Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/scripts/sys_schema/procedures/execute_prepared_stmt.sql b/scripts/sys_schema/procedures/execute_prepared_stmt.sql
new file mode 100644
index 00000000..8e975b90
--- /dev/null
+++ b/scripts/sys_schema/procedures/execute_prepared_stmt.sql
@@ -0,0 +1,89 @@
+--  Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+-- 
+--  This program is free software; you can redistribute it and/or modify
+--  it under the terms of the GNU General Public License as published by
+--  the Free Software Foundation; version 2 of the License.
+-- 
+--  This program is distributed in the hope that it will be useful,
+--  but WITHOUT ANY WARRANTY; without even the implied warranty of
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--  GNU General Public License for more details.
+-- 
+--  You should have received a copy of the GNU General Public License
+--  along with this program; if not, write to the Free Software
+--  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 
+
+DROP PROCEDURE IF EXISTS execute_prepared_stmt;
+
+DELIMITER $$
+
+CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE execute_prepared_stmt (
+        IN in_query longtext CHARACTER SET UTF8
+    )
+    COMMENT '
+             Description
+             -----------
+
+             Takes the query in the argument and executes it using a prepared statement. The prepared statement is deallocated,
+             so the procedure is mainly useful for executing one off dynamically created queries.
+
+             The sys_execute_prepared_stmt prepared statement name is used for the query and is required not to exist.
+
+
+             Parameters
+             -----------
+
+             in_query (longtext CHARACTER SET UTF8):
+               The query to execute.
+
+
+             Configuration Options
+             ----------------------
+
+             sys.debug
+               Whether to provide debugging output.
+               Default is ''OFF''. Set to ''ON'' to include.
+
+
+             Example
+             --------
+
+             mysql> CALL sys.execute_prepared_stmt(''SELECT * FROM sys.sys_config'');
+             +------------------------+-------+---------------------+--------+
+             | variable               | value | set_time            | set_by |
+             +------------------------+-------+---------------------+--------+
+             | statement_truncate_len | 64    | 2015-06-30 13:06:00 | NULL   |
+             +------------------------+-------+---------------------+--------+
+             1 row in set (0.00 sec)
+
+             Query OK, 0 rows affected (0.00 sec)
+            '
+    SQL SECURITY INVOKER
+    NOT DETERMINISTIC
+    READS SQL DATA
+BEGIN
+    -- Set configuration options
+    IF (@sys.debug IS NULL) THEN
+        SET @sys.debug = sys.sys_get_config('debug', 'OFF');
+    END IF;
+
+    -- Verify the query exists
+    -- The shortest possible query is "DO 1"
+    IF (in_query IS NULL OR LENGTH(in_query) < 4) THEN
+       SIGNAL SQLSTATE '45000'
+          SET MESSAGE_TEXT = "The @sys.execute_prepared_stmt.sql must contain a query";
+    END IF;
+
+    SET @sys.execute_prepared_stmt.sql = in_query;
+
+    IF (@sys.debug = 'ON') THEN
+        SELECT @sys.execute_prepared_stmt.sql AS 'Debug';
+    END IF;
+    PREPARE sys_execute_prepared_stmt FROM @sys.execute_prepared_stmt.sql;
+    EXECUTE sys_execute_prepared_stmt;
+    DEALLOCATE PREPARE sys_execute_prepared_stmt;
+
+    SET @sys.execute_prepared_stmt.sql = NULL;
+END$$
+
+DELIMITER ;