Help Center/ Data Lake Insight/ Flink SQL Syntax Reference/ Flink Opensource SQL 1.10 Syntax Reference/ Functions/ Built-In Functions/ Table-Valued Functions/ split_cursor
Updated on 2022-09-15 GMT+08:00
View PDF

split_cursor

The split_cursor function can convert one row of records into multiple rows or convert one column of records into multiple columns. Table-valued functions can only be used in JOIN LATERAL TABLE.

Table 1 split_cursor function

Function

Return Type

Description

split_cursor(value, delimiter)

cursor

Separates the "value" string into multiple rows of strings by using the delimiter.

Example

Input one record ("student1", "student2, student3") and output two records ("student1", "student2") and ("student1", "student3").

create table s1(attr1 string, attr2 string) with (......);
insert into s2 select  attr1, b1 from s1 left join lateral table(split_cursor(attr2, ',')) as T(b1) on true;
Parent topic: Table-Valued Functions