To finish up, let’s take a look at CASE functionality inside an UPDATE statement. The employees deserve a bonus in the form of extra vacation days. If you don’t have many left, you get 3 extra days. If you have between 10 and 20 hours left, you get 2 extra days, otherwise you ...
https://linuxhint.com/sql-case-statement/ This tutorial mainly focuses on building a nested case statement in conjunction with the WHEN clauses. Nested CASE WHEN Statements In SQL, we can use a set of nested CASE WHEN statements in SQL to evaluate the multiple conditions and return a differe...
Syntax for Transact-SQL multi-statement table-valued functions. syntaxsql 复制 CREATE [ OR ALTER ] FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ NULL ] [ = default ] [ READONLY ] } [ , ...n ] ] ) RETURNS...
EXEC SQL EXECUTE st USING :staff-id, :last-name ,:first-name, :age, :employment-date END-EXEC IF SQLCODE = ZERO DISPLAY 'Statement executed.' ELSE DISPLAY 'Error: Could not execute statement.' DISPLAY SQLERRMC DISPLAY SQLERRML EXEC SQL DISCONNECT ALL END-EXEC STOP RUN END-IF * Finally,...
case when <condition> then <value> when <condition> then <value> ... else <value> end Examples The following examples will make the use of CASE expression more clear. E.g.: Returning categories based on the salary of the employee. ...
Examples: Azure Synapse Analytics and Analytics Platform System (PDW) G. Use a SELECT statement with a CASE expression Within a SELECT statement, theCASEexpression allows for values to be replaced in the result set based on comparison values. The following example uses theCASEexpression to change...
Example 5: SQL IIF statement with a table columnIn the previous examples, we either specify values directly in the IIF statement or specified variables for it. Usually, we want to use it with the existing data in a SQL table. We can use the IIF statement with a table column as well. ...
expressions in your CASE clause, the first expression that evaluates to TRUE will be the code block that is evaluated by your TSQL statement. To better understand how the CASE expression works I will review the syntax of the CASE expression and then go through a number of different examples....
CASE WHEN [full_eval_expression] THEN [output_expression] … ELSE [output_expression] END Examples: DECLARE @variable int = 5; SELECT [simple] = CASE @variable WHEN 1 THEN 'One' WHEN 5 THEN 'Five' ELSE 'Some other number' END; ...
See the execution plan for a SQL statement (EXPLAIN PLAN) Lock a table or view, temporarily limiting other users' access (LOCK TABLE)DML statements are the most frequently used SQL statements. Some examples of DML statements are:SELECT last_name, manager_id, commission_pct + salary FROM emplo...