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23 sty 2012 · Replace works like insert, except that if there is a row with the same key you are trying to insert, it will be deleted on replace instead of giving you an error. You can either specify arguments directly: REPLACE INTO sales( `item_id`, `date`, `qty`, `price` ) VALUES( 15, '2012-01-01`, 5, '120.00' ) or specify them using SELECT:
The way I implement that condition is the following SQL commands: INSERT INTO t3 SELECT * FROM t1; REPLACE INTO t3 SELECT * FROM t2 WHERE t2.measurement_id NOT IN (SELECT measurement_id FROM t1) OR t2.measurement_id IN (SELECT measurement_id FROM t1 WHERE value IS NULL);
Using MySQL REPLACE to insert data from a SELECT statement. The following illustrates the REPLACE statement that inserts data into a table with the data coming from a query. REPLACE INTO table_1(column_list) SELECT column_list FROM table_2 WHERE where_condition; Code language: SQL (Structured Query Language) (sql)
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.
MySQL 8.0.19 and later supports TABLE as well as SELECT with REPLACE, just as it does with INSERT. See Section 15.2.7.1, “INSERT ... SELECT Statement”, for more information and examples.
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.
1 kwi 2024 · The MySQL REPLACE statement allows us to replace data in a table with new data. The new data can be explicitly provided in the statement or it could come from the result of a query. Therefore, we can use the REPLACE statement to effectively “refresh” a table with new/updated data from another table.
