-- Assign the function result to the variable: SELECT @MyResult1 = SQRT(@MyNumber1), @MyResult2 = SQRT(@MyNumber2) -- Return the variable value SELECT @MyResult1, @MyResult2 上面的例子首先声明了4个变量,然后用两个SELECT语句给这些变量赋值,而不是用4个SELECT语句给变量赋值。虽然这些...
How to select result from a OPENQUERY into a variable How to select rows that contain substrings from another table How to Select Tables Using 'LIKE' how to select the 2nd word in a string? How to select the nth word in a string? How to select top 1 from union? how to select t...
STATEFUL_PROCESSOR_INCORRECT_TIME_MODE_TO_ASSIGN_TTL、STATEFUL_PROCESSOR_TTL_DURATION_MUST_BE_正、STATEFUL_PROCESSOR_UNKNOWN_TIME_MODE、STATE_STORE_CANNOT_CREATE_COLUMN_FAMILY_WITH_RESERVED_CHARS、STATE_STORE_CANNOT_USE_COLUMN_FAMILY_WITH_INVALID_NAME、STATE_STORE_COLUMN_FAMILY_SCHEMA_INCOMPATIBLE、STATE...
Specify a database and connect to it (DECLARE DATABASE,CONNECT). Assign variable names (DECLARE STATEMENT). Initialize descriptors (DESCRIBE). Specify how error and warning conditions are handled (WHENEVER). Parse and run SQL statements (PREPARE,EXECUTE,EXECUTE IMMEDIATE). ...
Here's the result set. Output B. Use SELECT@local_variableto return null In the following example, a subquery is used to assign a value to@var1. Because the value requested forCustomerIDdoesn't exist, the subquery returns no value, and the variable is set toNULL. ...
@ return_variable can be specified only for Transact-SQL functions and not for CLR functions. select_stmt The single SELECT statement that defines the return value of an inline table-valued function (TVF). ORDER (<order_clause>) Specifies the order in which results are being returned from ...
DECLARE@MyVariableINT;SET@MyVariable =1;EXECUTEsp_executesql N'SELECT @MyVariable';-- this produces an error Set a value in a Transact-SQL variable When a variable is first declared, its value is set toNULL. To assign a value to a variable, use theSETstatement. This is the preferred ...
Property ExpressionsUse variables to provide values in the property expressions that set the properties of packages and package objects. For example, the expression,SELECT * FROM @varTableNameincludes the variablevarTableNamethat updates the SQL statement that an Execute SQL task runs. The expression...
Optimizing Backup and Restore Performance in SQL ServerThis article covers various best practices that you can use to improve the performance of Backup/Restore operations. For example, you can assign theSE_MANAGE_VOLUME_NAMEspecial privilege to the Windows account that's running SQL Server to enable...
SQL>variable v_salary number SQL>begin 2 select salary into :v_salary 3 from hr.employees whereemployee_id=100; 4 dbms_output.put_line('The result is '||:v_salary); 5 end; 6 / The result is 100000 PL/SQL procedure successfully completed. ...