Is Null in Teradata Query

Value of First Column in IndexValue of Second Column in Indexnullnull

Where is NULL in Teradata?

If we specify the Column Name equals to NULL in the where condition, we will receive an error in Teradata as WHERE NULL = NULL is not valid because it can never be true. Instead of this , we need to use like WHERE Column_Name IS NULL in the select query to fetch columns which contains NULL values in it.

Is NULL a DB?

Null or NULL is a special marker used in Structured Query Language to indicate that a data value does not exist in the database. Introduced by the creator of the relational database model, E. F. … In SQL, NULL is a reserved word used to identify this marker. A null should not be confused with a value of 0.