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14 lines
860 B
Plaintext
14 lines
860 B
Plaintext
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{
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"function": "coalesce",
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"description": "Returns the first non-NULL value from the expression list.<br>This function can take any number of arguments.",
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"variableLenArguments": true,
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"arguments": [ {"arg":"expression1", "syntaxOnly": true},
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{"arg":"expression2", "syntaxOnly": true},
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{"arg":"expression", "descOnly": true, "description":"any valid expression or value, irregardless of type."}],
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"examples": [ { "expression":"coalesce(NULL, 2)", "returns":"2"},
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{ "expression":"coalesce(NULL, 2, 3)", "returns":"2"},
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{ "expression":"coalesce(7, NULL, 3*2)", "returns":"7"},
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{ "expression":"coalesce(\"fieldA\", \"fallbackField\", 'ERROR')", "returns":"value of fieldA if it is non-NULL else the value of \"fallbackField\" or the string 'ERROR' if both are NULL"} ]
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}
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