SQL

Oracle SQL Interview Questions

Here are some of the frequently asked SQL interview questions. Enjoy! Q1. What is the difference between VARCHAR & VVARCHAR2? Both...

Database normalization is the process of refining the data in accordance with a series of normal forms. This is done to reduce data...

To query a date column between specific dates, use below query select count(*) from DW.TB_PCDWH0091_FCT_PROJ_DTL where dw_load_dt between...

Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. Note: same CASE...

When you normalize data and create tables inside the database, the data is scattered into different tables. In order to create meaningful...

SQL conversion functions are single row functions designed to alter the nature of the data type of a column value, expression, or...

The goal of this project is to test your SQL skills. You would need to use both technical and analytical skills to solve this project....

The goal of this project is to test your SQL skills. You would need to use both technical and analytical skills to solve this project....

To execute any .sql script, we will have to go to specific folder which contains .sql script, start sqlplus and then run the script. It...

The Oracle REGEXP_ functions are used to search and manipulate strings using simple string patterns. These functions can be used in SQL...