Add support for CONCAT_WS #500
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Signed-off-by: bake <bake@192k.pw>
README.md
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| - Date and Timestamp functions: `YEAR(date)`, `MONTH(date)`, `DAY(date)`, `HOUR(date)`, `MINUTE(date)`, `SECOND(date)`, `DAYOFYEAR(date)`. | ||
| - `ARRAY_LENGTH(json)`: If the json representation is an array, this function returns its size. | ||
| - `SPLIT(str,sep)`: Receives a string and a separator and returns the parts of the string split by the separator as a JSON array of strings. | ||
| - `CONCAT(...)`: Concatenate any group of fields into a single string. | ||
| - `CONCAT_WS(sep, ...)`: Concatenate any group of fields into a single string separated by the first field. |
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Probably worth mentioning that null arguments are skipped and only returns null if sep is null.
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Thank you!
"Returns null if the separator is null. Following null fields are skipped." - Would this be ok?
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Lets copy paste from mysql docs:
... stands for Concatenate With Separator and is a special form of CONCAT(). The first argument is the separator for the rest of the arguments. The separator is added between the strings to be concatenated. The separator can be a string, as can the rest of the arguments. If the separator is NULL, the result is NULL.
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Sorry, I only just saw the comment. The descriptions now come from MySQLs docs.
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Please sign a PR. |
Signed-off-by: bake <bake@192k.pw>
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Signed-off-by: bake <bake@192k.pw>
Add support for
CONCAT_WS. Other thanCONCAT, it returnsnullonly if the separator isnull.nullfields are skipped.