Explore SQL with Tom Coffing of Coffing Data Warehousing! In this lesson, learn about EXIST and NOT EXIST Subqueries!
From Coffing Data Warehousing
In this video we are going to write code to stop duplicate entries, it happen when we insert form data in database table directly, What we need to do is that we ...
sql insert if not exists In many cases we need to insert a row by checking whether it is already available or not. First we need to find a row is present or not. then if ...
From Computer Science lectures and tutorials
SQL Stored Procedure - If Condition Calculate Salary Overtime by: Professor Saad Yousuf DB2 UDB, Oracle, SQL Server, MySQL.
From Professor Saad
We as SQL Server developers send our DDL Scripts ( Add New Column, Drop some column from table, or Alter Stored Procedure) to DBA. After deployment we ...
So far, we have this table declaration: CREATE TABLE users( user_id NUMBER, username VARCHAR(50 CHAR) first_name VARCHAR2(50 CHAR), ...
Welcome to an SQLite mini-series! SQLite, as the name suggests, is a lite version of an SQL database. SQLite3 comes as a part of the Python 3 standard library.