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24 Ιουν 2024 · The SELECT INTO statement in MySQL is used to retrieve data from a table and store it either in another table or in variables. It simplifies data manipulation tasks by allowing easy copying of data and assignment of query results to variables.
The SELECT INTO statement copies data from one table into a new table. SELECT INTO Syntax. Copy all columns into a new table: SELECT * INTO newtable [IN externaldb] FROM oldtable. WHERE condition; Copy only some columns into a new table: SELECT column1, column2, column3, ... INTO newtable [IN externaldb] FROM oldtable. WHERE condition;
17 Οκτ 2021 · Use the CREATE TABLE SELECT syntax. http://dev.mysql.com/doc/refman/5.0/en/create-table-select.html. CREATE TABLE new_tbl SELECT * FROM orig_tbl;
You can also use SELECT ... INTO OUTFILE with a VALUES statement to write values directly into a file. An example is shown here: SELECT * FROM (VALUES ROW(1,2,3),ROW(4,5,6),ROW(7,8,9)) AS t INTO OUTFILE '/tmp/select-values.txt';
MySQL SELECT INTO variable examples. We will use the customers table in the sample database for the demonstration: 1) MySQL SELECT INTO single variable example. The following statement retrieves the city of the customer with the number 103 and stores it in the @city variable: SELECT . city. INTO . @city.
The SELECT statement is used to select data from a database. The data returned is stored in a result table, called the result-set. SELECT Syntax. SELECT column1, column2, ... FROM table_name; Here, column1, column2, ... are the field names of the table you want to select data from.
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), '.
