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The SQL statements are written in pure SQL. Therefore, some SQL implementations might require that you modify the statements to conform to the conventions of that particular implementation. Be sure to check your product documentation.
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The SQL statements are presented here according to the order in which the projects were presented in the book. You can reference these statements as necessary to use them to recreate exercises or to use them as a foundation for other exercises. If you re recreating the INVENTORY database and want to ensure that you re including all the necessary elements, see the The INVENTORY Database section later in this appendix.
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Try This 3-1
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CREATE TABLE COMPACT_DISCS ( COMPACT_DISC_ID INT, CD_TITLE VARCHAR(60), LABEL_ID INT );
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CREATE TABLE CD_LABELS ( LABEL_ID INT, COMPANY_NAME VARCHAR(60) ); CREATE TABLE MUSIC_TYPES ( TYPE_ID INT, TYPE_NAME VARCHAR(20) );
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Appendix C:
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Try This 3-2
Altering and Deleting SQL Tables
CREATE TABLE COMPACT_DISC_TYPES ( COMPACT_DISC_ID INT, TYPE_ID INT ); DROP TABLE COMPACT_DISC_TYPES CASCADE; CREATE TABLE COMPACT_DISC_TYPES ( COMPACT_DISC_ID INT, CD_TITLE VARCHAR(60), TYPE_ID INT ); ALTER TABLE COMPACT_DISC_TYPES DROP COLUMN CD_TITLE CASCADE;
Try This 4-1
DROP DROP DROP DROP TABLE TABLE TABLE TABLE
Adding NOT NULL, Unique, and Referential Constraints
COMPACT_DISCS COMPACT_DISC_TYPES MUSIC_TYPES CD_LABELS CASCADE; CASCADE; CASCADE; CASCADE;
CREATE TABLE ( TYPE_ID TYPE_NAME CONSTRAINT CONSTRAINT
MUSIC_TYPES INT, VARCHAR(20) NOT NULL, UN_TYPE_NAME UNIQUE (TYPE_NAME), PK_MUSIC_TYPES PRIMARY KEY (TYPE_ID) );
CREATE TABLE CD_LABELS ( LABEL_ID INT, COMPANY_NAME VARCHAR(60) DEFAULT 'Independent' NOT NULL, CONSTRAINT PK_CD_LABELS PRIMARY KEY (LABEL_ID) ); CREATE TABLE COMPACT_DISCS ( COMPACT_DISC_ID INT, CD_TITLE VARCHAR(60) NOT NULL, LABEL_ID INT NOT NULL, CONSTRAINT PK_COMPACT_DISCS PRIMARY KEY (COMPACT_DISC_ID), CONSTRAINT FK_LABEL_ID FOREIGN KEY (LABEL_ID) REFERENCES CD_LABELS ); CREATE TABLE COMPACT_DISC_TYPES ( COMPACT_DISC_ID INT, MUSIC_TYPE_ID INT, CONSTRAINT PK_COMPACT_DISC_TYPES
SQL: A Beginner s Guide
PRIMARY CONSTRAINT FOREIGN CONSTRAINT FOREIGN
KEY ( COMPACT_DISC_ID, MUSIC_TYPE_ID), FK_COMPACT_DISC_ID_01 KEY (COMPACT_DISC_ID) REFERENCES COMPACT_DISCS, FK_MUSIC_TYPE_ID KEY (MUSIC_TYPE_ID) REFERENCES MUSIC_TYPES );
