Beginning SQL

Figure B-86
You enter SQL queries in the command line. Type the following statement:
CREATE TABLE MyTable (MyColumn int);
Press Enter to execute the SQL and create MyTable. You should receive a confirmation message from the
console. After creating MyTable, you need to insert some data. Type the following statement and press
Enter:
INSERT INTO MyTable(MyColumn) VALUES(123);
Enter and execute the following line of SQL code:
INSERT INTO MyTable(MyColumn) VALUES(888);
In order to see what data is contained in MyTable, clear the SQL entry box and type the following statement:
SELECT * FROM MyTable;
Press Enter and you should see a screen similar to what appears in Figure B-87:
It’s vital to note that none of the data is permanently stored in the database unless you tell Oracle to
store the data by issuing a COMMIT command. If you don’t issue a COMMIT command, the data you
entered is deleted when you close the SQL*Plus tool. Type the COMMIT command as shown below in the
command line:
COMMIT;
Setting Up and Using the Five Database Systems
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