dalongliu created FLINK-26940:
---------------------------------
Summary: Add SUBSTRING_INDEX supported in SQL & Table API
Key: FLINK-26940
URL: https://issues.apache.org/jira/browse/FLINK-26940
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: dalongliu
Fix For: 1.16.0
Returns the substring of {{expr}} before {{count}} occurrences of the delimiter
{{{}delim{}}}.
Syntax:
{code:java}
substring_index(expr, delim, count){code}
Arguments:
* {{{}expr{}}}: A STRING or BINARY expression.
* {{{}delim{}}}: An expression matching the type of {{expr}} specifying the
delimiter.
* {{{}count{}}}: An INTEGER expression to count the delimiters.
Returns:
The result matches the type of {{{}expr{}}}.
If {{count}} is positive, everything to the left of the final delimiter
(counting from the left) is returned.
If {{count}} is negative, everything to the right of the final delimiter
(counting from the right) is returned.
Examples:
{code:java}
> SELECT substring_index('www.apache.org', '.', 2);
www.apache {code}
See more:
* [Hive|https://cwiki.apache.org/confluence/display/hive/languagemanual+udf]
* [Databricks SQL
|https://docs.databricks.com/spark/latest/spark-sql/language-manual/functions/substring_index.html]
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
