182 lines
7.8 KiB
SQL
182 lines
7.8 KiB
SQL
drop schema if exists dependent_view cascade;
|
|
create schema dependent_view;
|
|
set current_schema = dependent_view;
|
|
|
|
-- test 1：视图
|
|
-- 创建基表
|
|
DROP TABLE IF EXISTS base_table;
|
|
CREATE TABLE base_table
|
|
(
|
|
base_table_id INTEGER,
|
|
base_table_field NUMERIC(10,4)
|
|
);
|
|
-- 插入数据
|
|
insert into base_table values (1,1);
|
|
insert into base_table values (2,2);
|
|
|
|
-- 创建第一层直接引用表字段的视图对象master_viewx
|
|
DROP VIEW IF EXISTS master_view1;
|
|
CREATE OR REPLACE VIEW master_view1 AS
|
|
SELECT
|
|
base_table_id AS id,
|
|
base_table_field AS field
|
|
FROM base_table;
|
|
|
|
DROP VIEW IF EXISTS master_view2;
|
|
CREATE OR REPLACE VIEW master_view2 AS
|
|
SELECT
|
|
base_table_field AS field
|
|
FROM base_table;
|
|
|
|
DROP VIEW IF EXISTS master_view3;
|
|
CREATE OR REPLACE VIEW master_view3 AS
|
|
SELECT
|
|
base_table_id AS id
|
|
FROM base_table;
|
|
-- 创建第二层间接引用表字段的视图对象dependent_viewx
|
|
DROP VIEW IF EXISTS dependent_view1;
|
|
CREATE OR REPLACE VIEW dependent_view1 AS
|
|
SELECT
|
|
id AS dependent_id,
|
|
field AS dependent_field
|
|
FROM master_view1;
|
|
|
|
DROP VIEW IF EXISTS dependent_view2;
|
|
CREATE OR REPLACE VIEW dependent_view2 AS
|
|
SELECT
|
|
id AS dependent_id
|
|
FROM master_view1;
|
|
|
|
DROP VIEW IF EXISTS dependent_view3;
|
|
CREATE OR REPLACE VIEW dependent_view3 AS
|
|
SELECT
|
|
field AS dependent_field
|
|
FROM master_view1;
|
|
|
|
DROP VIEW IF EXISTS dependent_view4;
|
|
CREATE OR REPLACE VIEW dependent_view4 AS
|
|
SELECT
|
|
field AS dependent_field1
|
|
FROM master_view2;
|
|
|
|
DROP VIEW IF EXISTS dependent_view5;
|
|
CREATE OR REPLACE VIEW dependent_view5 AS
|
|
SELECT
|
|
id AS dependent_id
|
|
FROM master_view3;
|
|
-- 创建第三层间接引用表字段的视图对象second_dependent_viewx
|
|
DROP VIEW IF EXISTS second_dependent_view1;
|
|
CREATE OR REPLACE VIEW second_dependent_view1 AS
|
|
SELECT
|
|
dependent_id AS sec_dependent_id,
|
|
dependent_field AS sec_dependent_field
|
|
FROM dependent_view1;
|
|
|
|
DROP VIEW IF EXISTS second_dependent_view2;
|
|
CREATE OR REPLACE VIEW second_dependent_view2 AS
|
|
SELECT
|
|
dependent_id AS sec_dependent_id
|
|
FROM dependent_view2;
|
|
|
|
DROP VIEW IF EXISTS second_dependent_view3;
|
|
CREATE OR REPLACE VIEW second_dependent_view3 AS
|
|
SELECT
|
|
dependent_field AS sec_dependent_field
|
|
FROM dependent_view3;
|
|
|
|
-- 初始valid字段为true
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
|
|
-- 修改表字段类型，预期视图失效，查询无效视图成功
|
|
ALTER TABLE base_table ALTER COLUMN base_table_field TYPE VARCHAR(32);
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from second_dependent_view3;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 修改表字段长度，预期视图失效，查询无效视图成功
|
|
ALTER TABLE base_table ALTER COLUMN base_table_field TYPE VARCHAR(64);
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from second_dependent_view3;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 删除表字段，预期视图失效，查询无效视图报错
|
|
ALTER TABLE base_table DROP COLUMN base_table_field;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from second_dependent_view3;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 重新插入表字段，预期失效的视图被查询时恢复有效，引用链上的父视图也恢复有效状态
|
|
ALTER TABLE base_table ADD base_table_field INTEGER;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from second_dependent_view3;
|
|
select * from dependent_view3;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 删除整个表，预期报错
|
|
DROP TABLE base_table;
|
|
-- 删除整个表，预期成功
|
|
DROP TABLE base_table CASCADE;
|
|
|
|
-- test2：物化视图
|
|
DROP TABLE IF EXISTS base_table;
|
|
CREATE TABLE base_table
|
|
(
|
|
base_table_id INTEGER,
|
|
base_table_field NUMERIC(10,4)
|
|
);
|
|
|
|
-- 插入数据
|
|
insert into base_table values (1,1);
|
|
insert into base_table values (2,2);
|
|
|
|
DROP MATERIALIZED VIEW IF EXISTS master_view1;
|
|
CREATE MATERIALIZED VIEW master_view1 AS
|
|
SELECT
|
|
base_table_id AS id,
|
|
base_table_field AS field
|
|
FROM base_table;
|
|
|
|
-- 插入新数据
|
|
insert into base_table values (3,3);
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
|
|
-- 重命名表字段，预期修改后查询到原数据
|
|
ALTER TABLE base_table rename COLUMN base_table_id to id;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from master_view1;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 修改表字段类型，预期修改后查询到原数据
|
|
ALTER TABLE base_table ALTER COLUMN id TYPE VARCHAR(32);
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from master_view1;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 删除表字段，预期修改后查询到原数据
|
|
ALTER TABLE base_table DROP COLUMN base_table_field;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from master_view1;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
-- 刷新物化视图，预期报错
|
|
REFRESH MATERIALIZED VIEW master_view1;
|
|
|
|
-- 重新添加表字段，刷新物化视图，预期查询到同步后数据
|
|
ALTER TABLE base_table ADD base_table_field INTEGER;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
REFRESH MATERIALIZED VIEW master_view1;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
select * from master_view1;
|
|
select relname, object_type, valid from pg_object join pg_class on object_oid=oid and relnamespace = (select Oid from pg_namespace where nspname='dependent_view') order by object_oid;
|
|
\d base_table
|
|
|
|
--- clean
|
|
drop schema dependent_view cascade;
|