We can also use theSELECT INTOstatement to create a new table with the given structure (without copying the data). For that, we use theWHEREclause with a condition that returnsfalse. -- copy table structure onlySELECT*INTONewCustomersFROMCustomersWHEREfalse; Here, the SQL command creates an e...
PostgreSQL SELECT INTO Summary: in this tutorial, you will learn how to use the PostgreSQL SELECT INTO statement to create a new table from the result set of a query. If you want to select data into variables, check out the PL/pgSQL SELECT INTO statement. Introduction to PostgreSQL SELECT...
Summary: in this tutorial, you will learn how to use the PL/SQL SELECT INTO statement to fetch data of a single row from a table into variables. 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...
Summary: in this tutorial, you will learn how to use the PL/pgSQL select into statement to select data from the database and assign it to a variable. Introduction to PL/pgSQL Select Into statement The select into statement allows you to select data from the database and assign it to a...
INTOnewtable[INexternaldb] FROMoldtable WHEREcondition; The new table will be created with the column-names and types as defined in the old table. You can create new column names using theASclause. SQL SELECT INTO Examples The following SQL statement creates a backup copy of Customers: ...
The following example demonstrates using theSELECT INTOstatement 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: DECLARE howmany NUMBER; some_first employees.first_name%TYPE; ...
typeint)insertinto#JobInfoexecmsdb..sp_help_job 返回错误信息:INSERT EXEC 语句不能嵌套。 Msg 8164, Level 16, State 1, Procedure sp_get_composite_job_info, Line 72 An INSERT EXEC statement cannot be nested. 展开错误信息中的存储过程:
SELECT Statement Example?If we want to display the first and last name of an employee combined together, the SQL Select Statement would be likeSELECT first_name + ' ' + last_name FROM employee; Output: first_name + ' ' + last_name --- Rahul Sharma Anjali Bhagwat Stephen Fleming She...
SELECT * INTO @myvar FROM t1; Before a trailing locking clause. Example: SELECT * FROM t1 INTO @myvar FOR UPDATE; At the end of the SELECT. Example: SELECT * FROM t1 FOR UPDATE INTO @myvar;The INTO position at the end of the statement is the preferred position. The position before...
SELECT is usually the first word in an SQL statement. Most SQL statements are either SELECT orSELECT…INTOstatements. The minimum syntax for a SELECT statement is: SELECTfieldsFROMtable You can use an asterisk (*) to select all fields in a table. The following example select...