sysname and longsysname are user-defined datatypes used in the system tables. sysname is defined as:
varchar(30) "NOT NULL"
longsysname is defined as:
varchar(255) "NOT NULL"
You can declare a column, parameter, or variable to be of type sysname or . Alternately, you can also create a user-defined datatype with a base type of sysname or longsysname.
You can then use this user-defined datatype to create columns. For more information, see “Creating user-defined datatypes”.
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