DB2 Queries

INTERSECT and EXCEPT use in SQL Queries

An INTERSECT operation retrieves the matching set of distinct values (not rows) from two columns. The INTERSECT ALL returns the…

6 years ago

UNION vs UNION ALL use in SQL Queries

A UNION operation combines two sets of columns and removes duplicates. The UNION ALL expression does the same but does…

6 years ago

COALESCE DB2 Function in SQL Queries

COALESCE DB2 function is used to handle the NULL values that might be present in the data or a list…

6 years ago