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a7bc7ebd8a
Due to an invalid check for NULL of the second argument of the Item_func_round items performed in the code of Item_func_round::real_op the function ROUND sometimes could return wrong results.
109 lines
2.5 KiB
Text
109 lines
2.5 KiB
Text
drop table if exists t1,t2;
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create table t1 (a int, b int, v int as (a+1), index idx(b));
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insert into t1(a, b) values
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(4, 40), (3, 30), (5, 50), (7, 70), (8, 80), (2, 20), (1, 10);
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select * from t1 order by b;
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a b v
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1 10 2
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2 20 3
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3 30 4
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4 40 5
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5 50 6
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7 70 8
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8 80 9
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delete from t1 where v > 6 order by b limit 1;
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select * from t1 order by b;
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a b v
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1 10 2
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2 20 3
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3 30 4
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4 40 5
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5 50 6
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8 80 9
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update t1 set a=v order by b limit 1;
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select * from t1 order by b;
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a b v
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2 10 3
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2 20 3
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3 30 4
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4 40 5
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5 50 6
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8 80 9
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drop table t1;
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CREATE TABLE t1 (
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a int NOT NULL DEFAULT '0',
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v double AS ((1, a)) VIRTUAL
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);
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ERROR HY000: Expression for computed column cannot return a row
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CREATE TABLE t1 (
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a CHAR(255) BINARY NOT NULL DEFAULT 0,
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b CHAR(255) BINARY NOT NULL DEFAULT 0,
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v CHAR(255) BINARY AS (CONCAT(a,b)) VIRTUAL );
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INSERT INTO t1(a,b) VALUES ('4','7'), ('4','6');
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SELECT 1 AS C FROM t1 ORDER BY v;
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C
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1
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1
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DROP TABLE t1;
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CREATE TABLE t1(a int, b int DEFAULT 0, v INT AS (b+10) PERSISTENT);
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INSERT INTO t1(a) VALUES (1);
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SELECT b, v FROM t1;
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b v
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0 10
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DROP TABLE t1;
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CREATE TABLE t1(a int DEFAULT 100, v int AS (a+1) PERSISTENT);
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INSERT INTO t1 () VALUES ();
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CREATE TABLE t2(a int DEFAULT 100 , v int AS (a+1));
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INSERT INTO t2 () VALUES ();
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SELECT a, v FROM t1;
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a v
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100 101
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SELECT a, v FROM t2;
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a v
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100 101
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DROP TABLE t1,t2;
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CREATE TABLE t1 (
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a datetime NOT NULL DEFAULT '2000-01-01',
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v boolean AS (a < '2001-01-01')
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);
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INSERT INTO t1(a) VALUES ('2002-02-15');
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INSERT INTO t1(a) VALUES ('2000-10-15');
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SELECT a, v FROM t1;
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a v
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2002-02-15 00:00:00 0
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2000-10-15 00:00:00 1
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SELECT a, v FROM t1;
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a v
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2002-02-15 00:00:00 0
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2000-10-15 00:00:00 1
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CREATE TABLE t2 (
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a datetime NOT NULL DEFAULT '2000-01-01',
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v boolean AS (a < '2001-01-01') PERSISTENT
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);
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INSERT INTO t2(a) VALUES ('2002-02-15');
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INSERT INTO t2(a) VALUES ('2000-10-15');
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SELECT * FROM t2;
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a v
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2002-02-15 00:00:00 0
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2000-10-15 00:00:00 1
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DROP TABLE t1, t2;
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CREATE TABLE t1 (p int, a double NOT NULL, v double AS (ROUND(a,p)) VIRTUAL);
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INSERT INTO t1 VALUES (0,1,0);
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Warnings:
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Warning 1645 The value specified for computed column 'v' in table 't1' ignored
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INSERT INTO t1 VALUES (NULL,0,0);
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Warnings:
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Warning 1645 The value specified for computed column 'v' in table 't1' ignored
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SELECT a, p, v, ROUND(a,p), ROUND(a,p+NULL) FROM t1;
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a p v ROUND(a,p) ROUND(a,p+NULL)
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1 0 1 1 NULL
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0 NULL NULL NULL NULL
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DROP TABLE t1;
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CREATE TABLE t1 (p int, a double NOT NULL);
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INSERT INTO t1(p,a) VALUES (0,1);
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INSERT INTO t1(p,a) VALUES (NULL,0);
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SELECT a, p, ROUND(a,p), ROUND(a,p+NULL) FROM t1;
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a p ROUND(a,p) ROUND(a,p+NULL)
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1 0 1 NULL
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0 NULL NULL NULL
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DROP TABLE t1;
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