SQL Plus - Set Null

Card Puncher Data Processing


Set null defines how nulls are displayed in a oracle result set :

set null text

Use the NULL clause of the COLUMN command to override the setting of the NULL variable for a given column. The default output for a null is blank (“”).


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Card Puncher Data Processing
Oracle Database - Null value (Missing Value)

SQL Null in the Oracle context. By default all columns allow NULL. Nulls are stored in the database and require 1 byte to store the length of the column (zero). Null is not aggregated and selected on...

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