SQL NULL Value | Consequence of NULL values in SQL | NULL vs ISNULL vs IS NULL vs COALESCE

SQL NULL Value | Consequence of NULL values in SQL | NULL vs ISNULL vs IS NULL vs COALESCE

What is NULL in SQL, SQL NULL, Consequence of NULL values in SQL, ISNULL vs IS NULL, IS NULL vs IS NOT NULL, SQL NULL Value, IS NULL Operator, IS NOT NULL Operator, NULL vs Empty, Joining on NULL values, NULL Value issues, IN, NOT IN, EXISTS, Tech Point Fundamentals, Tech Point Funda

Agenda:
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Q01. What is NULL Value in SQL? What is the meaning of NULL in SQL?
Q02. What is the difference between NULL and Undefined in SQL?
Q03. What is ANSI Standard to handle the NULL values in SQL?
Q04. What are the different ways to handle or check the NULL values in SQL?
Q05. Can you cast or Convert a NULL value to any type in SQL? What will it return when you try to CAST or CONVERT a NULL value in SQL?
Q06. What is the use of the SET ANSI_NULLS ON|OFF flag set option?
Q07. What is the use of the SET CONCAT_NULL_YIELDS_NULL ON|OFF set option?
Q08. Can you insert NULL as a value to any column in SQL?
Q09. How can you check for NULL value in SQL?
Q10. What is the difference between ISNULL() and IS NULL?
Q11. What is the difference between ISNULL() and COALESCE() function in SQL?
Q12. Can you put a variable that contains a NULL value in place of NULL in the IS NULL operator clause?
Q13. What is the use of IS NULL and IS NOT NULL operators in SQL?


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