| http://www.w3.org/ns/prov#value | - If a clustered constraint or index already exists on a table, PRIMARY KEY constraints default to NONCLUSTERED. Columns that are of the ntext, text, varchar(max), nvarchar(max), varbinary(max), xml, or image data types cannot be specified as columns for an index. column Is a column or list of columns specified in parentheses that are used in a new constraint.
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