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SELECT INTO. DECLARE the_variable NUMBER; BEGIN SELECT my_column INTO the_variable FROM my_table; END; Make sure that the query only returns a single row: By default, a SELECT INTO statement must return only one row. Otherwise, PL/SQL raises the predefined exception TOO_MANY_ROWS and the values of the variables in the INTO clause are undefined.
PL/SQL SELECT INTO statement is the simplest and fastest way to fetch a single row from a table into variables. The following illustrates the syntax of the PL/SQL SELECT INTO statement: SELECT select_list INTO variable_list FROM table_name WHERE condition; Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )
5 lis 2024 · In PL/SQL, the INSERT INTO SELECT statement is used to insert data into a table by selecting data from one or more tables. This is a powerful feature for populating tables with data from existing tables or views, making it useful for data migration, reporting, and backup processes.
5 kwi 2023 · In this article, we will study the syntax of the PL/ SQL select into statement, most common exceptions that occur while using this statement, and will also learn how we can implement the select into a statement to retrieve a single column or multiple column values in a variable with the help of certain examples.
Use the SELECT... INTO statement to retrieve exactly one row of data. TimesTen returns an error for any query that returns no rows or multiple rows.
The SELECT INTO statement retrieves values from one or more database tables (as the SQL SELECT statement does) and stores them in variables (which the SQL SELECT statement does not do).
The following example demonstrates using the SELECT INTO statement to query a single value into a PL/SQL variable, entire columns into PL/SQL collections, or entire rows into a PL/SQL collection of records:
