`在oracle sql中显示“创建表”等效项_Sql_Oracle

`在oracle sql中显示“创建表”等效项

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`在oracle sql中显示“创建表”等效项,sql,oracle,Sql,Oracle,在MySql中，您可以通过show create table\u name查看表定义（列及其数据类型等） oracle sql有类似的功能吗？使用：将向您显示列，但遗憾的是，使用标准oracle工具无法使用create语句。如果您询问SQL*Plus命令（show create table\u name似乎不是SQL语句），可以使用desc命令 SQL> desc emp Name Null? Type

在MySql中，您可以通过

show create table\u name

查看表定义（列及其数据类型等）

oracle sql有类似的功能吗？

使用：

将向您显示列，但遗憾的是，使用标准oracle工具无法使用create语句。

如果您询问SQL*Plus命令（

show create table\u name

似乎不是SQL语句），可以使用

desc

命令

SQL> desc emp
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 EMPNO                                     NOT NULL NUMBER(4)
 ENAME                                              VARCHAR2(10)
 JOB                                                VARCHAR2(9)
 MGR                                                NUMBER(4)
 HIREDATE                                           DATE
 SAL                                                NUMBER(7,2)
 COMM                                               NUMBER(7,2)
 DEPTNO                                             NUMBER(2)

如果确实需要SQL语句，可以使用

dbms\u元数据

包

  1  select dbms_metadata.get_ddl( 'TABLE', 'EMP', 'SCOTT' )
  2*   from dual
SQL> /

DBMS_METADATA.GET_DDL('TABLE','EMP','SCOTT')
--------------------------------------------------------------------------------

  CREATE TABLE "SCOTT"."EMP"
   (    "EMPNO" NUMBER(4,0),
        "ENAME" VARCHAR2(10),
        "JOB" VARCHAR2(9),
        "MGR" NUMBER(4,0),
        "HIREDATE" DATE,
        "SAL" NUMBER(7,2),
        "COMM" NUMBER(7,2),
        "DEPTNO" NUMBER(2,0),
         CONSTRAINT "PK_EMP" PRIMARY KEY ("EMPNO")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DE
FAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS"
  ALTER INDEX "SCOTT"."PK_EMP"  UNUSABLE ENABLE,
         CONSTRAINT "FK_DEPTNO" FOREIGN KEY ("DEPTNO")
          REFERENCES "SCOTT"."DEPT" ("DEPTNO") ENABLE
   ) SEGMENT CREATION IMMEDIATE
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DE
FAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS"
  CACHE

根据所使用的工具，可能需要先运行

set long 10000

，这会告诉SQL*Plus显示所选任何LOB的前10000字节。如果您的DDL较长，请设置一个较大的值。

如果您使用的是PL/SQL Developer；右键单击表，选择视图，在视图窗口的右下角单击“查看SQL”按钮。

DDL

对我有效，更简单的是，您只需编写

DDL（模式所有者）。（表名）

…例如

DDL HR.LOCATIONS

…

HR

是架构，

LOCATION

是表名……确保将

架构

名和表都写在大写字母中，输出将显示在此处

SQL> set long 1000
SQL> set pagesize 0
SQL> select DBMS_METADATA.GET_DDL('TABLE','TABLE NAME'[,'SCHEMA']) from DUAL

CREATE TABLE "HR"."LOCATIONS" 
(   "LOCATION_ID" NUMBER(4,0), 
"STREET_ADDRESS" VARCHAR2(40), 
"POSTAL_CODE" VARCHAR2(12), 
"CITY" VARCHAR2(30) CONSTRAINT "LOC_CITY_NN" NOT NULL ENABLE, 
"STATE_PROVINCE" VARCHAR2(25), 
"COUNTRY_ID" CHAR(2), 
 CONSTRAINT "LOC_ID_PK" PRIMARY KEY ("LOCATION_ID")
 USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE 
STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE"  ENABLE, 
 CONSTRAINT "LOC_C_ID_FK" FOREIGN KEY ("COUNTRY_ID")
  REFERENCES "HR"."COUNTRIES" ("COUNTRY_ID") ENABLE
) SEGMENT CREATION IMMEDIATE 
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS NOLOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
COMMENT ON COLUMN "HR"."LOCATIONS"."LOCATION_ID" IS 'Primary key of 
locations table';
COMMENT ON COLUMN "HR"."LOCATIONS"."STREET_ADDRESS" IS 'Street address 
of an office, warehouse, or production site of a company.
Contains building number and street name';
COMMENT ON COLUMN "HR"."LOCATIONS"."POSTAL_CODE" IS 'Postal code of 
the 
location of an office, warehouse, or production site
of a company. ';
COMMENT ON COLUMN "HR"."LOCATIONS"."CITY" IS 'A not null column that 
shows city where an office, warehouse, or
production site of a company is located. ';
COMMENT ON COLUMN "HR"."LOCATIONS"."STATE_PROVINCE" IS 'State or 
Province where an office, warehouse, or production site of a
company is located.';
COMMENT ON COLUMN "HR"."LOCATIONS"."COUNTRY_ID" IS 'Country where an 
office, warehouse, or production site of a company is
located. Foreign key to country_id column of the countries table.';
COMMENT ON TABLE "HR"."LOCATIONS"  IS 'Locations table that contains 
specific address of a specific office,
warehouse, and/or production site of a company. Does not store 
addresses /
locations of customers. Contains 23 rows; references with the
departments and countries tables. ';
CREATE INDEX "HR"."LOC_CITY_IX" ON "HR"."LOCATIONS" ("CITY") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
CREATE INDEX "HR"."LOC_COUNTRY_IX" ON "HR"."LOCATIONS" ("COUNTRY_ID") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
CREATE INDEX "HR"."LOC_STATE_PROVINCE_IX" ON "HR"."LOCATIONS" 
("STATE_PROVINCE") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;

