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b549af6913
Server crashes in Field::register_field_in_read_map upon select from partitioned table with indexed by prefix virtual column. After several read-mark fixes a problem has surfaced: Since KEY (c(10),a) uses only a prefix of c, a new field is created, duplicated from table->field[3], with a new length. However, vcol_inco->expr is not copied. Therefore, (*key_info)->key_part[i].field->vcol_info->expr was left NULL in ha_partition::index_init(). Solution: copy vcol_info from table field when it's set up.
121 lines
3 KiB
Text
121 lines
3 KiB
Text
SET @@session.default_storage_engine = 'MyISAM';
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drop table if exists t1;
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# Case 1. Partitioning by RANGE based on a non-stored generated column.
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CREATE TABLE t1 (
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a DATE NOT NULL,
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b int generated always as (year(a)) virtual
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)
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PARTITION BY RANGE( b ) (
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PARTITION p0 VALUES LESS THAN (2006),
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PARTITION p2 VALUES LESS THAN (2008)
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);
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insert into t1 values ('2006-01-01',default);
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insert into t1 values ('2007-01-01',default);
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insert into t1 values ('2005-01-01',default);
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select * from t1;
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a b
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2005-01-01 2005
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2006-01-01 2006
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2007-01-01 2007
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# Modify the expression of generated column b
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ALTER TABLE t1 modify b int generated always as (year(a)-1) virtual;
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select * from t1;
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a b
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2005-01-01 2004
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2006-01-01 2005
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2007-01-01 2006
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drop table t1;
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# Case 2. Partitioning by LIST based on a stored generated column.
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CREATE TABLE t1 (a int, b int generated always as (a % 3 ) stored)
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PARTITION BY LIST (a+1)
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(PARTITION p1 VALUES IN (1), PARTITION p2 VALUES IN (2));
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insert into t1 values (1,default);
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select * from t1;
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a b
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1 1
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select * from t1;
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a b
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1 1
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drop table t1;
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# Case 3. Partitioning by HASH based on a non-stored generated column.
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CREATE TABLE t1 (
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a DATE NOT NULL,
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b int generated always as (year(a)) virtual
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)
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PARTITION BY HASH( b % 3 ) PARTITIONS 3;
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insert into t1 values ('2005-01-01',default);
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insert into t1 values ('2006-01-01',default);
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select * from t1;
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a b
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2005-01-01 2005
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2006-01-01 2006
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# Modify the expression of generated column b
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ALTER TABLE t1 modify b int generated always as (year(a)-1) virtual;
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select * from t1;
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a b
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2005-01-01 2004
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2006-01-01 2005
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drop table t1;
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#
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# Bug#21779011 INVALID READS AND SENDING RANDOM SERVER MEMORY BACK
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# TO CLIENT
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#
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CREATE TABLE t (
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c INTEGER GENERATED ALWAYS AS (2) VIRTUAL,
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d INTEGER,
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KEY (d)
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) PARTITION BY KEY (d) PARTITIONS 2;
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INSERT INTO t (d) VALUES (1),(1),(2),(2);
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SELECT c FROM t WHERE d >= 1 GROUP BY d LIMIT 2;
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c
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2
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2
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DROP TABLE t;
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#
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# Bug#21779554: CHECK_MISPLACED_ROWS BOGUS "FOUND A MISPLACED ROW"
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# AND CRASHES
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#
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CREATE TABLE t(a INT,b INT GENERATED ALWAYS AS (1) VIRTUAL,c INT)
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PARTITION BY KEY (b)PARTITIONS 6;
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INSERT INTO t VALUES();
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CHECK TABLE t EXTENDED;
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Table Op Msg_type Msg_text
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test.t check status OK
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FLUSH TABLES;
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CHECK TABLE t EXTENDED;
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Table Op Msg_type Msg_text
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test.t check status OK
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DROP TABLE t;
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#
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# MDEV-18166 ASSERT_COLUMN_MARKED_FOR_READ failed on tables with vcols
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#
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CREATE TABLE t1 (
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a INT,
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b INT,
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c BIT(4) NOT NULL DEFAULT b'0',
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pk INTEGER AUTO_INCREMENT,
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d BIT(4) AS (c) VIRTUAL,
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PRIMARY KEY(pk),
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KEY (b,d)
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) PARTITION BY HASH(pk);
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INSERT INTO t1 () VALUES (),();
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UPDATE t1 SET a = 0 WHERE b IS NULL ORDER BY pk;
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DROP TABLE t1;
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#
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# MDEV-26220 Server crashes with indexed by prefix virtual column
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#
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CREATE TABLE t1 (pk INT PRIMARY KEY, a INT, b CHAR(20), c CHAR(20) AS (b),
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KEY (c(10),a)) PARTITION BY HASH(pk);
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INSERT INTO t1 (pk,a,b) VALUES (1,10,'foo'),(2,11,'baz');
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SELECT a FROM t1;
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a
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11
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10
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DROP TABLE t1;
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DROP VIEW IF EXISTS v1,v2;
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DROP TABLE IF EXISTS t1,t2,t3;
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DROP PROCEDURE IF EXISTS p1;
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DROP FUNCTION IF EXISTS f1;
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DROP TRIGGER IF EXISTS trg1;
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DROP TRIGGER IF EXISTS trg2;
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set sql_warnings = 0;
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