MAP_DELETE

Introduced or updated: v1.2.547

Returns an existing MAP with one or more keys removed.

Syntax

MAP_DELETE( <map>, <key1> [, <key2>, ... ] )
MAP_DELETE( <map>, <array> )

Arguments

Arguments	Description
<map>	The MAP that contains the KEY to remove.
<keyN>	The KEYs to be omitted from the returned MAP.
<array>	The Array of KEYs to be omitted from the returned MAP.

备注

• The types of the key expressions and the keys in the map must be the same.
• Key values not found in the map will be ignored.

Return Type

Map.

Examples

SELECT MAP_DELETE({'a':1,'b':2,'c':3}, 'a', 'c');
┌───────────────────────────────────────────┐
│ map_delete({'a':1,'b':2,'c':3}, 'a', 'c') │
├───────────────────────────────────────────┤
│ {'b':2}                                   │
└───────────────────────────────────────────┘

SELECT MAP_DELETE({'a':1,'b':2,'c':3}, ['a', 'b']);
┌─────────────────────────────────────────────┐
│ map_delete({'a':1,'b':2,'c':3}, ['a', 'b']) │
├─────────────────────────────────────────────┤
│ {'c':3}                                     │
└─────────────────────────────────────────────┘