How do I update a mysql db?

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How do I update a mySQL database with  new values, but the unchanged rows should be left as it is and need to update changed rows and need to add new rows if the record is not available.

I am a beginner and Give me a basic idea please

Posted 5-Jan-16 17:44pm

Abdul Rahman BCS

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Mohibur Rashid 6-Jan-16 0:39am

Have you tried anything?

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Garth J Lancaster · Answer 1 · 2016-01-05T18:21:00

Not exactly sure what you're asking, seems like 2 answers are required

1) a straight update

see MySQL :: MySQL 5.7 Reference Manual :: 13.2.11 UPDATE Syntax[^] - you do an SQL update with a 'where' clause to make sure only particular rows are updated - since you provide no other information eg table name, schema, cant really help you more on it

2) Another option that may be better is a MySQL INSERT ... ON DUPLICATE KEY UPDATE type of statement per : MySQL :: MySQL 5.7 Reference Manual :: 13.2.5 INSERT Syntax[^]