Db2 11 Db2 SQL CASE expressions IBM
Specifies a condition that is true false or unknown about a row or group of table data The search condition can be a predicate including predicates that contain fullselects scalar or non scalar or row value expressions
Db2 CASE Expressions Adding If Else Logic to Queries in Db2 DB2 Tutorial, A CASE expression allows you to select an expression based on evaluation of one or more conditions In other words it allows you to add the if else logic to your queries Db2 supports two kinds of CASE expressions simple CASE and searched CASE expressions Both simple and searched CASE are expressions therefore you can use them in any
Db2 11 Db2 SQL CASE statement IBM
The CASE statement selects an execution path based on multiple conditions A CASE statement operates in the same way as a CASE expression Syntax label CASE simple when clause searched when clause else clause END CASE simple when clause expression WHEN expression THEN SQL procedure statement searched when clause
Examples of select statement queries IBM, The following examples illustrate the select statement query Example 1 Select all columns and rows from the EMPLOYEE table SELECT FROM EMPLOYEE Example 2 Select the project name PROJNAME start date PRSTDATE and end date PRENDATE from the PROJECT table Order the result table by the end date with the most recent dates appearing first
Db2 11 Db2 SQL Examples of SELECT statements IBM
Db2 11 Db2 SQL Examples of SELECT statements IBM, How a SELECT statement works Example 1 Select all the rows from DSN8B10 EMP SELECT FROM DSN8B10 EMP Example 2 Select all the rows from DSN8B10 EMP arranging the result table in chronological order by date of hiring SELECT FROM DSN8B10 EMP ORDER BY HIREDATE
SQL SELECT Sql Select Statement Where Multiple Values
CASE expression IBM
CASE expression IBM A CASE expression can be used to group these and to show the level of education SELECT EMPNO FIRSTNME MIDINIT LASTNAME CASE WHEN EDLEVEL 15 THEN SECONDARY WHEN EDLEVEL 19 THEN COLLEGE ELSE POST GRADUATE END FROM EMPLOYEE Another interesting example of CASE statement usage is in protecting from division by 0 errors
Db2 Sql With Clause Example
DB2 SQL Case Statement The CASE statement goes through conditions and returns a value when the first condition is met like an COBOL Evaluate statement So If a condition is true it will stop reading and return the result If no conditions are true it returns the value in the ELSE clause If ELSE part is not added in CASE statement and DB2 SQL Case Statement DB2 Tutorial IBMMainframer. Here is an example of an SQL procedure with a CASE statement with a simple case statement when clause CREATE PROCEDURE UPDATE DEPT IN p workdept LANGUAGE SQL BEGIN DECLARE v workdept CHAR 3 SET v workdept p workdept CASE v workdept WHEN A00 THEN UPDATE department SET deptname D1 WHEN B01 THEN UPDATE department SET deptname D2 ELSE UPDATE department SET deptname D3 This chapter contains a basic introduction to Db2 SQL It also has numerous examples illustrating how to use this language to answer particular business problems In this case Db2 defaults to CHAR 1 for the first column and DECIMAL 5 0 for the second column in a single SELECT statement one can still use the but it must fully
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