Answers for "ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`project`.`#sql-1 a60_a`, CONSTRAINT `fk_desc` FOREIGN KEY (`pkg_desc`) REFERENCES `services` (`Pkg_desc`))"

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mysql error 1452

SELECT child_table.* 
FROM child_table 
LEFT JOIN parent_table 
  ON parent_table.referenced_column = child_table.referencing_column 
WHERE parent_table.referenced_column IS NULL


-- Delete all data from output of that query
Posted by: Guest on August-28-2020

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