forked from docs/doc-exports
Yang, Tong
48706b7552
Reviewed-by: Kacur, Michal <michal.kacur@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
1.3 KiB
1.3 KiB
UDF Java and SQL Examples
UDF Java Example
package com.xxx.udf;
import org.apache.flink.table.functions.ScalarFunction;
public class UdfClass_UDF extends ScalarFunction {
public int eval(String s) {
return s.length();
}
}
UDF SQL Example
CREATE TEMPORARY FUNCTION udf as 'com.xxx..udf.UdfClass_UDF';
CREATE TABLE udfSource (a VARCHAR) WITH ('connector' = 'datagen','rows-per-second'='1');
CREATE TABLE udfSink (a VARCHAR,b int) WITH ('connector' = 'print');
INSERT INTO
udfSink
SELECT
a,
udf(a)
FROM
udfSource;
Parent topic: Managing UDFs