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13 lines
774 B
Plaintext
13 lines
774 B
Plaintext
{
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"name": "nullif",
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"type": "function",
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"groups": ["Conditionals"],
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"description": "Returns a null value if value1 equals value2; otherwise it returns value1. This can be used to conditionally substitute values with NULL.",
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"arguments": [ {"arg":"value1", "description": "The value that should either be used or substituted with NULL."},
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{"arg":"value2", "description": "The control value that will trigger the NULL substitution."}],
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"examples": [ { "expression":"nullif('(none)', '(none)')", "returns":"NULL"},
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{ "expression":"nullif('text', '(none)')", "returns":"'text'"},
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{ "expression":"nullif(\"name\", '')", "returns":"NULL, if name is an empty string (or already NULL), the name in any other case."} ]
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}
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