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f169114042
Now one can use user variables as target for data loaded from file (besides table's columns). Also LOAD DATA got new SET-clause in which one can specify values for table columns as expressions. For example the following is possible: LOAD DATA INFILE 'words.dat' INTO TABLE t1 (a, @b) SET c = @b + 1; This patch also implements new way of replicating LOAD DATA. Now we do it similarly to other queries. We store LOAD DATA query in new Execute_load_query event (which is last in the sequence of events representing LOAD DATA). When we are executing this event we simply rewrite part of query which holds name of file (we use name of temporary file) and then execute it as usual query. In the beggining of this sequence we use Begin_load_query event which is almost identical to Append_file event
41 lines
1.8 KiB
Plaintext
41 lines
1.8 KiB
Plaintext
stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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create table t1 (a int);
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insert into t1 values (10);
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create table t2 (a int);
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create table t3 (a int) engine=merge union(t1);
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create table t4 (a int);
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insert into t4 select * from t3;
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rename table t1 to t5, t2 to t1;
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flush no_write_to_binlog tables;
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show binlog events;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Format_desc 1 # Server ver: SERVER_VERSION, Binlog ver: 4
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master-bin.000001 # Query 1 # use `test`; create table t1 (a int)
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master-bin.000001 # Query 1 # use `test`; insert into t1 values (10)
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master-bin.000001 # Query 1 # use `test`; create table t2 (a int)
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master-bin.000001 # Query 1 # use `test`; create table t3 (a int) engine=merge union(t1)
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master-bin.000001 # Query 1 # use `test`; create table t4 (a int)
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master-bin.000001 # Query 1 # use `test`; insert into t4 select * from t3
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master-bin.000001 # Query 1 # use `test`; rename table t1 to t5, t2 to t1
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select * from t3;
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a
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flush tables;
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show binlog events;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Format_desc 1 # Server ver: SERVER_VERSION, Binlog ver: 4
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master-bin.000001 # Query 1 # use `test`; create table t1 (a int)
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master-bin.000001 # Query 1 # use `test`; insert into t1 values (10)
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master-bin.000001 # Query 1 # use `test`; create table t2 (a int)
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master-bin.000001 # Query 1 # use `test`; create table t3 (a int) engine=merge union(t1)
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master-bin.000001 # Query 1 # use `test`; create table t4 (a int)
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master-bin.000001 # Query 1 # use `test`; insert into t4 select * from t3
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master-bin.000001 # Query 1 # use `test`; rename table t1 to t5, t2 to t1
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master-bin.000001 # Query 1 # use `test`; flush tables
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select * from t3;
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a
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