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ed1696f6b9
we store 7 bytes (1 + 2*3) in every Query_log_event. In the future if users want binlog optimized for small size and less safe, we could add --binlog-no-charset (and binlog-no-sql-mode etc): charset info is something by design optional (even if for now we don't offer possibility to disable it): it's not a binlog format change. We try to reduce the number of get_charset() calls in the slave SQL thread to a minimum by caching the charset read from the previous event (which will often be equal to the one of the current event). We don't use SET ONE_SHOT for charset-aware repl (we still do for timezones, will be fixed later). No more errors if one changes the global value of charset vars on master or slave (as we log charset info in all Query_log_event). Not fixing Load_log_event as it will be rewritten soon by Dmitri. Testing how mysqlbinlog behaves in rpl_charset.test. mysqlbinlog needs to know where charset file is (to be able to convert a charset number found in binlog (e.g. in User_var_log_event) to a charset name); mysql-test-run needs to pass the correct value for this option to mysqlbinlog. Many result udpates (adding charset info into every event shifts log_pos in SHOW BINLOG EVENTS). Roughly the same job is to be done for timezones :)
110 lines
3.3 KiB
Text
110 lines
3.3 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 95;
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Log_name Pos Event_type Server_id End_log_pos Info
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slave-bin.000001 95 Query 1 186 use `test`; create table t1(n char(30))
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slave-bin.000001 186 User var 2 229 @`i1`=12345678901234
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slave-bin.000001 229 User var 2 272 @`i2`=-12345678901234
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slave-bin.000001 272 User var 2 315 @`i3`=0
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slave-bin.000001 315 User var 2 358 @`i4`=-1
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slave-bin.000001 358 Query 1 470 use `test`; insert into t1 values (@i1), (@i2), (@i3), (@i4)
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slave-bin.000001 470 User var 2 513 @`r1`=12.5
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slave-bin.000001 513 User var 2 556 @`r2`=-12.5
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slave-bin.000001 556 Query 1 654 use `test`; insert into t1 values (@r1), (@r2)
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slave-bin.000001 654 User var 2 703 @`s1`=_latin1 0x5468697320697320612074657374 COLLATE latin1_swedish_ci
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slave-bin.000001 703 User var 2 738 @`s2`=_latin1 "" COLLATE latin1_swedish_ci
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slave-bin.000001 738 User var 2 780 @`s3`=_latin1 0x61626327646566 COLLATE latin1_swedish_ci
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slave-bin.000001 780 User var 2 822 @`s4`=_latin1 0x6162635C646566 COLLATE latin1_swedish_ci
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slave-bin.000001 822 User var 2 864 @`s5`=_latin1 0x61626327646566 COLLATE latin1_swedish_ci
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slave-bin.000001 864 Query 1 983 use `test`; insert into t1 values (@s1), (@s2), (@s3), (@s4), (@s5)
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slave-bin.000001 983 User var 2 1009 @`n1`=NULL
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slave-bin.000001 1009 Query 1 1100 use `test`; insert into t1 values (@n1)
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slave-bin.000001 1100 User var 2 1126 @`n2`=NULL
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slave-bin.000001 1126 Query 1 1217 use `test`; insert into t1 values (@n2)
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slave-bin.000001 1217 Query 1 1334 use `test`; insert into t1 values (@a:=0), (@a:=@a+1), (@a:=@a+1)
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slave-bin.000001 1334 User var 2 1376 @`a`=2
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slave-bin.000001 1376 Query 1 1477 use `test`; insert into t1 values (@a+(@b:=@a+1))
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slave-bin.000001 1477 User var 2 1514 @`q`=_latin1 0x616263 COLLATE latin1_swedish_ci
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slave-bin.000001 1514 Query 1 1647 use `test`; insert t1 values (@q), (@q:=concat(@q, 'n1')), (@q:=concat(@q, 'n2'))
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slave-bin.000001 1647 User var 2 1689 @`a`=5
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slave-bin.000001 1689 Query 1 1784 use `test`; insert into t1 values (@a),(@a)
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slave-bin.000001 1784 User var 2 1809 @`a`=NULL
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slave-bin.000001 1809 Query 1 1911 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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