Try this: CASE WHEN table3.col3 IS NULL THEN table2.col3 ELSE table3.col3 END as col4. The as col4 should go at the end of the CASE the ... ... <看更多>

In total there are 10 values in my table, 5 of which are null. I need to display the count using case statement in Oracle, like output below ... ... <看更多>

The source file name consists of the case-sensitive name of the top-level class it ... Exactly one blank line separates each section that is present. ... <看更多>