Implement empty function #7290
Description
Is your feature request related to a problem or challenge?
Summary
| Characteristic | Description |
|---|---|
| Function name: | empty |
| Aliases: | - |
| Original function?: | No |
| Function Description: | ClickHouse: Returns 1 for an empty array or 0 for a non-empty array. |
| Sources: | Concept ClickHouse |
Examples:
SELECT empty([])
Query id: 42b6e940-aada-4bfb-afb8-77d8288a0335
┌─empty([])─┐
│ 1 │
└───────────┘
SELECT empty([1, 2, 3])
Query id: 3a22e137-ffe4-4951-bc6e-27d85a150c95
┌─empty([1, 2, 3])─┐
│ 0 │
└──────────────────┘
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Describe alternatives you've considered
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Additional context
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