How to create a create table statement in a loop in mysql - mysql

Question

I want to create multiple tables with just one statement (query).
Loop
start
(
create table a
)
a =a +1
end loop
So say it has to create 100 tables labeled as TABLE1, TABLE2, ...

Answer 1

Try the following procedure.
DROP PROCEDURE IF EXISTS `createTableProcTest`;
delimiter //
CREATE PROCEDURE `createTableProcTest`()
BEGIN
DECLARE count INT Default 0;
simple_loop: LOOP
SET #a := count + 1;
SET #statement = CONCAT('Create table Table',#a,' ( name VARCHAR(70), age int );');
PREPARE stmt FROM #statement;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
SET count = count + 1;
IF count=100 THEN
LEAVE simple_loop;
END IF;
END LOOP simple_loop;
END//
In order to execute just do the following:
Call createTableProcTest();
By executing the above procedure 100 tables will be created having name table1,...,table100.
And the table structure would look like following:
N:B: Procedure execution might take several seconds. Don't be impatient.

Answer 2

You need give us more details but, I think is easier to call a stored procedure, inside the loop, to create the procedure.
You need to create a procedure to create the tables you need and call this procedure inside the loop.
Ex:
CREATE PROCEDURE SP_Create_Table(IN tableName VARCHAR(50)) BEGIN SET
#sql = CONCAT('CREATE TABLE ', tableName, '(column1 INT(11))');
PREPARE stmt FROM #sql; EXECUTE stmt; DEALLOCATE PREPARE stmt; END
Now, call the create table procedure inside the loop
DELIMITER // CREATE FUNCTION CalcIncome ( starting_value INT ) RETURNS
INT BEGIN
DECLARE income INT; SET income = 0; label1: WHILE income <=
50 DO
call SP_Create_Table(CONVERT(VARCHAR(50),starting_value)); END WHILE label1; RETURN income; END; // DELIMITER;