BUG#11765650 - 58637: MARK UPDATES THAT DEPEND ON ORDER OF TWO KEYS UNSAFE

Description: When the table has more than one unique or primary key, 
 INSERT... ON DUP KEY UPDATE statement is sensitive to the order in which
 the storage engines checks the keys. Depending on this order, the storage
 engine may determine different rows to mysql, and hence mysql can update
 different rows on master and slave.
      
 Solution: We mark INSERT...ON DUP KEY UPDATE on a table with more than on unique
 key as unsafe therefore the event will be logged in row format if it is available
 (ROW/MIXED). If only STATEMENT format is available, a warning will be thrown. 

mysql-test/suite/binlog/r/binlog_unsafe.result:
  Updated result file
mysql-test/suite/binlog/t/binlog_unsafe.test:
  Added test to check  for warning being thrown when the unsafe statement is executed
mysql-test/suite/rpl/r/rpl_known_bugs_detection.result:
  Updated result file
sql/share/errmsg-utf8.txt:
  Added new warning message
sql/sql_base.cc:
  check for tables in the query with more than one UNIQUE KEY and INSERT ON DUPLICATE KEY UPDATE, and mark such statements unsafe.

mysql-test/suite/binlog/r/binlog_unsafe.result

@@ -2679,6 +2679,8 @@ CREATE TABLE replace_table (a INT, b INT, PRIMARY KEY(a));
 INSERT INTO replace_table values (1,1),(2,2);
 CREATE TABLE update_table (a INT, b INT, PRIMARY KEY(a));
 INSERT INTO update_table values (1,1),(2,2);
+CREATE TABLE insert_2_keys (a INT UNIQUE KEY, b INT UNIQUE KEY) ENGINE = InnoDB;
+INSERT INTO insert_2_keys values (1, 1);
 INSERT IGNORE INTO insert_table SELECT * FROM filler_table;
 Warnings:
 Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. INSERT IGNORE... SELECT is unsafe because the order in which rows are retrieved by the SELECT determines which (if any) rows are ignored. This order cannot be predicted and may differ on master and the slave.
@@ -2702,10 +2704,15 @@ Note	1592	Unsafe statement written to the binary log using statement format sinc
 CREATE TEMPORARY TABLE temp1 (a INT, b INT, PRIMARY KEY(b)) REPLACE SELECT * FROM filler_table;
 Warnings:
 Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. CREATE... REPLACE SELECT is unsafe because the order in which rows are retrieved by the SELECT determines which (if any) rows are replaced. This order cannot be predicted and may differ on master and the slave.
+INSERT INTO insert_2_keys VALUES (1, 2) 
+ON DUPLICATE KEY UPDATE a=VALUES(a)+10, b=VALUES(b)+10;
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. INSERT... ON DUPLICATE KEY UPDATE  on a table with more than one UNIQUE KEY is unsafe
 DROP TABLE filler_table;
 DROP TABLE insert_table;
 DROP TABLE update_table;
 DROP TABLE replace_table;
 DROP TABLE create_ignore_test;
 DROP TABLE create_replace_test;
+DROP TABLE insert_2_keys;
 "End of tests"

mysql-test/suite/binlog/t/binlog_unsafe.test

@@ -17,6 +17,7 @@
 #  - CREATE TABLE [IGNORE/REPLACE] SELECT
 #  - INSERT IGNORE...SELECT
 #  - UPDATE IGNORE
+#  - INSERT... ON DUPLICATE KEY UPDATE on a table with two UNIQUE KEYS
 #
 # Note that statements that use stored functions, stored procedures,
 # triggers, views, or prepared statements that invoke unsafe
@@ -714,6 +715,9 @@ DROP TABLE t1;
 #UPDATE IGNORE 
 #CREATE TABLE... IGNORE SELECT 
 #CREATE TABLE... REPLACE SELECT
+#
+###BUG 11765650 - 58637: MARK UPDATES THAT DEPEND ON ORDER OF TWO KEYS UNSAFE 
+#INSERT.... ON DUP KEY UPDATE on a table with more than one UNIQUE KEY
 
 #setup tables
 CREATE TABLE filler_table (a INT, b INT);
@@ -723,6 +727,8 @@ CREATE TABLE replace_table (a INT, b INT, PRIMARY KEY(a));
 INSERT INTO replace_table values (1,1),(2,2);
 CREATE TABLE update_table (a INT, b INT, PRIMARY KEY(a));
 INSERT INTO update_table values (1,1),(2,2);
+CREATE TABLE insert_2_keys (a INT UNIQUE KEY, b INT UNIQUE KEY) ENGINE = InnoDB;
+INSERT INTO insert_2_keys values (1, 1);
 
