Manual merge of mysql-5.1-bugteam to mysql-trunk-merge.

Conflicts:

   conflict      Makefile.am
   conflict      mysql-test/suite/rpl/r/rpl_stm_mixing_engines.result
   conflict      mysql-test/suite/rpl/t/rpl_tmp_table_and_DDL.test
   conflict      sql/opt_sum.cc
   conflict      sql/set_var.cc
   conflict      sql/sql_base.cc
   conflict      sql/sql_priv.h
   conflict      sql/sql_show.cc

1 files changed, 38 insertions, 0 deletions

diff --git a/mysql-test/t/log_state.test b/mysql-test/t/log_state.test
index 4d8c8fc6e74..d47044fbbee 100644
--- a/mysql-test/t/log_state.test
+++ b/mysql-test/t/log_state.test
@@ -313,6 +313,42 @@ SET @@global.general_log_file = @old_general_log_file;
 SET @@global.slow_query_log = @old_slow_query_log;
 SET @@global.slow_query_log_file = @old_slow_query_log_file;
 
+###########################################################################
+
+--echo #
+--echo # Bug #49756 Rows_examined is always 0 in the slow query log 
+--echo # for update statements
+--echo #
+
+SET @old_log_output = @@global.log_output;
+SET GLOBAL log_output = "TABLE";
+SET GLOBAL slow_query_log = ON;
+SET GLOBAL long_query_time = 0.001;
+
+# clear slow_log of any residual slow queries
+TRUNCATE TABLE mysql.slow_log;
+CREATE TABLE t1 (a INT);
+CREATE TABLE t2 (b INT, PRIMARY KEY (b));
+INSERT INTO t2 VALUES (3),(4);
+
+connect (con2,localhost,root,,);
+INSERT INTO t1 VALUES (1+sleep(.01)),(2);
+INSERT INTO t1 SELECT b+sleep(.01) from t2;
+UPDATE t1 SET a=a+sleep(.01) WHERE a>2;
+UPDATE t1 SET a=a+sleep(.01) ORDER BY a DESC;
+UPDATE t2 set b=b+sleep(.01) limit 1;
+UPDATE t1 SET a=a+sleep(.01) WHERE a in (SELECT b from t2);
+DELETE FROM t1 WHERE a=a+sleep(.01) ORDER BY a LIMIT 2;
+
+SELECT rows_examined,sql_text FROM mysql.slow_log;
+disconnect con2;
+connection default;
+DROP TABLE t1,t2;
+TRUNCATE TABLE mysql.slow_log;
+
+--echo # end of bug#49756
+
+
 --echo End of 5.1 tests
 
 
@@ -361,6 +397,8 @@ disconnect con1;
 connection default;
 
 # Reset global system variables to initial values if forgotten somewhere above.
+SET GLOBAL long_query_time = DEFAULT;
+SET GLOBAL log_output = @old_log_output;
 SET global general_log = @old_general_log;
 SET global general_log_file = @old_general_log_file;
 SET global slow_query_log = @old_slow_query_log;