请注意，表名区分大小写，您需要以大写形式输入表名。

@nightograph问题不要求限制和键；它只要求表定义（列及其数据类型等）。问题是要求与Oracle中的“show create table”等效，DESC不等效，因为“show create”显示键索引，而DESC不要求您在SQL developer中键入此命令？或sql plus。。。还请记住，您必须键入带点的模式名，然后键入表名……例如

ddl HR.EMPLOYEES确保架构名称和表使用大写字母。SQL Developer和它们使用大写字母，但我的表可能是在架构下“其他用户”部分的30个表中的一个下面创建的。是的，请确保您登录的用户是正确的用户，并且有权发出此命令。我需要什么权限？我只有选择性访问权限。我想这回答了7年前的问题。阿赫努克·汗，这并不能回答这个问题。一旦你有足够的钱，你将能够；相反
CREATE TABLE "HR"."LOCATIONS" 
(   "LOCATION_ID" NUMBER(4,0), 
"STREET_ADDRESS" VARCHAR2(40), 
"POSTAL_CODE" VARCHAR2(12), 
"CITY" VARCHAR2(30) CONSTRAINT "LOC_CITY_NN" NOT NULL ENABLE, 
"STATE_PROVINCE" VARCHAR2(25), 
"COUNTRY_ID" CHAR(2), 
 CONSTRAINT "LOC_ID_PK" PRIMARY KEY ("LOCATION_ID")
 USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE 
STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE"  ENABLE, 
 CONSTRAINT "LOC_C_ID_FK" FOREIGN KEY ("COUNTRY_ID")
  REFERENCES "HR"."COUNTRIES" ("COUNTRY_ID") ENABLE
) SEGMENT CREATION IMMEDIATE 
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS NOLOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
COMMENT ON COLUMN "HR"."LOCATIONS"."LOCATION_ID" IS 'Primary key of 
locations table';
COMMENT ON COLUMN "HR"."LOCATIONS"."STREET_ADDRESS" IS 'Street address 
of an office, warehouse, or production site of a company.
Contains building number and street name';
COMMENT ON COLUMN "HR"."LOCATIONS"."POSTAL_CODE" IS 'Postal code of 
the 
location of an office, warehouse, or production site
of a company. ';
COMMENT ON COLUMN "HR"."LOCATIONS"."CITY" IS 'A not null column that 
shows city where an office, warehouse, or
production site of a company is located. ';
COMMENT ON COLUMN "HR"."LOCATIONS"."STATE_PROVINCE" IS 'State or 
Province where an office, warehouse, or production site of a
company is located.';
COMMENT ON COLUMN "HR"."LOCATIONS"."COUNTRY_ID" IS 'Country where an 
office, warehouse, or production site of a company is
located. Foreign key to country_id column of the countries table.';
COMMENT ON TABLE "HR"."LOCATIONS"  IS 'Locations table that contains 
specific address of a specific office,
warehouse, and/or production site of a company. Does not store 
addresses /
locations of customers. Contains 23 rows; references with the
departments and countries tables. ';
CREATE INDEX "HR"."LOC_CITY_IX" ON "HR"."LOCATIONS" ("CITY") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
CREATE INDEX "HR"."LOC_COUNTRY_IX" ON "HR"."LOCATIONS" ("COUNTRY_ID") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;
CREATE INDEX "HR"."LOC_STATE_PROVINCE_IX" ON "HR"."LOCATIONS" 
("STATE_PROVINCE") 
PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT 
FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "EXAMPLE" ;