/ ./kysely-db.d.ts import type { ColumnType } from 'kysely';export type Generated = T extends ColumnType ? ColumnType : ColumnType ;export interface Users { country: string | null; email: string; first_name: string; id: Generated ; last_name: string;}export interface DB { ...
ERROR: cannot alter type of a column used by a view or rule DETAIL: rule _RETURN on view vw_t depends on column "t" > ALTER TABLE t ALTER COLUMN pk TYPE bigint; ERROR: cannot alter type of a column used by a view or rule DETAIL: rule _RETURN on view vw_t depends on column ...
hrdb=# COMMENTONCOLUMNtab_num.v5IS'大整型最小范围'; COMMENT hrdb=# COMMENTONCOLUMNtab_num.v6IS'大整型最大范围'; COMMENT hrdb=#--描述数据类型 hrdb=# \d+ tab_num Table"public.tab_num" Column| Type | Collation | Nullable |Default| Storage | Stats target | Description ---+---+---+...
Column | Type | Modifiers ---+---+--- id | integer | info | text | Foreign-key constraints: "tbl1_id_fkey" FOREIGN KEY (id) REFERENCES tbl(id) postgres=# \di List of relations Schema | Name | Type | Owner | Table ---+---+---+---+--- public | tbl_pke...
postgres=# create index idx_test_id on test(id); CREATE INDEX postgres=# \d test Table "public.test" Column | Type | Collation | Nullable | Default ---+---+---+---+--- id | integer | | | name | text | | | Indexes: "idx_test_id" btree (id) postgres=# explain analyze...
CREATE[ORREPLACE]FUNCTIONname([[argmode][argname]argtype[{DEFAULT|=}default_expr][,...]])[RETURNSrettype|RETURNSTABLE(column_name column_type[,...])]{LANGUAGElang_name|TRANSFORM{FORTYPEtype_name}[,...]|WINDOW|IMMUTABLE|STABLE|VOLATILE|[NOT]LEAKPROOF|CALLEDONNULLINPUT|RETURNSNULLONNULLINPUT|...
1、serial类型,自动创建一个序列,同时将列设置为INT,默认值设置为nextval('序列')。 create table test(id serial, info text); postgres=# \d+ testTable"public.test"Column |Type|Collation|Nullable|Default|Storage|Stats target|Description ---+---+---+---+---+---+---+--- id|integer||not...
Ifthecast is marked AS ASSIGNMENTthenitcan be invoked implicitly when assigningavaluetoacolumnofthetarget data type. For example, supposing that foo.f1 isacolumnoftypetext,then: INSERT INTO foo (f1) VALUES (42); will be allowedifthecastfromtypeintegertotypetextis marked AS ASSIGNMENT, ...
test=# \d+ student; Table "public.student" Column | Type | Collation | Nullable | Default | Storage | Stats target | Description ---+---+---+---+---+---+---+--- id | integer | | not null | nextval('student_id_seq'::regclass) | plain | | name | character varying(10...
Performance: Since type is uniform in a column, the values stored can be processed quickly, which enhances performance A wide set of Data Types are available in PostgreSQL. Besides, users can create their own custom data type using "CREATE TYPE" command....