How to delete data from a large table in mysql?

2 years ago
Benjamin Taylor
1 minute

There are several methods to delete large table data in MySQL.

  1. To remove data from a large table, you can utilize the DELETE statement. However, this method could pose performance issues as it deletes data row-by-row and generates a significant amount of logs.

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DELETE FROM table_name WHERE condition;
  1. Using the TRUNCATE TABLE statement to delete data: The TRUNCATE TABLE statement can quickly delete all data in a table without generating logs. However, it cannot include a WHERE clause, so it can only be used to delete all data in a table.

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TRUNCATE TABLE table_name;
  1. To delete a table and recreate it using the DROP TABLE statement: if you want to delete all data in a table and create a new empty table, you can do so by using the DROP TABLE statement to delete the table, and then recreate it.

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DROP TABLE table_name;
CREATE TABLE table_name (...);

Before performing any of the methods mentioned above, it is advisable to back up your data to prevent accidental deletion of important information.

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