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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.
A statement with no ORDER BY or LIMIT clause does need to be parenthesized; replacing TABLE t2 with (TABLE t2) in the second statement of the two just shown does not alter the result of the UNION. You can also use ORDER BY and LIMIT with VALUES statements in set operations, as shown in this example using the mysql client:
6 lip 2024 · You could use the CHANGE REPLICATION SOURCE TO Statement syntax. CHANGE REPLICATION SOURCE TO SOURCE_HOST='source2.example.com', SOURCE_USER='replication', SOURCE_PASSWORD='password', SOURCE_PORT=3306, SOURCE_LOG_FILE='source2-bin.001', SOURCE_LOG_POS=4, GET_SOURCE_PUBLIC_KEY=1, SOURCE_CONNECT_RETRY=10;
1 lip 2024 · It covers changes, including incompatible changes introduced in MySQL 8.4. Finally, it covers different ways in which you could upgrade MySQL, including upgrading MySQL on Windows. There’s really no other way than follow the documented process.
14 maj 2024 · If your CI or Docker config simply specifies “mysql:8”, you’re now getting MySQL 8.4. This can cause subtle behavior changes or breakages. To fix this, be sure to specify at least the minor version as well, i.e. “mysql:8.0”.
On April 30th 2024, the first Long Term Support release (MySQL 8.4) was announced. Let’s have a look at what is new in comparison to 8.0. Increase the scale of your PostgreSQL and MySQL deployment by up to 100x with Readyset - all without modifying your application code or database.
7 kwi 2021 · We want to keep the "first" row with the lesser id value (s2), and delete the other one (s1). Hence the delete s1 from .... In MySQL's multi-table delete syntax, you specify which row will be deleted before the from keyword. The other row alias defined in the from clause (s2) will not be deleted.
