You can also join tables usingcase. For example, you may have a table of exam grades you want to link to the exam results. Use the case expression in the join clause like so: As withwhere, joining tocaselimits the optimizer. If you find yourself usingcasein many joins, you may wa...
This Oracle WHERE clause example uses the WHERE clause to define multiple conditions, but instead of using the AND condition, it uses the OR condition. In this case, this SELECT statement would return all supplier_id values where the supplier_name is Apple or Microsoft.Example...
To begin with the CASE expression -the key point is that CASE is an expression, not a statement - it has to return a value.Your CASE looks like this: Code: where case When d = 2 then o.adddte between date1 and date2 when d = 3 then o.adddte between date3 and date4 when d ...
You can use aCASEexpression in any statement or clause that accepts a valid expression. For example, you can use theCASEexpression in statements such asSELECT,UPDATE, orDELETE, and in clauses likeSELECT,WHERE,HAVING, andORDDER BY. OracleCASEexpression has two formats: the simpleCASEexpression ...
In this example, if the deptno column has a 10 in it, the SQL query will return the value accounting rather than the number 10. If the deptno is not 10, 20, 30, or 40, then the CASE statement will fall through to the ELSE clause, which will return unassigned. Note that with a ...
For example, if NAME is dependent on TYPE, the entry LOV for NAME's WHERE clause would include the condition: WHERE TYPE = :MY_BLOCK.TYPE LOVs in ENTER-QUERY Mode LOVs in ENTER-QUERY mode should be used sparingly, as Query Find is the preferred method for a user to locate records. ...
In the "Where Clause" section, enter an additional Where clause to further constrain a query. For example, go back to the example above. Say you wish to further constrict the search results by only searching for current employees. In this case, you would add an additional Where clause defin...
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I have a delete statement: My original Delete: DELETE FROM TableName A WHERE SCHED_SURGERY_TM >= TRUNC(sysdate)-90 Now I need to delete based upon...