Delete a single column from a Tabular object:

Delete multiple columns:

Delete a column from a Tabular object:

Delete two columns:

Use column indices instead:

Or a Span specification:

It is possible to delete all columns from a Tabular object:

The result has the original number of rows and zero columns:

Delete a column from a Dataset object:

Delete two columns:

Delete a column from a list of associations with common keys:

Delete two columns:

Delete a column from a matrix:

Delete the first and the last columns:

Delete a span of columns:

Use the operator form of DeleteColumns:

Take a Tabular object:

Delete one column by specifying its column key:

Column keys can also be wrapped in Key or ExtendedKey:

Take a Tabular object with extended column keys:

Delete a column by specifying its complete extended key:

The last subkey of the extended key can be specified if it uniquely identifies the column:

The action of DeleteColumns is equivalent to Part extraction of the remaining columns:

Deleting an empty list of columns returns the original object:

DeleteColumns is a special version of TransformColumns:

Delete the selected column using DeleteColumns:

Use TransformColumns to set the selected column to Nothing:

DeleteColumns is a complementary operation to ConstructColumns:

Extract one column:

Take a Tabular object and extract a column:

Delete the same column from the Tabular object:

Use InsertColumns to insert the column after column "a" again, now using key "B":