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COALESCE (e1,e2,...,eN) CASE WHEN c1=var1 OR (c1 IS NULL AND var1 IS NULL) THEN 'a' WHEN c1=var2 OR (c1 IS NULL AND var2 IS NULL) THEN 'b' ELSE NULL END. DECODE (c1,var1, 'a', var2, 'b') CASE expressions allow an expression to be selected based on the evaluation of one or more conditions.
- CASE expressions
Use a CASE expression to list the full name of the division...
- CASE expressions
11 lut 2016 · I am using a CASE expression in my WHERE clause like this: SELECT * FROM ASPECT.WR_AM_ADT_SUMM INNER JOIN ASPECT.WR_AM_DLR_DTL ON AS_CNTRY_CD = DD_CNTRY_CD AND AS_DLR_CD = DD_...
24 cze 2019 · If you need to refer to the CASE expression in the WHERE clause, then you have two choices. First, you may subquery your current query, and assign an alias to the CASE expression: SELECT * FROM ( SELECT CASE WHEN ...
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 clause that accepts an expression such as SELECT , WHERE , GROUP BY , and HAVING clauses.
Use a CASE expression to list the full name of the division to which each employee belongs. SELECT EMPNO, LASTNAME, CASE SUBSTR(WORKDEPT,1,1) WHEN 'A' THEN 'Administration' WHEN 'B' THEN 'Human Resources' WHEN 'C' THEN 'Design' WHEN 'D' THEN 'Operations' END FROM EMPLOYEE;
Use a searched case statement WHEN clause to update column DEPTNAME in table DEPT, depending on the value of SQL variable . The CASE statement selects an execution path based on the evaluation of one or more conditions. A CASE statement operates in the same way as a CASE expression.
26 cze 2023 · The CASE statement in the WHERE clause can conditionally filter rows based on defined criteria. The syntax for the CASE statement in the WHERE clause is shown below. The CASE expression matches the condition and returns the value of the first THEN clause.
