Drop the key-value pairs of an association that have the given keys:

Drop a single key-value pair from an association:

Equivalently, give the key directly:

Keys not present in the association will be ignored:

Drop zero key-value pairs:

Use the operator form of KeyDrop:

Drop key-value pairs from several associations in a list:

This is equivalent to mapping over the list of associations:

Drop the rules having the given keys:

Drop a single rule from a list of rules:

Equivalently, give the key directly:

Keys not present in the list of rules will be ignored:

Drop zero rules:

Use the operator form of KeyDrop:

Drop rules from several lists of rules:

This is equivalent to mapping over the list of lists of rules:

KeyDrop can act on lists containing both associations and lists of rules, returning a list of associations:

This is a Tabular object with three columns:

Form another Tabular object by dropping the specified columns:

Drop all columns, returning a result with zero columns:

Construct a Tabular object with extended column keys:

Drop the specified columns:

The key "c" uniquely identifies a column:

The key "a" does not uniquely identify a column, and therefore no column is dropped:

Take a Dataset object of depth 2 with three columns:

Construct another Dataset object by dropping the specified columns:

Drop all columns, returning a result with zero columns:

KeyDrop can act on Dataset objects of depth 1 whose normal form is an association: