19kka opened a new pull request #25450: [SPARK-23793][SQL]Handle database names in spark.udf.register() URL: https://github.com/apache/spark/pull/25450 ## What changes were proposed in this pull request? https://issues.apache.org/jira/browse/SPARK-23793 Current version: ```scala spark.udf.register("testdb.testfunc", (a: Int) => a + 1) sql("select testdb.testfunc(1)").show //throw NoSuchFunctionException //org.apache.spark.sql.AnalysisException: Undefined function: 'testfunc'. This function is neither a registered temporary function nor a permanent function registered in the database 'testdb'.; line 1 pos 7 ``` Parser the register function name and database name before `createOrReplaceTempFunction` after this patch, the result will be correctly and has no Exception ## How was this patch tested? Passed existing tests. Manually test for performance.
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