云数据库 GaussDB-案例:调整查询重写GUC参数rewrite_rule:案例环境准备

时间:2025-01-26 10:48:58

案例环境准备

为了便于规则的使用场景演示,需准备建表语句如下:

--清理环境。DROP SCHEMA IF EXISTS rewrite_rule_guc_test CASCADE;CREATE SCHEMA rewrite_rule_guc_test;SET current_schema=rewrite_rule_guc_test;--创建测试表。CREATE TABLE t(c1 INT, c2 INT, c3 INT, c4 INT);CREATE TABLE t1(c1 INT, c2 INT, c3 INT, c4 INT);CREATE TABLE t2(c1 INT, c2 INT, c3 INT, c4 INT);
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