2 -> 3 -> 1 > 4 -> 5
2 -> 3 -> 5 -> 4 -> 1
3 -> 5 -> 2 -> 4 -> 1
2 -> 3 -> 4 -> 1 -> 4
Used when we are expecting the huge numbers rows in resultset.
Prevent executing query which scans more than defined number of rows.
It is not a predefined keyword of Mysql.
It does not work on join queries.
It returns the successful response but does not insert record in Table.
It creates dummy data in DB.
It prevent the Update & Delete query from execution without where clause.
It helps in maintaining the versions of records in table.
NOW() shows date with time and CURRENT_DATE() shows date only.
NOW() shows date and CURRENT_DATE() shows date with time.
NOW() shows time only and CURRENT_DATE() shows date.
Both are same.
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31 Aug 14:05 PM
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