 #INSERT IGNORE... SELECT
 INSERT IGNORE INTO insert_table SELECT * FROM filler_table;
@@ -740,6 +746,10 @@ CREATE TABLE create_replace_test (a INT, b INT, PRIMARY KEY(b)) REPLACE SELECT *
 #temporary tables should not throw the warning.
 CREATE TEMPORARY TABLE temp1 (a INT, b INT, PRIMARY KEY(b)) REPLACE SELECT * FROM filler_table;
 
+#INSERT.... ON DUP KEY UPDATE on a table with more than one UNIQUE KEY
+INSERT INTO insert_2_keys VALUES (1, 2) 
+       ON DUPLICATE KEY UPDATE a=VALUES(a)+10, b=VALUES(b)+10;
+
 ###clean up
 DROP TABLE filler_table;
 DROP TABLE insert_table;
@@ -747,5 +757,6 @@ DROP TABLE update_table;
 DROP TABLE replace_table;
 DROP TABLE create_ignore_test;
 DROP TABLE create_replace_test;
+DROP TABLE insert_2_keys;
 
 --echo "End of tests"

mysql-test/suite/rpl/r/rpl_known_bugs_detection.result

@@ -4,6 +4,8 @@ call mtr.add_suppression("Unsafe statement written to the binary log using state
 CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b INT,
 UNIQUE(b));
 INSERT INTO t1(b) VALUES(1),(1),(2) ON DUPLICATE KEY UPDATE t1.b=10;
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. INSERT... ON DUPLICATE KEY UPDATE  on a table with more than one UNIQUE KEY is unsafe
 SELECT * FROM t1;
 a	b
 1	10

sql/share/errmsg-utf8.txt

@@ -6494,6 +6494,9 @@ ER_BINLOG_UNSAFE_WRITE_AUTOINC_SELECT
 ER_BINLOG_UNSAFE_CREATE_SELECT_AUTOINC
   eng "CREATE TABLE... SELECT...  on a table with an auto-increment column is unsafe because the order in which rows are retrieved by the SELECT determines which (if any) rows are inserted. This order cannot be predicted and may differ on master and the slave."
 
+ER_BINLOG_UNSAFE_INSERT_TWO_KEYS
+  eng "INSERT... ON DUPLICATE KEY UPDATE  on a table with more than one UNIQUE KEY is unsafe"
+
 #
 #  End of 5.5 error messages.
 #

sql/sql_base.cc

@@ -5691,6 +5691,30 @@ bool lock_tables(THD *thd, TABLE_LIST *tables, uint count,
         has_write_table_with_auto_increment_and_select(tables))
       thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_WRITE_AUTOINC_SELECT);
 
+    /* 
+     INSERT...ON DUPLICATE KEY UPDATE on a table with more than one unique keys
+     can be unsafe.
+     */
+    uint unique_keys= 0;
+    for (TABLE_LIST *query_table= tables; query_table && unique_keys <= 1;
+         query_table= query_table->next_global)
+      if(query_table->table)
+      {
+        uint keys= query_table->table->s->keys, i= 0;
+        unique_keys= 0;
+        for (KEY* keyinfo= query_table->table->s->key_info;
+             i < keys && unique_keys <= 1; i++, keyinfo++)
+        {
+          if (keyinfo->flags & HA_NOSAME)
+            unique_keys++;
+        }
+        if (!query_table->placeholder() &&
+            query_table->lock_type >= TL_WRITE_ALLOW_WRITE &&
+            unique_keys > 1 && thd->lex->sql_command == SQLCOM_INSERT &&
+            thd->lex->duplicates == DUP_UPDATE)
+          thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_INSERT_TWO_KEYS);
+      }
+ 
     /* We have to emulate LOCK TABLES if we are statement needs prelocking. */
     if (thd->lex->requires_prelocking())
     {

sql/sql_lex.cc

@@ -66,7 +66,8 @@ Query_tables_list::binlog_stmt_unsafe_errcode[BINLOG_STMT_UNSAFE_COUNT] =
   ER_BINLOG_UNSAFE_CREATE_IGNORE_SELECT,
   ER_BINLOG_UNSAFE_CREATE_REPLACE_SELECT,
   ER_BINLOG_UNSAFE_CREATE_SELECT_AUTOINC,
-  ER_BINLOG_UNSAFE_UPDATE_IGNORE
+  ER_BINLOG_UNSAFE_UPDATE_IGNORE,
+  ER_BINLOG_UNSAFE_INSERT_TWO_KEYS
 };
 
 

sql/sql_lex.h

@@ -1323,6 +1323,12 @@ public:
     */
     BINLOG_STMT_UNSAFE_UPDATE_IGNORE,
 
+    /**
+      INSERT... ON DUPLICATE KEY UPDATE on a table with more than one
+      UNIQUE KEYS  is unsafe.
+    */
+    BINLOG_STMT_UNSAFE_INSERT_TWO_KEYS,
+
     /* The last element of this enumeration type. */
     BINLOG_STMT_UNSAFE_COUNT
   };