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81 lines
3.3 KiB
SQL
81 lines
3.3 KiB
SQL
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; version 2 of the License.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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DROP FUNCTION IF EXISTS format_statement;
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DELIMITER $$
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CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_statement (
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statement LONGTEXT
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)
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RETURNS LONGTEXT
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COMMENT '
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Description
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-----------
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Formats a normalized statement, truncating it if it is > 64 characters long by default.
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To configure the length to truncate the statement to by default, update the `statement_truncate_len`
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variable with `sys_config` table to a different value. Alternatively, to change it just for just
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your particular session, use `SET @sys.statement_truncate_len := <some new value>`.
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Useful for printing statement related data from Performance Schema from
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the command line.
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Parameters
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-----------
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statement (LONGTEXT):
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The statement to format.
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Returns
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-----------
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LONGTEXT
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Example
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-----------
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mysql> SELECT sys.format_statement(digest_text)
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-> FROM performance_schema.events_statements_summary_by_digest
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-> ORDER by sum_timer_wait DESC limit 5;
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+-------------------------------------------------------------------+
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| sys.format_statement(digest_text) |
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+-------------------------------------------------------------------+
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| CREATE SQL SECURITY INVOKER VI ... KE ? AND `variable_value` > ? |
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| CREATE SQL SECURITY INVOKER VI ... ait` IS NOT NULL , `esc` . ... |
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| CREATE SQL SECURITY INVOKER VI ... ait` IS NOT NULL , `sys` . ... |
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| CREATE SQL SECURITY INVOKER VI ... , `compressed_size` ) ) DESC |
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| CREATE SQL SECURITY INVOKER VI ... LIKE ? ORDER BY `timer_start` |
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+-------------------------------------------------------------------+
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5 rows in set (0.00 sec)
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'
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SQL SECURITY INVOKER
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DETERMINISTIC
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NO SQL
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BEGIN
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-- Check if we have the configured length, if not, init it
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IF @sys.statement_truncate_len IS NULL THEN
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SET @sys.statement_truncate_len = sys_get_config('statement_truncate_len', 64);
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END IF;
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IF CHAR_LENGTH(statement) > @sys.statement_truncate_len THEN
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RETURN REPLACE(CONCAT(LEFT(statement, (@sys.statement_truncate_len/2)-2), ' ... ', RIGHT(statement, (@sys.statement_truncate_len/2)-2)), '\n', ' ');
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ELSE
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RETURN REPLACE(statement, '\n', ' ');
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END IF;
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END$$
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DELIMITER ;
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