
| | -9999999999 | -4999999999 | 0.0002 | | ||
| | -9999999999 | 5000000000 | -0.0002 | | ||
| | -9999999999 | 4999999999 | -0.0002 | | ||
| | -9999999999 | -2147483647 | 0.0005 | | ||
| | -9999999999 | -5000000000 | 0.0002 | | ||
| | -2147483647 | -9999999999 | 0.0000 | | ||
| | -2147483647 | 9999999999 | 0.0000 | | ||
| | 2147483647 | 9999999999 | 0.0000 | | ||
| | 2147483647 | -9999999999 | 0.0000 | | ||
| | 9999999999 | -4999999999 | -0.0002 | | ||
| | 9999999999 | -2147483647 | -0.0005 | | ||
| | 9999999999 | -5000000000 | -0.0002 | | ||
| | 9999999999 | 2147483647 | 0.0005 | | ||
| | 9999999999 | 5000000000 | 0.0002 | | ||
| | 9999999999 | 4999999999 | 0.0002 | | ||
| +-------------+-------------+-------------+ |
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