Question

This has me seriously stumped. I have a MySQL stored procedure that looks like this.

 DELIMITER $$

CREATE PROCEDURE `lms`.`leads_to_bak` ()
BEGIN
SET @table1 = (SELECT `tabler_name` FROM `sets` WHERE `on_off`=0 LIMIT 1);
SET @table2 = CONCAT(@table1, '_bak');
SET @SQL1 = CONCAT('INSERT INTO ',@table2, '(', (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), 'lead_id,', '') FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @table2), ')', ' SELECT ', (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), 'lead_id,', '') FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @table1), ' FROM ', @table1);
PREPARE stmt FROM @sql1;
EXECUTE stmt;
END$$

DELIMITER ;

Now the part that is important is this:

SET @SQL1 = CONCAT('INSERT INTO ',@table2, '(', (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), 'lead_id,', '') FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @table2), ')', ' SELECT ', (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), 'lead_id,', '') FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @table1), ' FROM ', @table1);

Now from the looks of it, the statement can be translated to

INSERT INTO @table2 (col1, col2, col3, ...)[minus lead_id] SELECT (col1, col2, col3, ...)[minus lead_id] FROM @table1

Pretty simple right? Well I am trying to attach a WHERE clause at the end the end of that there INSERT statement to make it look something like this:

INSERT INTO @table2 (col1, col2, col3, ...) SELECT (col1, col2, col3, ...) FROM @table1 WHERE set_id = (SELECT set_id FROM sets WHERE on_off = 0);

But no dice. Errors galore. Heck I even tried:

INSERT INTO (col1, col2, col3, ...) SELECT (col1, col2, col3, ...) FROM @table1 WHERE set_id = 1;

The string output is:

INSERT INTO leads_auto_bak(set_id,new_old,upload_date,agent,vendors,callcenter,generation_date,first_name,last_name,email,phone,address,city,state,zip,dob,gender,marital_status,rented,year,make,model,trim,vin,primary_use,miles_oneway,mileage,license_num,license_state,education,job_title,license_status) SELECT set_id,new_old,upload_date,agent,vendors,callcenter,generation_date,first_name,last_name,email,phone,address,city,state,zip,dob,gender,marital_status,rented,year,make,model,trim,vin,primary_use,miles_oneway,mileage,license_num,license_state,education,job_title,license_status FROM leads_auto


But still nothing. I played around with the different ways to CONCAT that line at the end but it wont budge. Anyone got some advise?

Answer 1

You are missing a table name to insert into:

INSERT INTO MYTABLE (col1, col2, col3) 
SELECT col1, col2, col3
FROM @table1 
WHERE ...

Also, notice there should be no brackets around the columns in your SELECT clause.