Forked from carlosrobles/add_auto_increment_to_int_single_pk.sql
Created
January 11, 2019 20:39
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Add auto_increment to all the single PRIMARY KEY of type int of a database
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| DROP TABLE if exists temp; | |
| CREATE TABLE temp ( | |
| `table` varchar(250) DEFAULT NULL, | |
| `colum` varchar(250) DEFAULT NULL, | |
| `type` varchar(250) DEFAULT NULL, | |
| `number_of_PK` tinyint(2) DEFAULT NULL, | |
| `alter` varchar(250) DEFAULT NULL | |
| ) ENGINE=InnoDB DEFAULT CHARSET=latin1; | |
| DROP PROCEDURE IF EXISTS foo; | |
| DELIMITER // | |
| CREATE PROCEDURE foo() | |
| BEGIN | |
| declare tableName varchar(250); | |
| declare done int default 0; | |
| declare totalKeys int default 0; | |
| declare columnName varchar(250); | |
| declare columnType varchar(250); | |
| #select all the #tables but exclude the ones generated by AED DMS | |
| declare cur1 cursor for SELECT Distinct(TABLE_NAME) FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME not LIKE "awsdms_%"; | |
| declare continue handler for not found set done=1; | |
| open cur1; | |
| igmLoop: loop | |
| fetch cur1 into tableName; | |
| set @cnt = 0; | |
| #SElECT all the tables-colum-datatype | |
| SELECT `total`,`column_name_`, `data_type_` into totalKeys, columnName, columnType FROM ( | |
| SELECT MAX(rowNumber) as total, `column_type_`, `data_type_` , `column_name_` FROM ( | |
| SELECT (@cnt := @cnt + 1) AS rowNumber, `column_name_`, `column_type_`, `data_type_` FROM ( | |
| SELECT | |
| c.COLUMN_NAME as `column_name_`, cls.COLUMN_TYPE as `column_type_`, DATA_TYPE as `data_type_` | |
| FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS p | |
| JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE c | |
| ON c.TABLE_NAME = p.TABLE_NAME | |
| AND c.CONSTRAINT_NAME = p.CONSTRAINT_NAME | |
| JOIN INFORMATION_SCHEMA.COLUMNS cls | |
| ON c.TABLE_NAME = cls.TABLE_NAME | |
| AND c.COLUMN_NAME = cls.COLUMN_NAME | |
| WHERE CONSTRAINT_TYPE = 'PRIMARY KEY' | |
| AND c.TABLE_NAME = tableName | |
| group by c.COLUMN_NAME | |
| ) a | |
| ) b | |
| ) c; | |
| SET @t1 = CONCAT("ALTER table ", tableName," modify ", columnName," ", columnType," NOT NULL AUTO_INCREMENT"); | |
| #log it | |
| insert into temp values (tableName, columnName, columnType, totalKeys, @t1 ); | |
| if totalKeys = 1 and columnType like "%int%" then | |
| #update the row | |
| PREPARE stmt3 FROM @t1; | |
| EXECUTE stmt3; | |
| end if; | |
| if done = 1 then leave igmLoop; end if; | |
| end loop igmLoop; | |
| close cur1; | |
| END // | |
| DELIMITER ; | |
| call foo(); |
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