dalongliu created FLINK-26944:
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Summary: Add ADD_MONTHS supported in SQL and Table API
Key: FLINK-26944
URL: https://issues.apache.org/jira/browse/FLINK-26944
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: dalongliu
Fix For: 1.16.0
Returns the date that is {{numMonths}} after {{{}startDate{}}}.
Syntax:
{code:java}
add_months(startDate, numMonths) {code}
Arguments:
* {{{}startDate{}}}: A DATE expression.
* {{{}numMonths{}}}: An integral number.
Returns:
A DATE. If the result exceeds the number of days of the month the result is
rounded down to the end of the month. If the result exceeds the supported range
for a date an overflow error is reported.
Examples:
{code:java}
> SELECT add_months('2016-08-31', 1);
2016-09-30
> SELECT add_months('2016-08-31', -6);
2016-02-29 {code}
See more:
*
[Spark|https://spark.apache.org/docs/latest/sql-ref-functions-builtin.html#date-and-timestamp-functions]
* [Hive|https://cwiki.apache.org/confluence/display/hive/languagemanual+udf]
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