Hi All,
 I would like to automate this process, should run automatically and the result set(s) Can I do this? If yes, then how?


 CREATE TABLE student_id_new LIKE student_id;
 ALTER TABLE student_id RENAME student_id_old;

 INSERT INTO student_id_new SELECT * FROM student_id_old;

 ALTER TABLE student_id_new RENAME student_id;

  DROP TABLE student_id_old;
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You could do this using cron and a shell script. But you inevitably will run into issues if there are constraints/indexes/foreign keys in other tables relying on this one.
What is the point for doing this?
Mark BullockQA EngineerCommented:
To run mysql scripts from the command line:
mysql db_name < script.sql >

Open in new window

Complete info is here:
RotebergAuthor Commented:
Thank you Arnold for your answer the purpose of this is automate those script instead of running it mannually. @ Mark thank you as well I will check that out
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I understand that is to automate, the only reason I think to run this is because your ID column/s is set too low such that every so often after entries are deleted, you need to reset.
You are copying data from the old table into the new without changes.
Why not run the alter table and change the column that causes you problems updating other columns in tables that reference thus one.
RotebergAuthor Commented:
Thanks Arnold, I want to convert all student_id that are in var to int  on all affected tables, so you mean I can just ALTER the table and change the column on a production server without going through those process?
that is more risky, but why do you need to run this on a regular basis?
Why not do it once, define the new table based on the the old as you have, and then alter the table setting the particular column to int (you do have to be certain that that columns contents are valid.
then during the insert into newtable select column, column,column, change the type of the column student_id. ONCE AND FOR ALL. make sure you make the adjustment in the data entry side to avoid errors.

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MySQL Server

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