Specifies whether the column can accept NULL values. Columns that do not allow NULL values can be added only if they have a default specified. If the new column allows NULL values and no default is ...

When you alter the attributes of a column and an index has been defined for that column, the values in the altered column continue to have the index defined for them. If you drop a column with the ...

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Users should have no problem creating a secondary index (also referred to as non-clustered indexes or NCI) on a column store table (also referred to as clustered column store indexes or CCI).