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SQL SELECT INTO Examples. The following SQL statement creates a backup copy of Customers: SELECT * INTO CustomersBackup2017. FROM Customers; The following SQL statement uses the IN clause to copy the table into a new table in another database: SELECT * INTO CustomersBackup2017 IN 'Backup.mdb' FROM Customers;
- SQL Insert Into Select
The SQL INSERT INTO SELECT Statement. The INSERT INTO SELECT...
- SQL Case Expression
The SQL CASE Expression. The CASE expression goes through...
- SQL Insert Into Select
24 Ιουν 2024 · The SELECT INTO statement in SQL retrieves data from a database table and stores it into variables or a new table. It's commonly used to copy data from one table to another or to assign values from a query result to variables.
Create tables from different databases: -- create a table from another table from another database with all attributes. CREATE TABLE stack2 AS SELECT * FROM second_db.stack; -- create a table from another table from another database with some attributes.
MySQL creates new columns for all elements in the SELECT. For example: mysql> CREATE TABLE test (a INT NOT NULL AUTO_INCREMENT, -> PRIMARY KEY (a), KEY(b)) -> ENGINE=InnoDB SELECT b,c FROM test2; This creates an InnoDB table with three columns, a, b, and c.
26 Φεβ 2010 · 1. SELECT settingValue FROM config WHERE settingKey=`MasterPassword`. With a MyISAM table, this query will have the same performance be the settingKey a PRIMARY KEY or a secondary index. With an InnoDB table, this query will most probably be faster if settingKey is a secondary index.
17 Φεβ 2014 · In MySQL, I would like to create a new table with all the information in this query: select * into consultaa2 from SELECT. CONCAT( 'UPDATE customers SET. customers_default_address_id= ', (SELECT a.address_book_id FROM. address_book a where. c.customers_id=a.customers_id order by. address_book_id desc limit 1), '.
Example: SELECT * FROM t1 FOR UPDATE INTO @myvar; The INTO position at the end of the statement is supported as of MySQL 8.0.20, and is the preferred position. The position before a locking clause is deprecated as of MySQL 8.0.20; expect support for it to be removed in a future version of MySQL.
