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d54d36c45e
IB: * removed CONCURR_TRX from VTQ; * new fields in VTQ: COMMIT_ID, ISO_LEVEL. SQL: * renamed BEGIN_TS, COMMIT_TS to VTQ_BEGIN_TS, VTQ_COMMIT_TS; * new functions: VTQ_COMMIT_ID, VTQ_ISO_LEVEL, VTQ_TRX_ID, VTQ_TRX_SEES, VTQ_TRX_SEES_EQ; * versioned SELECT for IB uses VTQ_TRX_SEES, VTQ_TRX_SEES_EQ. Closes #71
103 lines
2.9 KiB
Text
103 lines
2.9 KiB
Text
set @@session.time_zone='+00:00';
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select ifnull(max(trx_id), 0) into @start_trx_id from information_schema.innodb_vtq;
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create procedure if not exists verify_vtq()
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begin
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set @i= 0;
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select
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@i:= @i + 1 as No,
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trx_id > 0 as A,
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commit_id >= trx_id as B,
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begin_ts > '1-1-1 0:0:0' as C,
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commit_ts > begin_ts as D
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from information_schema.innodb_vtq
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where trx_id > @start_trx_id;
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select ifnull(max(trx_id), 0)
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into @start_trx_id
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from information_schema.innodb_vtq;
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end~~
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create table t1(
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id int auto_increment primary key)
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with system versioning
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engine innodb;
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set transaction isolation level read uncommitted;
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insert into t1 values ();
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select iso_level = 'RU' from information_schema.innodb_vtq limit 1;
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iso_level = 'RU'
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1
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set transaction isolation level read committed;
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insert into t1 values ();
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select iso_level = 'RC' from information_schema.innodb_vtq limit 1;
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iso_level = 'RC'
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1
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set transaction isolation level serializable;
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insert into t1 values ();
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select iso_level = 'S' from information_schema.innodb_vtq limit 1;
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iso_level = 'S'
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1
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set transaction isolation level repeatable read;
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insert into t1 values ();
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select iso_level = 'RR' from information_schema.innodb_vtq limit 1;
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iso_level = 'RR'
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1
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set @ts0= now(6);
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insert into t1 values ();
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select sys_trx_start from t1 where id = last_insert_id() into @tx0;
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select trx_id = @tx0 from information_schema.innodb_vtq limit 1;
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trx_id = @tx0
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1
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set @ts1= now(6);
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insert into t1 values ();
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select sys_trx_start from t1 where id = last_insert_id() into @tx1;
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select trx_id = @tx1 from information_schema.innodb_vtq limit 1;
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trx_id = @tx1
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1
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set @ts2= now(6);
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insert into t1 values ();
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select sys_trx_start from t1 where id = last_insert_id() into @tx2;
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select trx_id = @tx2 from information_schema.innodb_vtq limit 1;
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trx_id = @tx2
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1
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set @ts3= now(6);
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select
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vtq_trx_id(@ts0) < @tx0 as A,
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vtq_trx_id(@ts0, true) = @tx0 as B,
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vtq_trx_id(@ts1) = @tx0 as C,
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vtq_trx_id(@ts1, true) = @tx1 as D,
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vtq_trx_id(@ts2) = @tx1 as E,
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vtq_trx_id(@ts2, true) = @tx2 as F,
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vtq_trx_id(@ts3) = @tx2 as G,
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vtq_trx_id(@ts3, true) is null as H;
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A B C D E F G H
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1 1 1 1 1 1 1 1
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select
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vtq_commit_id(@ts0) < @tx0 as A,
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vtq_commit_id(@ts0, true) = vtq_commit_id(null, @tx0) as B,
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vtq_commit_id(@ts1) = vtq_commit_id(null, @tx0) as C,
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vtq_commit_id(@ts1, true) = vtq_commit_id(null, @tx1) as D,
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vtq_commit_id(@ts2) = vtq_commit_id(null, @tx1) as E,
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vtq_commit_id(@ts2, true) = vtq_commit_id(null, @tx2) as F,
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vtq_commit_id(@ts3) = vtq_commit_id(null, @tx2) as G,
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vtq_commit_id(@ts3, true) is null as H;
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A B C D E F G H
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1 1 1 1 1 1 1 1
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select
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vtq_trx_sees(@tx1, @tx0) as A,
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not vtq_trx_sees(@tx0, @tx1) as B,
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vtq_trx_sees_eq(@tx1, @tx1) as C,
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not vtq_trx_sees(@tx1, @tx1) as D,
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vtq_trx_sees(@tx2, 0) as E,
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vtq_trx_sees(0, @tx2) is null as F,
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vtq_trx_sees(-1, @tx2) as H;
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A B C D E F H
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1 1 1 1 1 1 1
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drop table t1;
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call verify_vtq;
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No A B C D
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1 1 1 1 1
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2 1 1 1 1
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3 1 1 1 1
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4 1 1 1 1
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5 1 1 1 1
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6 1 1 1 1
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7 1 1 1 1
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drop procedure verify_vtq;
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