SQL> -- create demo table
SQL> create table TestTable(
2 ID VARCHAR2(4 BYTE) NOT NULL,
3 MyName VARCHAR2(10 BYTE),
4 MyDate DATE,
5 MyNumber Number(8,2)
6 )
7 /
Table created.
SQL>
SQL>
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19960711","YYYYMMDD"),12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19970622","YYYYMMDD"),-12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19980513","YYYYMMDD"),22.1);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19990624","YYYYMMDD"),-2.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("20000415","YYYYMMDD"),2.1);
1 row created.
SQL>
SQL>
SQL> select * from TestTable;
ID MYNAME MYDATE MYNUMBER
---- ---------- --------- ----------
1 Alison 11-JUL-96 12.12
1 Alison 22-JUN-97 -12.12
1 Alison 13-MAY-98 22.1
1 Alison 24-JUN-99 -2.12
1 Alison 15-APR-00 2.1
SQL>
SQL> -- Query the USER_TAB_COLUMNS view to get all columns for a table that you own,
SQL>
SQL> commit;
Commit complete.
SQL>
SQL>
SQL> SELECT table_name, column_name, data_type, data_length
2 FROM USER_TAB_COLUMNS
3 WHERE table_name = "TESTTABLE"
4 ORDER BY column_id;
TABLE_NAME COLUMN_NAME DATA_TYPE DATA_LENGTH
------------------------------ ------------------------------ ---------------------------------------------------------------------------------------------------------- -----------
TESTTABLE ID VARCHAR2 4
TESTTABLE MYNAME VARCHAR2 10
TESTTABLE MYDATE DATE 7
TESTTABLE MYNUMBER NUMBER 22
SQL>
SQL>
SQL> drop table TestTable;
Table dropped.
SQL>
SQL> commit;
Commit complete.
SQL>
SQL>