Input
The input table, ville_tempdata, is a collection of temperature readings for two cities, Nashville and Knoxville, in the state of Tennessee. In the column of packed data, the delimiter comma (,) separates the virtual columns. The last row contains invalid data.
sn | packed_temp_data |
---|---|
10 | Nashville,Tennessee,35.1 |
11 | Nashville,Tennessee,36.2 |
12 | Nashville,Tennessee,34.5 |
13 | Nashville,Tennessee,33.6 |
14 | Nashville,Tennessee,33.1 |
15 | Nashville,Tennessee,33.2 |
16 | Nashville,Tennessee,32.8 |
17 | Nashville,Tennessee,32.4 |
18 | Nashville,Tennessee,32.2 |
19 | Nashville,Tennessee,32.4 |
20 | Thisisbaddata |
SQL Call
Because comma is the default delimiter, the Delimiter syntax element is optional.
SELECT * FROM Unpack_MLE ( ON ville_tempdata USING TargetColumn ('packed_temp_data') OutputColumns ('city','state','temp_F') OutputDataTypes ('varchar(9)','varchar(9)','float') Delimiter (',') Regex ('(.*)') RegexSet (1) IgnoreInvalid ('true') ) AS dt ORDER BY sn;
Output
Because of IgnoreInvalid ('true'), the function did not fail when it encountered the row with invalid data, but it did not output that row.
city state temp_f sn --------- --------- ------ -- nashville tennessee 35.1 10 nashville tennessee 36.2 11 nashville tennessee 34.5 12 nashville tennessee 33.6 13 nashville tennessee 33.1 14 knoxville tennessee 33.2 15 knoxville tennessee 32.8 16 knoxville tennessee 32.4 17 knoxville tennessee 32.2 18 knoxville tennessee 32.4 19
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