How to View SQL Table Structure in Oracle SQL Developer

SQL query to pull all database table structure in one go?

The answer can be found here. You can query

SELECT * FROM ALL_TAB_COLUMNS

or

SELECT * FROM ALL_TAB_COLS

Difference between ALL_TAB_COLUMNS and ALL_TAB_COLS

How do I write the table structure in Oracle from an existing schema?

Call dbms_metadata in your query on user_tables:

select dbms_metadata.get_ddl('TABLE',table_name,user) 
from   user_tables;

`show create table` equivalent in oracle sql

If you are asking about SQL*Plus commands (show create table table_name doesn't appear to be a SQL statement), you can use the desc command

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)

If you really want a SQL statement, you can use the dbms_metadata package

  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

Depending on the tool you are using, you may need to run set long 10000 first, that tells SQL*Plus to display the first 10,000 bytes of any LOB that is selected. If your DDL is longer, set a larger value.

Is there a way to view relationships in Oracle SQL Developer?

It's not clear if you're looking for a GUI solution, but you can query the information from the dictionary by:

select table_name from user_constraints
where r_constraint_name in
  (select constraint_name 
     from user_constraints
     where constraint_type in ('P','U')
     and table_name = upper('&tableOfInterest')
  ) 

Oracle : which SQL command to get all details about a table?

I do something similar. I read those things from a SQL Server over OPENQUERY statements directly from Oracle DBs and save results into SQL Server tables to allow analysis of historic comparison schema information and changes.

So what you have to do with the resultsets of the following queries is to store them (regulary) somehow and add some kind of unique / primary key or timestamp to it, in order to distinguish between your different scans.

Leaving away the SQL Server specific code stuff, those are the basic oracle sql queries I use so far:

--Tables
SELECT table_name, owner, Tablespace_name, Num_Rows 
FROM all_tables WHERE tablespace_name is not NULL 
AND owner not in ('SYS', 'SYSTEM') 
ORDER BY  owner, table_name;

--Columns
SLECT OWNER, TABLE_NAME, Column_name, Data_type, data_length, data_precision, NULLABLE, character_Set_Name  
From all_tab_cols 
where USER_GENERATED = 'YES' 
AND owner not in ('SYS', 'SYSTEM');

--Indexes
select Owner, index_name, table_name, uniqueness,BLEVEL,STATUS from ALL_INDEXES
WHERE owner not in ('SYS', 'SYSTEM') 

--Constraints
select owner, constraint_name, constraint_type, table_name, search_condition, status, index_name, index_owner 
From all_constraints 
WHERE generated = 'USER NAME'
AND owner not in ('SYS', 'SYSTEM') 

--Role Previleges
select grantee, granted_role, admin_option, delegate_option, default_role, common
From DBA_ROLE_PRIVS

--Sys Privileges
select grantee, privilege, admin_option, common
From DBA_SYS_PRIVS 

How do I view a Tree list of Schemas for a database in Oracle SQL Developer?

Expand the "Other Users" node.

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