Table Sample
This documentation is for an unreleased version of Apache Flink. We recommend you use the latest stable version.

Table Sample #

説明 #

The TABLESAMPLE statement is used to sample rows from the table.

構文 #

TABLESAMPLE ( num_rows ROWS )
Note: Currently, only sample specific number of rows is supported.

パラメータ #

  • num_rows ROWS

    num_rows is a constant positive to specify how many rows to sample.

#

SELECT * FROM src TABLESAMPLE (5 ROWS)
inserted by FC2 system