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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.
28 mar 2009 · MySQL (and subsequently SQLite) also support the REPLACE INTO syntax: REPLACE INTO my_table (pk_id, col1) VALUES (5, '123'); This automatically identifies the primary key and finds a matching row to update, inserting a new one if none is found.
You can use REPLACE instead of INSERT to overwrite old rows. REPLACE is the counterpart to INSERT IGNORE in the treatment of new rows that contain unique key values that duplicate old rows: The new rows replace the old rows rather than being discarded.
MySQL - REPLACE Query - In general, if we want to add records into an existing table, we use the MySQL INSERT statement. Likewise, we can also add new records or replace an existing records using the MySQL REPLACE statement. The replace statement is similar to the insert statement.
You can use a REPLACE statement to insert one or more rows of data. This is the syntax of the REPLACE statement: REPLACE [INTO] table_name (column_1, column_2, ...) VALUES (value_11, value_12, ...), (value_21, value_22, ...) ...; Here: REPLACE INTO and VALUES are keywords, and INTO can be omitted.
10 lip 2024 · MySQL REPLACE () replaces all the occurrences of a substring within a string. This function is useful in - Substring replacement: It allows us to replace all occurrences of a substring with a new substring. Removing characters: By replacing a specific substring with an empty string, REPLACE () can remove characters or substrings from a string.
