9/18/2023 0 Comments Update mysql recordYou can use LIMIT rowcount to restrict the scope of the UPDATE. And this is what you would have to do, because in order to. The mysqlinfo() C API function returns the number of rows that were matched and updated and the number of warnings that occurred during the UPDATE. As far as I remember, MySQL has problems to select from the same table in an update statement. Whilst you certainly can use MySQL's IF() control flow function as demonstrated by dbemerlin's answer, I suspect it might be a little clearer to the reader (i.e. UPDATE returns the number of rows that were actually changed. The alternative (and generally preferred) method for INSERTING into rows that may contain duplicate UNIQUE or PRIMARY. Following is a basic syntax of UPDATE JOIN statement to modify record into the MySQL table: UPDATE Tab1, Tab2, INNER JOIN LEFT JOIN Tab1 ON Tab1.C1 Tab2.C1 SET Tab1.C2 Tab2.C2, Tab2.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |