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WL#874 "Extended LOAD DATA".

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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
This commit is contained in:
dlenev@brandersnatch.localdomain
2005-03-16 04:32:47 +03:00
parent 3f6fdabe4f
commit f169114042
69 changed files with 1528 additions and 579 deletions
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8
mysql-test/r/rpl_loaddata.result
View File

@@ -22,7 +22,7 @@ day id category name
2003-03-22 2416 a bbbbb
show master status;
File Position Binlog_Do_DB Binlog_Ignore_DB
slave-bin.000001 1097
slave-bin.000001 1292
drop table t1;
drop table t2;
drop table t3;
@@ -33,7 +33,7 @@ set global sql_slave_skip_counter=1;
start slave;
show slave status;
Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master
# 127.0.0.1 root MASTER_PORT 1 master-bin.000001 1560 # # master-bin.000001 Yes Yes 0 0 1560 # None 0 No #
# 127.0.0.1 root MASTER_PORT 1 master-bin.000001 1800 # # master-bin.000001 Yes Yes 0 0 1800 # None 0 No #
set sql_log_bin=0;
delete from t1;
set sql_log_bin=1;
@@ -43,7 +43,7 @@ change master to master_user='test';
change master to master_user='root';
show slave status;
Slave_IO_State Master_Host Master_User Master_Port Connect_Retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_Do_DB Replicate_Ignore_DB Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master
# 127.0.0.1 root MASTER_PORT 1 master-bin.000001 1668 # # master-bin.000001 No No 0 0 1668 # None 0 No #
# 127.0.0.1 root MASTER_PORT 1 master-bin.000001 1835 # # master-bin.000001 No No 0 0 1835 # None 0 No #
set global sql_slave_skip_counter=1;
start slave;
set sql_log_bin=0;
@@ -64,5 +64,5 @@ terminated by ',' optionally enclosed by '%' escaped by '@' lines terminated by
ERROR 23000: Duplicate entry '2003-03-22' for key 1
show master status;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000001 537
master-bin.000001 441
drop table t2;