Question

I have table TABLE_INFO with columns TNAME, CNAME, DTYPE, COLCOMMENT
I need to create a SQL script in Oracle SQL Developer, which creates new table with table name from column TNAME, columns from CNAME, datatype of columns from DTYPE and column comment from COLCOMMENT
How can I do this?

For example table TABLE_INFO has following data:

|TNAME | CNAME | DTYPE | Comment |

1|Employee | Emp_ID | NUMBER | Employee ID |

2|Employee | Emp_Nm| VARCHAR | Employee Name |

3|Job | Job_ID | NUMBER | Job ID | etc.

I need to write many CREATE TABLE statements like :

CREATE TABLE EMLOYEE
(EMP ID NUMBER,
Emp_Nm VARCHAR)

COMMENT ON COLUMN EMP_ID is ''Employee ID''

COMMENT ON COLUMN EMP_NM is ''Employee NAME''

for each TNAME

Answer 1

Oh, I confused.

This is a code for schema:

CREATE TABLE TABLE_INFO
(
    TNAME        VARCHAR2 (30)
   ,CNAME        VARCHAR2 (30)
   ,DTYPE        VARCHAR2 (30)
   ,COLCOMMENT   VARCHAR2 (100)
);

INSERT INTO TABLE_INFO VALUES ('Employee','Emp_ID','NUMBER','Employee ID');
INSERT INTO TABLE_INFO VALUES ('Employee','Emp_Nm','VARCHAR','Employee Name');
INSERT INTO TABLE_INFO VALUES ('Employee','Emp_Sal','NUMBER','Employee Salary');
INSERT INTO TABLE_INFO VALUES ('Job','Job_ID','NUMBER','Job ID');
INSERT INTO TABLE_INFO VALUES ('Job','Job_Nm','VARCHAR','Job Name');
INSERT INTO TABLE_INFO VALUES ('Department','Dept_ID','VARCHAR','Department ID');
INSERT INTO TABLE_INFO VALUES ('Department','Dept_Nm','VARCHAR','Department Name');

And, this is a code for execution:

-- FOR TABLE CREATION
SELECT 
 CASE WHEN RNO = 1 THEN 'CREATE TABLE '||T1.TNAME||' ( ' ELSE '    ' END ||
 T2.CNAME || ' ' || T2.DTYPE ||
 CASE WHEN CNT = RNO THEN ');' ELSE ',' END AS SQLTEXT
  FROM (  SELECT TNAME
                ,COUNT (1) CNT
            FROM TABLE_INFO
        GROUP BY TNAME) T1
      ,(SELECT ROW_NUMBER () OVER (PARTITION BY TNAME ORDER BY CNAME) RNO
              ,X.*
          FROM TABLE_INFO X) T2
 WHERE T1.TNAME = T2.TNAME
ORDER BY T1.TNAME, T2.RNO;

-- FOR COMMENT CREATION
SELECT 'COMMENT ON TABLE ' || TNAME || '.' || CNAME || ' IS ''' || COLCOMMENT || ''';' AS SQLTEXT
  FROM TABLE_INFO;

You could find the result at here

NOTE: I used ROW_NUMBER () function at Oracle only. please be aware of that.