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MAP_CONTAINS_KEY

Introduced or updated: v1.2.464

Determines whether the specified MAP contains the specified key.

Syntax​

MAP_CONTAINS_KEY( <map>, <key> )

Arguments​

ArgumentsDescription
<map>The map to be searched.
<key>The key to find.

Return Type​

Boolean.

Examples​

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

SELECT MAP_CONTAINS_KEY({'a':1,'b':2,'c':3}, 'x');
┌────────────────────────────────────────────┐
│ map_contains_key({'a':1,'b':2,'c':3}, 'x') │
├────────────────────────────────────────────┤
│ false │
└────────────────────────────────────────────┘
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