PostgreSQL 序列(Sequence) 基本操作 --新增序列CREATESEQUENCE xxx_id_seq INCREMENT1-- 一次加多少 MINVALUE 1 -- 最小值 START 1 --从多少开始 CACHE 1 CYCLE;--指定表使用altertablexxx_tablealtercolumnidsetDEFAULTnextval('xxx_id_seq')--查询序列SELECTnextval('xxx_id_seq');--删除序列DROPSEQUENCE x...
createsequenceifnotexists test_mergetable_id_seq incrementby1 minvalue 1nomaxvalue startwith1; 2、指定序列(给表的主键指定创建好的序列) alter table test_mergetable alter column "i_id" set default nextval('test_mergetable_id_seq'); 3、设置序列自增长从当前最大值开始 SELECT setval('test_merge...
1、Sequences 名称: mytable_myid_seq 2、主键名 myid 3、模式名 gys 图形pgadmin管理:在pgadmin中,我们可以在sequences上右键,create -> sequences OK了,生成的SQL CREATE SEQUENCE gys.mytable_myid_seq INCREMENT 1 START 1 MINVALUE 1 MAXVALUE 99999999 CACHE 1; ALTER SEQUENCE gys.mytable_myid_seq O...
ALTER SEQUENCE name SET SCHEMA new_schema 1. 2. 3. 4. 5. 6. 7. 8. 9. 实例: david=# truncate tbl_xulie; TRUNCATE TABLE david=# alter sequence tbl_xulie_id_seq restart with 0; ERROR: RESTART value (0) cannot be less than MINVALUE (1) david=# alter sequence tbl_xulie_id_se...
CREATE SERVER _server_name_ [ TYPE '_server_type_' ] [ VERSION '_server_version_' ] FOREIGN DATA WRAPPER _fdw_name_ [ OPTIONS ( _option_ '_value_' [, ... ] ) ]CREATE SEQUENCE定义一个新序列发生器。CREATE [ TEMPORARY | TEMP ] SEQUENCE name [ INCREMENT [ BY ] increment ] [ ...
同时重置自增值 -- 或者,如果你不想清空表,但只想重置自增值,可以使用以下方法...auto_increment_value = 1; ALTER TABLE questions AUTO_INCREMENT = @auto_increment_value; 注意:TRUNCATE TABLE 会删除表中的所有数据并重置自增值...PostgreSQL 在 PostgreSQL 中,你可以通过 ALTER SEQUENCE 语句来...
command (SQL or internal) and exit -d, --dbname=DBNAME database name to connect to (default: "postgres") -f, --file=FILENAME execute commands from file, then exit -l, --list list available databases, then exit -v, --set=, --variable=NAME=VALUE set psql variable NAME to VALUE (...
Select Into & Create table as–shows you how to create a new table from the result set of a query. Auto-increment column with SERIAL – uses SERIAL to add an auto-increment column to a table. Sequences –introduce you to sequences and describe how to use a sequence to generate a ...
Description:changethedefinitionofatablespaceSyntax:ALTERTABLESPACEnameRENAMETOnew_nameALTERTABLESPACEnameOWNERTO{new_owner|CURRENT_ROLE|CURRENT_USER|SESSION_USER}ALTERTABLESPACEnameSET(tablespace_option=value[,...])ALTERTABLESPACEnameRESET(tablespace_option[,...])postgres=#altertablespacetest_tbsrenametoprod_...
# name = value # ("="是可选的.)可以使用空格.注释是在一行的任何地方用"#"开头.参数名和允许值的完整列表可以在PostgreSQL文档中找到. # 该文件中显示的注释化设置表示默认值.重新注释设置不足以将其还原为默认值;您需要重新加载服务器. # # 此文件在服务器启动时以及服务器接收到SIGHUP信号时读取.如果...