[ https://issues.apache.org/jira/browse/SPARK-27949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun resolved SPARK-27949. ----------------------------------- Resolution: Fixed Fix Version/s: 3.0.0 This is resolved via https://github.com/apache/spark/pull/24802 > Support SUBSTRING(str FROM n1 [FOR n2]) syntax > ---------------------------------------------- > > Key: SPARK-27949 > URL: https://issues.apache.org/jira/browse/SPARK-27949 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 3.0.0 > Reporter: Zhu, Lipeng > Assignee: Zhu, Lipeng > Priority: Minor > Fix For: 3.0.0 > > > Currently, function `substr/substring`'s usage is like > `substring(string_expression, n1 [,n2])`. > But, the ANSI SQL defined the pattern for substr/substring is like > `SUBSTRING(str FROM n1 [FOR n2])`. This gap makes some inconvenient when we > switch to the SparkSQL. > - ANSI SQL-92: http://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt > Below are the mainly DB engines to support the ANSI standard for substring. > - PostgreSQL https://www.postgresql.org/docs/9.1/functions-string.html > - MySQL > https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_substring > - Redshift https://docs.aws.amazon.com/redshift/latest/dg/r_SUBSTRING.html > - Teradata > https://docs.teradata.com/reader/756LNiPSFdY~4JcCCcR5Cw/XnePye0Cwexw6Pny_qnxVA -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org