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Is it possible to get last updated time and date of the row using MYSQL server.
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SELECT name AS TableName, create_date AS CreatedDate, modify_date as ModifyDate FROM sys. tables order by ModifyDate; ...will tell me the last time a table was created and modified (from a DDL perspective).
To get yesterday's date, you need to subtract one day from today's date. Use GETDATE() to get today's date (the type is datetime ) and cast it to date . In SQL Server, you can subtract or add any number of days using the DATEADD() function. The DATEADD() function takes three arguments: datepart , number , and date .
One way is to start a transaction, select the contents of the row and compare it to what you're going to update it to. If they don't match, then do the update and end the transaction. If they match, rollback the transaction.
Well there is no inbuild feature exists with MySQL. Though you can get the same effect by adding a timestamp column:
ALTER TABLE NAMEYOURTABLE
ADD COLUMN last_update TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
using above to create timestamp with name last_update column will make it pretty much automatically managed and updated. Now you can select from NAMEYOURTABLE the last updated row based on the timestamp.
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