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Oracle Hello world from table

Create a simple table

 what VARCHAR2(10),
 who VARCHAR2(10),
mark VARCHAR2(10)

Insert values (you can omit target columns if you provide values for all columns)

INSERT INTO my_table (what, who, mark) VALUES ('Hello', 'world', '!' );
INSERT INTO my_table VALUES ('Bye bye', 'ponies', '?' );
INSERT INTO my_table (what) VALUES('Hey');

Remember to commit, because Oracle uses transactions


Select your data:

SELECT what, who, mark FROM my_table WHERE what='Hello';

Hello World from PL/SQL

/* PL/SQL is a core Oracle Database technology, allowing you to build clean, secure,
 optimized APIs to SQL and business logic. */
SET serveroutput ON
 DBMS_OUTPUT.PUT_LINE ('Hello World!');


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