including qualified names. We also allow type modifiers. To avoid parsing conflicts against function invocations, the modifiers have to be shown as expr_list here, but parse analysis will only accept constants for them. GenericType涵盖了所有没有标准规定的特殊语法的类型名称,包括限定名称。我们...
TYPE mood RENAME VALUE 'ok' TO 'fine'; mydb=# \dT+ mood; List of data types Schema | Name | Internal name | Size | Elements | Owner | Access privileges | Description ---+---+---+---+---+---+---+--- public | mood | mood | 4 | sad +| postgres | | | | | | fi...
{ column_name data_type [ COLLATE collation ] [ column_constraint [ ... ] ] | table_constraint | LIKE source_table [ like_option ... ] } [, ... ] ] ) [ INHERITS (parent_table[, ... ] ) ] [ PARTITION BY { RANGE | LIST | HASH } ( { column_name | ( expression ) } ...
psql (9.3.9) Type "help" for help. test=# CREATE TYPE user_enum AS ENUM ('enum1', 'enum2', 'enum3'); CREATE TYPE test=# \dT List of data types Schema | Name | Description ---+---+--- public | user_enum | (1 row) test=# select oid from pg_type where typname='user_...
CREATE OR REPLACE VIEW gettreelistvw AS SELECT "CRM".groupid, 'pointrewarding'::text AS applicationid, "CM".menuid, "CM".menuname, "CM".levelstructure, "CM".moduleid, "CM".haschild, "CM".installed FROM core_capabilitymap "CRM" JOIN core_menus "CM" ON "CRM".menuid::text = "C...
\deu[+] [PATTERN] list user mappings \dew[+] [PATTERN] list foreign-data wrappers \df[antw][S+] [PATRN] list [only agg/normal/trigger/window] functions \dF[+] [PATTERN] list text search configurations \dFd[+] [PATTERN] list text search dictionaries ...
例如,假设我有一个数据格式列表,并且我想要类似于 df = pandas.fullConcat(dfList) 其中,df.index应该是dfList、('outer' join)和df.columns中索引的结合,而df.columns也应该是dfList中列的联合。我认为所有的concat、join和merge方法都只是在索引或列上进行连接。我想解决方法是堆栈/解堆栈还是reset_index?我...
postgres=# \df acl*Listof functionsSchema|Name|Resultdata type|Argumentdata types|Type---+---+---+---+---pg_catalog|aclcontains|boolean|aclitem[],aclitem|func pg_catalog|acldefault|aclitem[]|"char",oid|func pg_catalog|aclexplode|SETOFrecord|acl aclitem[],OUTgrantor oid,OUTgrantee oi...
x postgres=# \df+ convert List of functions Schema | Name | Result data type | Argument data types | Type | Volatility | Parallel | Owner | Security | Access privileges | Language | Source code | Description ---+---+---+---+---+---+---+---+---+---+---+---+---...
postgres=# select current_database(); current_database --- postgres 2.查看用户信息 可以使用\dn来得到schema的相关信息,在PG里面的schema和user还是有一些差别,在其他数据库schema基本就是user了。 postgres-# \dn List of schemas Name | Owner ---+--...