问题
I have a string value in which i might have leading zero's, so i want to remove all leading zeros.
For example:
accNumber = "000340" ---> "340"
Any UDF is available in Hive? can we use regexp_extract
for this?
回答1:
Yes, just use REGEXP_REPLACE().
SELECT some_string,
REGEXP_REPLACE(some_string, "^0+", '') stripped_string
FROM db.tbl
(fixed simple typo with comma)
来源:https://stackoverflow.com/questions/38146780/remove-leading-zeros-using-hiveql