Better handling of ensuring that setup_tables() are not called twice

This fixed a bug in prepared statements when used with outher joins
Fixed a bug in SUM(DISTINCT) when used with prepared statements.
Some safety fixes in test scripts to ensure that previous test failures shouldn't affect other tests


mysql-test/r/mysqldump.result:
  Safety fix if a previous test would fail
mysql-test/r/show_check.result:
  Safety fix if a previous test would fail
mysql-test/r/sp.result:
  Fix for --ps-protocol
mysql-test/r/synchronization.result:
  Safety fix if a previous test would fail
mysql-test/r/system_mysql_db.result:
  Safety fix if a previous test would fail
mysql-test/t/mysqldump.test:
  Safety fix if a previous test would fail
mysql-test/t/select.test:
  Safety fix if a previous test would fail
mysql-test/t/show_check.test:
  Safety fix if a previous test would fail
mysql-test/t/sp.test:
  fix for --ps-protocol
mysql-test/t/strict.test:
  Fix for --ps-protocol
mysql-test/t/synchronization.test:
  Safety fix if a previous test would fail
mysql-test/t/system_mysql_db.test:
  Safety fix if a previous test would fail
sql/item_sum.cc:
  Fix bug in SUM(DISTINCT...) when using with prepared statements
sql/item_sum.h:
  Fix bug in SUM(DISTINCT...) when using with prepared statements
sql/mysql_priv.h:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_base.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_insert.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_parse.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_prepare.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_select.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_union.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/sql_update.cc:
  Better handling of ensuring that setup_tables() are not called twice
sql/table.h:
  Better handling of ensuring that setup_tables() are not called twice

mysql-test/r/mysqldump.result

@@ -1,4 +1,4 @@
-DROP TABLE IF EXISTS t1, `"t"1`;
+DROP TABLE IF EXISTS t1, `"t"1`, t1aa,t2aa;
 drop database if exists mysqldump_test_db;
 CREATE TABLE t1(a int);
 INSERT INTO t1 VALUES (1), (2);

mysql-test/r/show_check.result

@@ -1,4 +1,5 @@
 drop table if exists t1,t2;
+drop table if exists t1aa,t2aa;
 drop database if exists mysqltest;
 delete from mysql.user where user='mysqltest_1' || user='mysqltest_2' || user='mysqltest_3';
 delete from mysql.db where user='mysqltest_1' || user='mysqltest_2' || user='mysqltest_3';

mysql-test/r/sp.result

@@ -1639,12 +1639,9 @@ yz,yz
 drop procedure bug3368|
 drop table t3|
 drop table if exists t3|
-create table t3 (f1 int, f2 int);
-insert into t3 values (1,1);
---disable_warnings|
+create table t3 (f1 int, f2 int)|
+insert into t3 values (1,1)|
 drop procedure if exists bug4579_1|
-Warnings:
-Note	1305	PROCEDURE bug4579_1 does not exist
 create procedure bug4579_1 ()
 begin
 declare sf1 int;

mysql-test/r/synchronization.result

@@ -1,3 +1,4 @@
+drop table if exists t1;
 CREATE TABLE t1 (x1 int);
  ALTER TABLE t1 CHANGE x1 x2 int;
 CREATE TABLE t2 LIKE t1;

mysql-test/r/system_mysql_db.result

@@ -1,3 +1,4 @@
+drop table if exists t1,t1aa,t2aa;
 show tables;
 Tables_in_db
 columns_priv

mysql-test/t/mysqldump.test

@@ -1,5 +1,5 @@
 --disable_warnings
-DROP TABLE IF EXISTS t1, `"t"1`;
+DROP TABLE IF EXISTS t1, `"t"1`, t1aa,t2aa;
 drop database if exists mysqldump_test_db;
 --enable_warnings
 

mysql-test/t/select.test

@@ -9,7 +9,7 @@
 --disable_warnings
 drop table if exists t1,t2,t3,t4;
 # The following may be left from older tests
-drop table if exists t1_1,t1_2,t9_1,t9_2;
+drop table if exists t1_1,t1_2,t9_1,t9_2,t1aa,t2aa;
 drop view if exists v1;
 --enable_warnings
 

mysql-test/t/show_check.test

@@ -4,6 +4,7 @@
 
 --disable_warnings
 drop table if exists t1,t2;
+drop table if exists t1aa,t2aa;
 drop database if exists mysqltest;
 
 delete from mysql.user where user='mysqltest_1' || user='mysqltest_2' || user='mysqltest_3';

mysql-test/t/sp.test

@@ -945,10 +945,12 @@ insert into t2 values (append("xxx", "yyy"), mul(4,3), e())|
 insert into t2 values (append("a", "b"), mul(2,mul(3,4)), fun(1.7, 4, 6))|
 
 # These don't work yet.
+--disable_ps_protocol
 select * from t2 where s = append("a", "b")|
 select * from t2 where i = mul(4,3) or i = mul(mul(3,4),2)|
 select * from t2 where d = e()|
 select * from t2|
+--enable_ps_protocol
 delete from t2|
 
 drop function e|
@@ -1263,8 +1265,10 @@ end|
 
 call rc()|
 select row_count()|
+--disable_ps_protocol
 update t1 set data=42 where id = "b";
 select row_count()|
+--enable_ps_protocol
 delete from t1|
 select row_count()|
 delete from t1|
@@ -2022,8 +2026,8 @@ drop table t3|
 --disable_warnings
 drop table if exists t3|
 --enable_warnings
-create table t3 (f1 int, f2 int);
-insert into t3 values (1,1);
+create table t3 (f1 int, f2 int)|
+insert into t3 values (1,1)|
 
 --disable_warnings
 drop procedure if exists bug4579_1|

mysql-test/t/strict.test

@@ -557,7 +557,7 @@ INSERT IGNORE INTO t1 (col1) values (1/0);
 INSERT IGNORE INTO t1 VALUES (+1.9E+309,-1.9E+309);
 INSERT IGNORE INTO t1 VALUES ('+2.0E+309','-2.0E+309');
 # stupid...
---replace_result -0 0
+--replace_result -0 0 1.7976931348623e+308 1.79769313486232e+308
 SELECT * FROM t1;
 DROP TABLE t1;
 

mysql-test/t/synchronization.test

@@ -1,7 +1,12 @@
 #
-# Test for Bug #2385 CREATE TABLE LIKE lacks locking on source and destination table
+# Test for Bug #2385 CREATE TABLE LIKE lacks locking on source and destination
+# table
 #
 
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
 connect (con1,localhost,root,,);
 connect (con2,localhost,root,,);
 

mysql-test/t/system_mysql_db.test

@@ -2,6 +2,11 @@
 # This test must examine integrity of system database "mysql"
 #
 
+# First delete some tables maybe left over from previous tests
+--disable_warnings
+drop table if exists t1,t1aa,t2aa;
+--enable_warnings
+
 -- disable_query_log
 use mysql;
 -- enable_query_log