创建序列
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CREATE SEQUENCE if not exists test_mergetable_id_seqINCREMENT 1MINVALUE 1MAXVALUE 999999999START 1CACHE 1;//或者： create sequence if not exists test_mergetable_id_seq increment by 1 minvalue 1 no maxvalue start with 1; |
指定序列（给表的主键指定创建好的序列）
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alter table test_mergetable alter column "i_id" set default nextval('test_mergetable_id_seq'); |
设置序列自增长从当前最大值开始
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SELECT setval('test_mergetable_id_seq', (SELECT MAX(i_id) FROM test_mergetable));alter sequence test_mergetable_id_seq start with 12; |
删除序列
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drop sequence IF EXISTS test_mergetable_id_seq |
查看序列
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SELECT nextval('test_mergetable_id_seq') |
补充：pgsql的schema对用户授权，单个用户跨schema增删改查操作
--创建用户
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create user user1; |
--修改密码
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alter user report with password 'password'; |
--授权查询权限
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grant usage on schema schema1 to user1;grant usage on schema schema2 to user1; |
修改search_path可跨schema操作
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set search_path = "$user",user1,user2 |
--授权schema:schema1给user1权限 这个权限太大需要慎用
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grant all on schema schema1 to user1; |
--授权schema的表权限给user1 用户权限太多需慎用
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grant all on all tables in schema schema1 to user1; |
--授权schema的表权限给user1 用户权限太多需慎用
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grant all on all tables in schema schema1 to user1; |
--授权某个schema的单个表查权限
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grant select on schema2.table1 to user1; |
--收回所有授权
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revoke all on all tables in schema schema1 from user1; |
--为某个特定用户设置search_path
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alter user user1 set search_path="$user",user1,user2; |
以上为个人经验，希望能给大家一个参考，也希望大家多多支持服务器之家。如有错误或未考虑完全的地方，望不吝赐教。
原文链接：https://blog.csdn.net/fangyu723/article/details/105297255
