* SMgrRelations that do not have an "owner" are considered to be transient, * and are deleted at end of transaction. */typedef struct SMgrRelationData{/* rlocator is the hashtable lookup key, so it must be first! */RelFileLocatorBackend smgr_rlocator;/* relation physical identifier *//...
ownerId, col_privileges[i], attRelation, old_rel_acl); } } pfree(old_rel_acl); pfree(col_privileges); ReleaseSysCache(tuple); /* prevent error when processing duplicate objects */ CommandCounterIncrement(); } table_close(attRelation, RowExclusiveLock); table_close(relation, RowExclusiveLoc...
所有分区表都从它继承，这个表中没有数据，也不要在这个表上定义任何检查约束及索引，现在我们就先创建这样一张表，但之前先建一个序列：CREATE SEQUENCE "public"."control_alarm_info_uid_seq"INCREMENT 1MINVALUE 1MAXVALUE 99999999START 1CACHE 1;ALTER TABLE "public"."control_alarm_info_uid_seq " OWN...
OWNER TO postgres; 按时间触发,创建n个子表 创建n个子表,每个子表都是继承于父表 由于每个分区表都是从父表继承的,所以分区表不会增加任何字段,下面我们按需求创建4张分区子表,分别用于存放9月、10月、11月和12月的日志数据: create table control_alarm_info_201809 (CHECK (alarm_time >= '2018-09-01...
OWNER TO postgres; 按时间触发,创建n个子表 创建n个子表,每个子表都是继承于父表 由于每个分区表都是从父表继承的,所以分区表不会增加任何字段,下面我们按需求创建4张分区子表,分别用于存放9月、10月、11月和12月的日志数据: create table control_alarm_info_201809 (CHECK (alarm_time >= '2018-09-01...
$ psql -U postgres# 使用postgres用户登录psql(10.16(Ubuntu10.16-0ubuntu0.18.04.1))Type"help"forhelp.postgres=# \l # 查看所有数据库(相当于 show databses)List of databases Name|Owner|Encoding|Collate|Ctype|Access privileges ---+---+---+---+---+--- postgres|postgres|UTF8|en_US.UTF-8...
INSTEAD OF 选项使ORACLE激活触发器,而不执行触发事件。只能对视图和对象视图建立INSTEAD OF触发器,而不能对表、模式和数据库建立INSTEAD OF 触发器。 FOR EACH ROW选项说明触发器为行触发器。行触发器和语句触发器的区别表现在:行触发器要求当一个DML语句操走影响数据库中的多行数据时,对于其中的每个数据行,只要...
oid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | reltablespace | relpages | reltuples | relallvisible | reltoastrelid | relhasindex | relisshared | relpersistence | relkind | relnatts | relchecks | relhasrules | relhastriggers | relhassubclass...
countries ( name, alpha_2, alpha_3, numeric_3, iso_3166_2, region, sub_region, intermediate_region, region_code, sub_region_code, intermediate_region_code ) from '/var/lib/postgresql/data/countries.csv' delimiter ',' csv header; -- Check that the data got loaded into the table ok....
# 使用yum安装wget,再使用wget来下载postgres的V15.7的源码yum -y install wget wget https://ftp.postgresql.org/pub/source/v15.7/postgresql-15.7.tar.gz --no-check-certificate 2.2.3 解压源码 tar -zxvf postgresql-15.7.tar.gzcdpostgresql-15.7 ...