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sql datatype
SQL Server NCHAR
NCHAR data type is used to store Unicode string data of fixed-length.
NCHAR data type is used to store Unicode string data of fixed-length.
It stores data at 2 byte per character.
It supports up to 4000 characters.
SQL sp_help
SQL Sp_help is part of database engine stored procedures ,which returns information about a database object or a data type.