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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
110 lines
3.1 KiB
Text
110 lines
3.1 KiB
Text
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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reset master;
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create table t1(n char(30));
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set @i1:=12345678901234, @i2:=-12345678901234, @i3:=0, @i4:=-1;
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set @s1:='This is a test', @r1:=12.5, @r2:=-12.5;
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set @n1:=null;
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set @s2:='', @s3:='abc\'def', @s4:= 'abc\\def', @s5:= 'abc''def';
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insert into t1 values (@i1), (@i2), (@i3), (@i4);
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insert into t1 values (@r1), (@r2);
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insert into t1 values (@s1), (@s2), (@s3), (@s4), (@s5);
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insert into t1 values (@n1);
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insert into t1 values (@n2);
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insert into t1 values (@a:=0), (@a:=@a+1), (@a:=@a+1);
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insert into t1 values (@a+(@b:=@a+1));
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set @q:='abc';
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insert t1 values (@q), (@q:=concat(@q, 'n1')), (@q:=concat(@q, 'n2'));
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set @a:=5;
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insert into t1 values (@a),(@a);
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insert into t1 values (@a),(@a),(@a*5);
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select * from t1;
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n
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12345678901234
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-12345678901234
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0
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-1
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12.5
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-12.5
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This is a test
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abc'def
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abc\def
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abc'def
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NULL
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NULL
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0
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1
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2
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5
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abc
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abcn1
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abcn1n2
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5
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5
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NULL
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NULL
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NULL
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select * from t1;
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n
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12345678901234
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-12345678901234
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0
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-1
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12.5
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-12.5
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This is a test
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abc'def
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abc\def
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abc'def
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NULL
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NULL
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0
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1
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2
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5
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abc
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abcn1
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abcn1n2
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5
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5
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NULL
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NULL
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NULL
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show binlog events from 98;
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Log_name Pos Event_type Server_id End_log_pos Info
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slave-bin.000001 # Query 1 # use `test`; create table t1(n char(30))
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slave-bin.000001 # User var 2 # @`i1`=12345678901234
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slave-bin.000001 # User var 2 # @`i2`=-12345678901234
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slave-bin.000001 # User var 2 # @`i3`=0
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slave-bin.000001 # User var 2 # @`i4`=-1
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@i1), (@i2), (@i3), (@i4)
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slave-bin.000001 # User var 2 # @`r1`=12.5
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slave-bin.000001 # User var 2 # @`r2`=-12.5
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@r1), (@r2)
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slave-bin.000001 # User var 2 # @`s1`=_latin1 0x5468697320697320612074657374 COLLATE latin1_swedish_ci
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slave-bin.000001 # User var 2 # @`s2`=_latin1 "" COLLATE latin1_swedish_ci
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slave-bin.000001 # User var 2 # @`s3`=_latin1 0x61626327646566 COLLATE latin1_swedish_ci
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slave-bin.000001 # User var 2 # @`s4`=_latin1 0x6162635C646566 COLLATE latin1_swedish_ci
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slave-bin.000001 # User var 2 # @`s5`=_latin1 0x61626327646566 COLLATE latin1_swedish_ci
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@s1), (@s2), (@s3), (@s4), (@s5)
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slave-bin.000001 # User var 2 # @`n1`=NULL
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@n1)
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slave-bin.000001 # User var 2 # @`n2`=NULL
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@n2)
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a:=0), (@a:=@a+1), (@a:=@a+1)
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slave-bin.000001 # User var 2 # @`a`=2
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a+(@b:=@a+1))
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slave-bin.000001 # User var 2 # @`q`=_latin1 0x616263 COLLATE latin1_swedish_ci
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slave-bin.000001 # Query 1 # use `test`; insert t1 values (@q), (@q:=concat(@q, 'n1')), (@q:=concat(@q, 'n2'))
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slave-bin.000001 # User var 2 # @`a`=5
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a),(@a)
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slave-bin.000001 # User var 2 # @`a`=NULL
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slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a),(@a),(@a*5)
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drop table t1;
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stop slave;
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