Liu created FLINK-39064:
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Summary: Add built-in REGEXP_SPLIT function to split string by
regular expression pattern
Key: FLINK-39064
URL: https://issues.apache.org/jira/browse/FLINK-39064
Project: Flink
Issue Type: Improvement
Reporter: Liu
Add a new built-in SQL function REGEXP_SPLIT(string, regex) that splits a
string by a regular expression pattern and returns an array of substrings. This
complements the existing SPLIT(string, delimiter) function (introduced in
FLINK-32706) by supporting regex-based splitting.
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