Wie setze ich AUTO_INCREMENT von einer anderen Tabelle

Question

Wie kann ich die AUTO_INCREMENT auf CREATE TABLE oder ALTER TABLE aus einer anderen Tabelle setzen?

fand ich diese Frage, aber mein Problem nicht gelöst: How to Reset an MySQL AutoIncrement using a MAX value from another table?

Ich habe auch versucht dies:

CREATE TABLE IF NOT EXISTS `table_name` (
    `id` mediumint(6) unsigned NOT NULL AUTO_INCREMENT, 
    `columnOne` tinyint(1) NOT NULL, 
    `columnTwo` int(12) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=(SELECT `AUTO_INCREMENT` FROM `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA` = 'database_name' AND `TABLE_NAME` = 'another_table_name'); 

dies:

ALTER TABLE `table_name` AUTO_INCREMENT=(SELECT `AUTO_INCREMENT` FROM `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA` = 'database_name' AND `TABLE_NAME` = 'another_table_name'); 

dies:

CREATE TABLE IF NOT EXISTS `table_name` (
    `id` mediumint(6) unsigned NOT NULL AUTO_INCREMENT, 
    `columnOne` tinyint(1) NOT NULL, 
    `columnTwo` int(12) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=(SELECT (MAX(`id`)+1) FROM `another_table_name`); 

und diese:

ALTER TABLE `table_name` AUTO_INCREMENT=(SELECT (MAX(`id`)+1) FROM `another_table_name`); 

Answer 1

Dieser Code Prozedur für Sie erstellen:

CREATE PROCEDURE `tbl_wth_ai`(IN `ai_to_start` INT) 
BEGIN 

SET @s=CONCAT('CREATE TABLE IF NOT EXISTS `table_name` (
    `id` mediumint(6) unsigned NOT NULL AUTO_INCREMENT, 
    `columnOne` tinyint(1) NOT NULL, 
    `columnTwo` int(12) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT = ', `ai_to_start`); 

    PREPARE stmt FROM @s; 
    EXECUTE stmt; 
    DEALLOCATE PREPARE stmt; 
END; 

Dann können Sie CALL tbl_wth_ai(2); Passieren der Parameter in den Klammern bezeichnen.

Zum Beispiel:

CALL tbl_wth_ai((SELECT id FROM `ttest` WHERE c1='b')); 

Answer 2

Dies funktioniert:

DELIMITER $$ 
CREATE PROCEDURE `tbl_wth_ai`(IN `ai_to_start` INT) 
BEGIN 

SET @s=CONCAT('CREATE TABLE IF NOT EXISTS `table_name` (
    `id` mediumint(6) unsigned NOT NULL AUTO_INCREMENT, 
    `columnOne` tinyint(1) NOT NULL, 
    `columnTwo` int(12) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT = ', `ai_to_start`); 

    PREPARE stmt FROM @s; 
    EXECUTE stmt; 
    DEALLOCATE PREPARE stmt; 
END $$ 
DELIMITER ; 

CALL tbl_wth_ai((SELECT MAX(`id`)+1 FROM `another_table_name`)); 
DROP PROCEDURE IF EXISTS tbl_wth_ai; 

Answer 3

SELECT `AUTO_INCREMENT` INTO @AutoInc 
FROM INFORMATION_SCHEMA.TABLES 
WHERE TABLE_SCHEMA = 'my_db' AND TABLE_NAME = 'old_table'; 

SET @s:=CONCAT('ALTER TABLE `my_db`.`new_table` AUTO_INCREMENT=', @AutoInc); 
PREPARE stmt FROM @s; 
EXECUTE stmt; 
DEALLOCATE PREPARE stmt;