ES|QL TO_UNSIGNED_LONG function
field-
Input value. The input can be a single- or multi-valued column or an expression.
Converts an input value to an unsigned long value. If the input parameter is of a date type, its value will be interpreted as milliseconds since the Unix epoch, converted to unsigned long. Boolean true will be converted to unsigned long 1, false to 0.
| field | result |
|---|---|
| boolean | unsigned_long |
| date | unsigned_long |
| double | unsigned_long |
| integer | unsigned_long |
| keyword | unsigned_long |
| long | unsigned_long |
| text | unsigned_long |
| unsigned_long | unsigned_long |
ROW str1 = "2147483648", str2 = "2147483648.2", str3 = "foo"
| EVAL long1 = TO_UNSIGNED_LONG(str1), long2 = TO_ULONG(str2), long3 = TO_UL(str3)
| str1:keyword | str2:keyword | str3:keyword | long1:unsigned_long | long2:unsigned_long | long3:unsigned_long |
|---|---|---|---|---|---|
| 2147483648 | 2147483648.2 | foo | 2147483648 | 2147483648 | null |
Note that in this example, the last conversion of the string isn’t possible.
When this happens, the result is a null value. In this case a Warning header is added to the response.
The header will provide information on the source of the failure:
"Line 1:133: evaluation of [TO_UL(str3)] failed, treating result as null. Only first 20 failures recorded."
A following header will contain the failure reason and the offending value:
`"java.lang.NumberFormatException: Character f is neither a decimal digit number, decimal point,
- "nor "e" notation exponential mark."`