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Kurt Young commented on FLINK-14924: ------------------------------------ we met this problem before in blink, you can check this codes: [https://github.com/apache/flink/blob/blink/flink-java/src/main/java/org/apache/flink/api/java/io/AbstractRowCsvInputFormat.java] we added an `emptyColumnAsNull` option in csv input format in blink. > CsvTableSource can not config empty column as null > -------------------------------------------------- > > Key: FLINK-14924 > URL: https://issues.apache.org/jira/browse/FLINK-14924 > Project: Flink > Issue Type: Bug > Components: Table SQL / API > Affects Versions: 1.9.1 > Reporter: Leonard Xu > Priority: Major > Fix For: 1.10.0 > > > CsvTableSource can not config empty column as null, > and convert to empty string by default. > -- This message was sent by Atlassian Jira (v8.3.4#803005)