云数据库 GAUSSDB-案例:使用DN Gather减少计划中的Stream节点:案例环境准备
时间:2025-04-10 19:23:07
案例环境准备
为了便于案例演示,需准备建表语句如下:
--清理环境 DROP SCHEMA IF EXISTS dn_gather_test CASCADE; CREATE SCHEMA dn_gather_test; SET current_schema=dn_gather_test; --创建测试表 CREATE TABLE t1(a INT, b INT, c INT, d INT); CREATE TABLE t2(a INT, b INT, c INT, d INT); CREATE TABLE t3(a INT, b INT, c INT, d INT); CREATE TABLE t4(a INT, b INT, c INT, d INT);
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