Making DROP TABLE IF EXISTS, DROP DATABASE IF EXISTS, DELETE FROM, UPDATE be logged to

binlog even if they changed nothing, and a test for this.
This is useful when users use these commands to clean up their master and slave by issuing
one command on master (assume master and slave have slightly different data for some
reason and you want to clean up both).
Note that I have not changed multi-table DELETE and multi-table UPDATE because their
error-reporting mechanism is more complicated.


mysql-test/r/mysqlbinlog.result:
  result update
mysql-test/r/rpl_charset.result:
  result update
mysql-test/r/rpl_flush_log_loop.result:
  result update
mysql-test/r/rpl_replicate_do.result:
  result update
mysql-test/r/rpl_temporary.result:
  result update
mysql-test/t/mysqlbinlog.test:
  moving SET TIMESTAMP up as DROP shows up in binlog
sql/sql_db.cc:
  DROP DATABASE IF EXISTS is now always logged to binlog, even if db did not exist
sql/sql_delete.cc:
  DELETE FROM t is now always logged to binlog even if no rows deleted (but in this case, only if really no error).
sql/sql_table.cc:
  DROP TABLE IF EXISTS is now always logged to binlog even if table did not exist
sql/sql_update.cc:
  UPDATE is now always logged to binlog even if no rows updated (but in this case, only if really no error).

1 files changed, 5 insertions, 1 deletions

diff --git a/mysql-test/r/mysqlbinlog.result b/mysql-test/r/mysqlbinlog.result
index 5592524cc39..e88ece6b361 100644
--- a/mysql-test/r/mysqlbinlog.result
+++ b/mysql-test/r/mysqlbinlog.result
@@ -1,5 +1,5 @@
-drop table if exists t1,t2;
 set timestamp=1000000000;
+drop table if exists t1,t2;
 create table t1 (word varchar(20));
 create table t2 (id int auto_increment not null primary key);
 insert into t1 values ("abirvalg");
@@ -17,6 +17,8 @@ flush logs;
 /*!40019 SET @@session.max_insert_delayed_threads=0*/;
 use test;
 SET TIMESTAMP=1000000000;
+drop table if exists t1,t2;
+SET TIMESTAMP=1000000000;
 create table t1 (word varchar(20));
 SET TIMESTAMP=1000000000;
 create table t2 (id int auto_increment not null primary key);
@@ -51,6 +53,8 @@ insert into t1 values ("Alas");
 /*!40019 SET @@session.max_insert_delayed_threads=0*/;
 use test;
 SET TIMESTAMP=1000000000;
+drop table if exists t1,t2;
+SET TIMESTAMP=1000000000;
 create table t1 (word varchar(20));
 SET TIMESTAMP=1000000000;
 create table t2 (id int auto_increment not null primary key);