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SQL: truncate syntax and privilege [closes #229]
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@ -1,173 +1,37 @@
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create table t (a int);
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truncate t for system_time all;
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truncate t to system_time now();
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ERROR HY000: System Versioning required: t
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create procedure truncate_history_of_t()
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begin
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prepare stmt from 'truncate t for system_time between \'1-1-1\' and now(6)';
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execute stmt;
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drop prepare stmt;
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end~~
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create or replace table t (a int) with system versioning;
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insert into t values (1);
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update t set a=2;
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select * from t for system_time all;
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a
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2
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1
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set @test = 'correct';
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create trigger trg_before before delete on t for each row set @test = 'incorrect';
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create trigger trg_after after delete on t for each row set @test = 'incorrect';
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truncate t for system_time all;
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select * from t for system_time all;
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a
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2
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truncate t to system_time now(6);
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select @test from t;
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@test
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correct
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drop trigger trg_before;
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drop trigger trg_after;
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update t set a=3;
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update t set a=4;
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truncate t for system_time as of timestamp now(6);
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select * from t for system_time all;
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a
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4
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2
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3
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truncate t for system_time between '1-1-1' and now(6);
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select * from t for system_time all;
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a
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4
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update t set a=5;
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truncate t for system_time from '1-1-1' to now(6);
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select * from t for system_time all;
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a
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5
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update t set a=6;
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call truncate_history_of_t();
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select * from t for system_time all;
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a
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6
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set @ts1 = now(6);
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update t set a=7;
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set @ts2 = now(6);
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update t set a=8;
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truncate t for system_time from '1-1-1' to @ts1;
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select * from t for system_time all;
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a
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8
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7
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update t set a=9;
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truncate t for system_time between '1-1-1' and @ts2;
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select * from t for system_time all;
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a
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9
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8
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create or replace table t (a int) with system versioning engine=innodb;
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insert into t values (1);
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update t set a=2;
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select * from t for system_time all;
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a
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2
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1
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truncate t for system_time all;
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select * from t for system_time all;
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a
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2
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update t set a=3;
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update t set a=4;
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truncate t for system_time as of timestamp now(6);
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select * from t for system_time all;
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a
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4
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2
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3
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truncate t for system_time between '1-1-1' and now(6);
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select * from t for system_time all;
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a
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4
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update t set a=5;
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truncate t for system_time from '1-1-1' to now(6);
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select * from t for system_time all;
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a
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5
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update t set a=6;
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call truncate_history_of_t();
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select * from t for system_time all;
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a
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6
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set @ts1 = now(6);
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update t set a=7;
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set @ts2 = now(6);
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update t set a=8;
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truncate t for system_time from '1-1-1' to timestamp @ts1;
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select * from t for system_time all;
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a
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8
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7
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update t set a=9;
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truncate t for system_time between '1-1-1' and timestamp @ts2;
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select * from t for system_time all;
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a
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9
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8
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create or replace table t (a int) with system versioning;
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insert into t values (1), (2);
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update t set a=11 where a=1;
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set @ts1=now(6);
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update t set a=22 where a=2;
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select * from t for system_time all;
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a
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11
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22
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1
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2
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select * from t for system_time before timestamp @ts1;
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a
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1
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truncate t for system_time before timestamp @ts1;
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select * from t for system_time all;
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a
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11
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22
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2
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truncate t for system_time before timestamp now(6);
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select * from t for system_time all;
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a
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11
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22
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create or replace table t (a int) with system versioning engine=innodb;
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insert into t values (1), (2);
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update t set a=11 where a=1;
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set @ts1=now(6);
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update t set a=22 where a=2;
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select * from t for system_time all;
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a
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11
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22
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1
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2
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select * from t for system_time before timestamp @ts1;
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a
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1
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insert into t values (33);
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select max(sys_trx_start + 0) from t into @tx;
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select * from t for system_time before transaction @tx;
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a
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1
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2
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truncate t for system_time before timestamp @ts1;
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select * from t for system_time all;
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a
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11
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22
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2
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33
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truncate t for system_time before timestamp now(6);
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select * from t for system_time all;
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a
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11
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22
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33
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drop table t;
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drop procedure truncate_history_of_t;
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create table t (a int) with system versioning;
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insert into t values (1), (2);
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update t set a=11 where a=1;
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set @ts1=now(6);
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update t set a=22 where a=2;
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select * from t for system_time all;
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a
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11
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22
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1
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2
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truncate t to system_time timestamp @ts1;
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select * from t for system_time all;
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a
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11
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22
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2
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truncate table t to system_time timestamp now(6);
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select * from t for system_time all;
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a
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11
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22
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drop table t;
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