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Get Table Columns
Sun, 07/06/2008 - 4:32pm — Lepa
Oracle's all_tab_columns table stores meta data information related to table columns. The SQL below will return all columns as well as column order Id for a specific table and owner. In our example, we will be looking at table EMLOYEES and owner HR.
SELECT column_name,
data_type ,
column_id
FROM all_tab_columns
WHERE owner = 'HR'
AND table_name = 'EMPLOYEES';
data_type ,
column_id
FROM all_tab_columns
WHERE owner = 'HR'
AND table_name = 'EMPLOYEES';
Results:
COLUMN_NAME DATA_TYPE COLUMN_ID
---------------- ---------- ---------
EMPLOYEE_ID NUMBER 1
FIRST_NAME VARCHAR2 2
LAST_NAME VARCHAR2 3
EMAIL VARCHAR2 4
PHONE_NUMBER VARCHAR2 5
HIRE_DATE DATE 6
JOB_ID VARCHAR2 7
SALARY NUMBER 8
COMMISSION_PCT NUMBER 9
MANAGER_ID NUMBER 10
DEPARTMENT_ID NUMBER 11
---------------- ---------- ---------
EMPLOYEE_ID NUMBER 1
FIRST_NAME VARCHAR2 2
LAST_NAME VARCHAR2 3
EMAIL VARCHAR2 4
PHONE_NUMBER VARCHAR2 5
HIRE_DATE DATE 6
JOB_ID VARCHAR2 7
SALARY NUMBER 8
COMMISSION_PCT NUMBER 9
MANAGER_ID NUMBER 10
DEPARTMENT_ID NUMBER 11
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Comments
Try this command
You are right about the DESC command but this isn't the purpose behind the SQL in the post. The purpose is not to only list the columns BUT to get the actual column names and do something with them. Example would be to dynamically insert column names into your code :)
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