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13 kwi 2022 · I want to be able to update a table of the same schema using a "replace into" statement. In the end, I need to be able to update a large table with values that may have changed. Here is the query I am using to start off: REPLACE INTO table_name.
In this tutorial, you will learn how to use the MySQL REPLACE statement to insert data into a table or update existing data of a table.
REPLACE works exactly like INSERT, except that if an old row in the table has the same value as a new row for a PRIMARY KEY or a UNIQUE index, the old row is deleted before the new row is inserted. See Section 15.2.7, “INSERT Statement”. REPLACE is a MySQL extension to the SQL standard.
You cannot replace into a table and select from the same table in a subquery. MySQL uses the following algorithm for REPLACE (and LOAD DATA ... REPLACE):
7 mar 2024 · REPLACE() function is a String function and can be used to replace words or characters in a given column, whereas REPLACE statement is similar to INSERT statements and can be used to INSERT or REPLACE entire rows in the MySQL table.
27 lut 2024 · In MySQL, we can use the REPLACE statement to insert data if we think that some rows need to replace existing rows. The REPLACE statement works just like the INSERT statement, except that if it contains rows with the same PRIMARY KEY or UNIQUE index as those in the table, then it replaces those rows in the table.
24 mar 2024 · When using the MySQL REPLACE statement to update another table based on a source table, we have the option of using a SELECT statement to select the whole table (or part of it) or the TABLE statement to select the whole table.
