[oracle] If statement within Where clause

CASE might help you out:

SELECT t.first_name,
       t.last_name,
       t.employid,
       t.status
  FROM employeetable t
 WHERE t.status = (CASE WHEN status_flag = STATUS_ACTIVE THEN 'A'
                        WHEN status_flag = STATUS_INACTIVE THEN 'T'
                        ELSE null END)
   AND t.business_unit = (CASE WHEN source_flag = SOURCE_FUNCTION THEN 'production'
                               WHEN source_flag = SOURCE_USER THEN 'users'
                               ELSE null END)
   AND t.first_name LIKE firstname
   AND t.last_name LIKE lastname
   AND t.employid LIKE employeeid;

The CASE statement evaluates multiple conditions to produce a single value. So, in the first usage, I check the value of status_flag, returning 'A', 'T' or null depending on what it's value is, and compare that to t.status. I do the same for the business_unit column with a second CASE statement.

Examples related to oracle

concat yesterdays date with a specific time ORA-28001: The password has expired how to modify the size of a column How to create a blank/empty column with SELECT query in oracle? Find the number of employees in each department - SQL Oracle Query to display all tablespaces in a database and datafiles When or Why to use a "SET DEFINE OFF" in Oracle Database How to insert date values into table error: ORA-65096: invalid common user or role name in oracle In Oracle SQL: How do you insert the current date + time into a table?

Examples related to plsql

How can you tell if a value is not numeric in Oracle? Why do I get PLS-00302: component must be declared when it exists? Split function in oracle to comma separated values with automatic sequence PLS-00428: an INTO clause is expected in this SELECT statement What is the max size of VARCHAR2 in PL/SQL and SQL? PLS-00201 - identifier must be declared Default Values to Stored Procedure in Oracle How to call Oracle MD5 hash function? Proper way of checking if row exists in table in PL/SQL block PLS-00103: Encountered the symbol when expecting one of the following:

Examples related to plsqldeveloper

Oracle PL Sql Developer cannot find my tnsnames.ora file If statement within Where clause ORA-12154: TNS:could not resolve the connect identifier specified (PLSQL Developer) Oracle Convert Seconds to Hours:Minutes:Seconds how to convert a string date to date format in oracle10g Explicitly set column value to null SQL Developer How to test an Oracle Stored Procedure with RefCursor return type? How to connect to remote Oracle DB with PL/SQL Developer? How to create a dump with Oracle PL/SQL Developer?