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BUG#16217 forced to introduce a separate mysql client command to adopt its

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internal charset to one associated with currently being handled query. 
To note such a query can come from interactive client either.

There was a discussion within replication team and Monty who's suggestion won.
It avoids straightforward parsing of all `set' queries that could affect client side 
character set. 
According to the idea, mysql client does not parse `set' queries but rather cares of
`charset new_cs_name' command.
This command is generated by mysqlbinlog in form of exclaiming comment (Lars' suggestion)
so that enlightened clients like `mysql' knows what to do with it.

Interactive human can switch between many multi-byte charsets during the session 
providing the command explicitly. 
To note that setting new internal mysql's charset does not
trigger sending any `SET' sql statement to the server. 


client/mysql.cc:
  BUG#16217 revealed the problem of switching between charsets in mysql client.
  Such switching is necessary in a case when being scanned query consists of 
  multi-byte chars and internal charset was initialized differently. mysql finds 
  `/' escape and misiterprete it 
  while in fact one could be a part of a multi-byte symbol like the bug page reported. 
  
  This patch extends mysql `charset' command, '\C' shortcut.
mysql-test/r/ctype_ucs_binlog.result:
  comment line generated by mysqlbinlog for processing of logs with multi-byte chars.
mysql-test/r/mysql.result:
  results are altered due to #16217
mysql-test/r/mysqlbinlog.result:
  Results are altered due to #16217
mysql-test/r/mysqlbinlog2.result:
  commeted command for mysql client due to multi-byte binlog
mysql-test/r/rpl_charset.result:
  commented command for mysql due to multi-byte binlogs
mysql-test/r/rpl_timezone.result:
  commented command for mysql client due to multi-byte binlogs
mysql-test/r/user_var-binlog.result:
  commented command for mysql client due to multi-byte binlogs
mysql-test/t/mysql.test:
  Main test for mysql client is extended to check `charset' command.
mysql-test/t/mysqlbinlog.test:
  Checking how /*! \C cs_name */ are added to the output of mysqlbinlog.
  The exclaiming comment is for further processing by mysql client.
  The added part mimics the failure to recover tables from binlog - see BUG#16217.
sql/log_event.cc:
  Sending into output instructions for mysql client to switch internally 
  to appropriate charset.
  mysql client is supposed to be invoked with --default-character-set=
  "to default character set of the server created the binlog".
This commit is contained in:
unknown 2006-02-09 16:23:09 +02:00
commit e025e47a76
11 changed files with 139 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

33
mysql-test/r/mysqlbinlog2.result
View file

@ -22,6 +22,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -52,6 +53,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "a");
SET INSERT_ID=2;
@ -78,6 +80,7 @@ use test;
SET TIMESTAMP=1579609946;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "d");
SET INSERT_ID=5;
@ -95,6 +98,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -119,6 +123,7 @@ use test;
SET TIMESTAMP=1579609944;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "c");
SET INSERT_ID=4;
@ -139,6 +144,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -159,6 +165,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -181,6 +188,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -196,6 +204,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "a");
SET INSERT_ID=2;
@ -215,6 +224,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -229,6 +239,7 @@ use test;
SET TIMESTAMP=1579609946;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "d");
SET INSERT_ID=5;
@ -239,6 +250,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -253,6 +265,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -284,6 +297,7 @@ use test;
SET TIMESTAMP=1579609944;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "c");
SET INSERT_ID=4;
@ -297,6 +311,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -311,6 +326,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -331,6 +347,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -361,6 +378,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "a");
SET INSERT_ID=2;
@ -387,6 +405,7 @@ use test;
SET TIMESTAMP=1579609946;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "d");
SET INSERT_ID=5;
@ -404,6 +423,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -428,6 +448,7 @@ use test;
SET TIMESTAMP=1579609944;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "c");
SET INSERT_ID=4;
@ -448,6 +469,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -468,6 +490,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -490,6 +513,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -505,6 +529,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "a");
SET INSERT_ID=2;
@ -524,6 +549,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -538,6 +564,7 @@ use test;
SET TIMESTAMP=1579609946;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "d");
SET INSERT_ID=5;
@ -548,6 +575,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -562,6 +590,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -593,6 +622,7 @@ use test;
SET TIMESTAMP=1579609944;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "c");
SET INSERT_ID=4;
@ -606,6 +636,7 @@ use test;
SET TIMESTAMP=1579609943;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
insert into t1 values(null, "f");
# End of log file
@ -620,6 +651,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;
@ -640,6 +672,7 @@ use test;
SET TIMESTAMP=1579609942;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1;
SET @@session.sql_mode=0;
/*!\C latin1 */;
SET @@session.character_set_client=8,@@session.collation_connection=8,@@session.collation_server=8;
create table t1 (a int auto_increment not null primary key, b char(3));
SET INSERT_ID=1;