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DROP DATABASE would internally execute DROP TABLE on every contained table and finally remove the directory. In InnoDB, DROP TABLE is sometimes executed in the background. The table would be renamed to a name that starts with #sql. The existence of these files would prevent DROP DATABASE from succeeding. CREATE OR REPLACE DATABASE can internally execute DROP DATABASE if the directory already exists. This could fail due to the InnoDB background DROP TABLE, possibly due to some tables that were leftovers from earlier tests.
177 lines
6.3 KiB
Plaintext
177 lines
6.3 KiB
Plaintext
set @s= '1992-01-01';
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set @e= '1999-12-31';
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create table t (s date, e date);
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# period start/end columns are implicit NOT NULL
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alter table t add period for a(s, e);
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `a` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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create or replace table t (s date, e date);
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alter table t change s s date, add period for a(s, e);
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `a` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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alter table t add id int;
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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`id` int(11) DEFAULT NULL,
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PERIOD FOR `a` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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alter table t drop id;
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `a` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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insert t values(@e, @s);
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ERROR 23000: CONSTRAINT `a` failed for `test`.`t`
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alter table t drop constraint a;
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ERROR HY000: Can't DROP CONSTRAINT `a`. Use DROP PERIOD `a` for this
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# no-op
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alter table t drop period if exists for b;
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Warnings:
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Note 1091 Can't DROP PERIOD `b`; check that it exists
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# no-op
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alter table t add period if not exists for a(e, s);
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Warnings:
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Note 1060 Duplicate column name 'a'
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alter table t drop period if exists for a;
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# no-op
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alter table t drop period if exists for a;
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Warnings:
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Note 1091 Can't DROP PERIOD `a`; check that it exists
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alter table t add period for a(s, e), add period if not exists for a(e, s);
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `a` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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alter table t drop period for a;
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# Constraint is dropped
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insert t values(@e, @s);
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alter table t drop period for a;
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ERROR 42000: Can't DROP PERIOD `a`; check that it exists
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alter table t add period for a(s, e), drop period for a;
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ERROR 42000: Can't DROP PERIOD `a`; check that it exists
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truncate t;
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alter table t add period for a(s, e);
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insert t values(@e, @s);
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ERROR 23000: CONSTRAINT `a` failed for `test`.`t`
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alter table t add period for a(s, e), drop period for a;
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insert t values(@e, @s);
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ERROR 23000: CONSTRAINT `a` failed for `test`.`t`
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alter table t add s1 date not null, add period for b(s1, e), drop period for a;
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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`s1` date NOT NULL,
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PERIOD FOR `b` (`s1`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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insert t(s, s1, e) values(@e, @s, @e);
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insert t(s, s1, e) values(@e, @e, @s);
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ERROR 23000: CONSTRAINT `b` failed for `test`.`t`
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create table t1 like t;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`s` date NOT NULL,
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`e` date NOT NULL,
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`s1` date NOT NULL,
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PERIOD FOR `b` (`s1`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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create table t2 (period for b(s,e)) select * from t;
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ERROR 23000: CONSTRAINT `b` failed for `test`.`t2`
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create table t2 (period for b(s1,e)) select * from t;
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drop table t2;
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# SQL16 11.27 <add table period definition>, Syntax Rules, 5)g)
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# The declared type of BC1 shall be either DATE or a timestamp type
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# and shall be equivalent to the declared type of BC2.
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create or replace table t (s timestamp not null, e timestamp(6) not null);
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alter table t add period for a(s, e);
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ERROR HY000: Fields of PERIOD FOR `a` have different types
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# SQL16 11.27 <add table period definition>, Syntax Rules, 5)c)
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# No column of T shall have a column name that is equivalent to ATPN.
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create or replace table t (a int, s date, e date);
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alter table t add period for a(s, e);
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ERROR 42S21: Duplicate column name 'a'
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# SQL16 11.27 <add table period definition>, Syntax Rules, 5)i)
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# Neither BC1 nor BC2 shall be an identity column, a generated column,
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# a system-time period start column, or a system-time period end column.
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create or replace table t (id int primary key,
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s date,
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e date generated always as (s+1));
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alter table t add period for a(s, e);
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ERROR HY000: Period field `e` cannot be GENERATED ALWAYS AS
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create or replace table t (id int primary key,
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s date,
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e date as (s+1) VIRTUAL);
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alter table t add period for a(s, e);
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ERROR HY000: Period field `e` cannot be GENERATED ALWAYS AS
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create or replace table t (id int primary key, s timestamp(6), e timestamp(6),
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st timestamp(6) as row start,
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en timestamp(6) as row end,
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period for system_time (st, en)) with system versioning;
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alter table t add period for a(s, en);
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ERROR HY000: Period field `en` cannot be GENERATED ALWAYS AS
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# SQL16 11.27 <add table period definition>, Syntax Rules, 5)b)
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# The table descriptor of T shall not include a period descriptor other
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# than a system-time period descriptor.
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alter table t add period for a(s, e);
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alter table t add period for b(s, e);
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ERROR HY000: Cannot specify more than one application-time period
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# SQL16, Part 2, 11.3 <table definition>, Syntax Rules, 2)e)v)2)B)
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# Let S be the schema identified by the explicit or implicit
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# <schema name> of TN. Let IDCN be an implementation-dependent
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# <constraint name> that is not equivalent to the <constraint name> of
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# any table constraint descriptor included in S. The following
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# <table constraint definition> is implicit:
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# CONSTRAINT IDCN CHECK ( CN1 < CN2 )
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#
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# Due to the above standard limitation, the constraint name can't always
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# match the period name. So it matches when possible; and when not, it
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# is unique not taken name prefixed with period name.
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create or replace table t (x int, s date, e date,
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period for mytime(s, e));
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`x` int(11) DEFAULT NULL,
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `mytime` (`s`, `e`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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alter table t add constraint mytime check (x > 1);
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`x` int(11) DEFAULT NULL,
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`s` date NOT NULL,
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`e` date NOT NULL,
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PERIOD FOR `mytime` (`s`, `e`),
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CONSTRAINT `mytime` CHECK (`x` > 1)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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insert t values (2, @e, @s);
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ERROR 23000: CONSTRAINT `mytime_1` failed for `test`.`t`
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alter table t add constraint mytime_1 check (x > 2);
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insert t values (3, @e, @s);
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ERROR 23000: CONSTRAINT `mytime_2` failed for `test`.`t`
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drop table t;
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