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How to Use Rownum In Oracle

This tutorial page is based on examples to make it easier to follow. There is a confusion using function Oracle ROWNUM and …

How To Use COALESCE In Oracle

This online tutorial is based on examples to make it easier to follow. Oracle COALESCE function returns first non-empty (not null) value …

How To Use Group By In Oracle

This online tutorial is based on examples to make it easier to follow. Clause Oracle Group By will remove duplicated lines from …

How To Use NVL2 In Oracle

This online tutorial page is based on examples to make it easier to follow. The Oracle NVL2 function has 3 input parameters …

How To Use REPLACE In Oracle

This online tutorial is based on examples to make it easier to follow. Function Oracle Replace allows replacing a value in text …

How To Use Union In Oracle

This tutorial page is based on examples to make it easier to follow. Operators Oracle Union and Oracle Union ALL are connecting …