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BUG#11758263 50440: MARK UNORDERED UPDATE WITH AUTOINC UNSAFE

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Problem: Statements that write to tables with auto_increment columns
         based on the selection from another table, may lead to master
         and slave going out of sync, as the order in which the rows
         are retrieved from the table may differ on master and slave.
            
Solution: We mark writing to a table with auto_increment table
          based on the rows selected from another table as unsafe. This
          will cause the execution of such statements to throw a warning
          and forces the statement to be logged in ROW if the logging
          format is mixed. 
            
Changes:
       1. All the statements that writes to a table with auto_increment 
          column(s) based on the rows fetched from another table, will now
          be unsafe.
       2. CREATE TABLE with SELECT will now be unsafe.
This commit is contained in:
Rohit Kalhans
2012-02-09 23:28:33 +05:30
parent 9153fddf58
commit 4f7e4c9d1b
28 changed files with 186 additions and 23 deletions
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15
sql/sql_lex.h
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@ -1268,6 +1268,13 @@ public:
*/
BINLOG_STMT_UNSAFE_INSERT_SELECT_UPDATE,
/**
Query that writes to a table with auto_inc column after selecting from
other tables are unsafe as the order in which the rows are retrieved by
select may differ on master and slave.
*/
BINLOG_STMT_UNSAFE_WRITE_AUTOINC_SELECT,
/**
INSERT...REPLACE SELECT is unsafe because which rows are replaced depends
on the order that rows are retrieved by SELECT. This order cannot be
@ -1289,6 +1296,14 @@ public:
*/
BINLOG_STMT_UNSAFE_CREATE_REPLACE_SELECT,
/**
CREATE TABLE...SELECT on a table with auto-increment column is unsafe
because which rows are replaced depends on the order that rows are
retrieved from SELECT. This order cannot be predicted and may differ on
master and the slave
*/
BINLOG_STMT_UNSAFE_CREATE_SELECT_AUTOINC,
/**
UPDATE...IGNORE is unsafe because which rows are ignored depends on the
order that rows are updated. This order cannot be predicted and may differ