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Asked: 2026-06-12T17:21:15+00:00

I write a query when doing a tutorial Agile web application development with yii.

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I write a query when doing a tutorial Agile web application development with yii. I was trying to alter a table with this query and got this error in phpmyadin

ALTER TABLE 'tbl_issue' ADD CONSTRAINT 'FK_issue_project' FOREIGN KEY
('project_id') REFERENCES 'tbl_project' ('id') ON DELETE CASCADE ON
UPDATE RESTRICT

> #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use
> near ''tbl_issue' ADD CONSTRAINT 'FK_issue_project' FOREIGN KEY
> ('project_id') REFERE' at line 1

Can anyone help please?

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1 Answer

  1. Editorial Team

    The problem may be that you’re using single quotes instead of backticks as enclosing characters for table, field and index names.

    Try: ALTER TABLE `myTable` ADD CONSTRAINT `myConstraint`...

    (in case the posted code is actually what you used for your statement executed through phpMyAdmin).

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