If you add the created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP column definition retroactively, then the timestamp will be the date the column was generated, NOT the date the existing rows were inserted. DELETE FROM tableName WHERE `created_at` > ' 00:00:00' LIMIT rowcount The DELETE statement deletes rows from tblname and returns the number of deleted rows. So from this you can then DELETE as you require. Single-Table Syntax DELETE LOWPRIORITY QUICK IGNORE FROM tblname AS tblalias PARTITION (partitionname, partitionname. Output id created_at some_column some_other_column INSERT INTO `tableName` (`some_column`) VALUES ('horses!') When you insert data, you can ignore this column because the value will be auto generated by MySQL. Note from this the created_at column will hold the date and time stamp of the row generation. `some_other_column` INT NULL DEFAULT NULL , `some_column` VARCHAR(50) NULL DEFAULT NULL , `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, /* THIS COLUMN */ DELETE from newTableName Step 3) To Add Constraints, Goto Structure of a table. If Data is important then directly go to Step 3. Step 2) Delete All rows If Data is not inserted in testing phase and it is not useful. Table Creation CREATE TABLE `database`.`tableName` ( It doesn’t copy constraints like Auto Increment and Primary Key into newTablename. (It is usually useful to also index this column). Setting the auto increment adds about a second in total, but it's still. You can then use this column in your DELETE query, as others have referenced. I was sure TRUNCATE will always perform better, but in my case, for a database with approximately 30 tables with foreign keys, populated with only a few rows, it took about 12 seconds to TRUNCATE all tables, as opposed to only a few hundred milliseconds to DELETE the rows. Then, execute it as a prepared statement. When you CREATE the table, you should add a row that is a timestamp column that can then be set as the insert date by setting the default value as CURRENT_TIMESTAMP. To delete rows in a MySQL table, use the DELETE FROM statement: DELETE FROM products WHERE productid1 The WHERE clause is optional, but youll usually want it, unless you really want to delete every row from the table. First collect the names of the tables in a variable called massdeletetablecommand as a delete list and a table list. Luckily, this is quite easily to set out with a new MySQL table, requiring minimum upkeep and maintenance ongoing. This is only possible if you also record the date the row was inserted at the point of insert. Is it possible to delete records from Mysql based upon the date they were inserted
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