CREATE TABLE ARTISTS ( ARTIST_ID INT, ARTIST_NAME VARCHAR(60) NOT NULL, PLACE_OF_BIRTH VARCHAR(60) DEFAULT 'Unknown' NOT NULL, CONSTRAINT PK_ARTISTS PRIMARY KEY (ARTIST_ID) ); CREATE TABLE ARTIST_CDS ( ARTIST_ID INT, COMPACT_DISC_ID INT, CONSTRAINT PK_ARTIST_CDS PRIMARY KEY ( ARTIST_ID, COMPACT_DISC_ID ), CONSTRAINT FK_ARTIST_ID FOREIGN KEY (ARTIST_ID) REFERENCES Artists, CONSTRAINT FK_COMPACT_DISC_ID_02 FOREIGN KEY (COMPACT_DISC_ID) REFERENCES COMPACT_DISCS );
Try This 4-2
Adding a CHECK Constraint
NOT NULL;
ALTER TABLE COMPACT_DISCS ADD COLUMN IN_STOCK INT
ALTER TABLE COMPACT_DISCS ADD CONSTRAINT CK_IN_STOCK CHECK ( IN_STOCK > 0 AND IN_STOCK < 50 );
Try This 5-1
Adding Views to Your Database
CREATE VIEW CDS_IN_STOCK AS SELECT CD_TITLE, IN_STOCK FROM COMPACT_DISCS WHERE IN_STOCK > 10 WITH CHECK OPTION; CREATE VIEW CD_PUBLISHERS ( CD_TITLE, PUBLISHER ) AS SELECT COMPACT_DISCS.CD_TITLE, CD_LABELS.COMPANY_NAME FROM COMPACT_DISCS, CD_LABELS WHERE COMPACT_DISCS.LABEL_ID = CD_LABELS.LABEL_ID AND CD_LABELS.LABEL_ID = 5403 OR CD_LABELS.LABEL_ID = 5402; DROP VIEW CD_PUBLISHERS; CREATE VIEW CD_PUBLISHERS ( CD_TITLE, PUBLISHER ) AS SELECT COMPACT_DISCS.CD_TITLE, CD_LABELS.COMPANY_NAME FROM COMPACT_DISCS, CD_LABELS WHERE COMPACT_DISCS.LABEL_ID = CD_LABELS.LABEL_ID;
Appendix C:
SQL Code Used in Try This Exercises
Try This 6-1
Managing Roles and Privileges
CREATE ROLE MRKT; CREATE ROLE SALES_STAFF; GRANT SELECT ON CDS_IN_STOCK TO PUBLIC; GRANT SELECT, INSERT, UPDATE(CD_TITLE) ON COMPACT_DISCS TO SALES_STAFF WITH GRANT OPTION; GRANT SALES_STAFF TO MRKT; REVOKE SELECT ON CDS_IN_STOCK FROM PUBLIC CASCADE; REVOKE ALL PRIVILEGES ON COMPACT_DISCS FROM SALES_STAFF CASCADE; REVOKE SALES_STAFF FROM MRKT CASCADE; DROP ROLE MRKT; DROP ROLE SALES_STAFF;
Try This 7-1
NOTE
Querying the Inventory Database
The INSERT statements used for this project are listed at the bottom of the The INVENTORY Database section later in this appendix. SELECT * FROM ARTISTS; SELECT CD_TITLE, IN_STOCK FROM COMPACT_DISCS; SELECT * FROM CDS_IN_STOCK; SELECT CD_TITLE, IN_STOCK FROM COMPACT_DISCS WHERE IN_STOCK > 10 AND IN_STOCK < 30; SELECT LABEL_ID, SUM(IN_STOCK) AS TOTAL_IN_STOCK FROM COMPACT_DISCS GROUP BY LABEL_ID;
SQL: A Beginner s Guide
SELECT FROM GROUP HAVING SELECT FROM WHERE ORDER
LABEL_ID, SUM(IN_STOCK) AS TOTAL_IN_STOCK COMPACT_DISCS BY LABEL_ID SUM(IN_STOCK) > 10; * COMPACT_DISCS IN_STOCK > 10 BY CD_TITLE DESC;
Try This 8-1
Modifying SQL Data
INSERT INTO CD_LABELS VALUES ( 837, 'DRG Records' ); INSERT INTO COMPACT_DISCS VALUES ( 116, 'Ann Hampton Callaway', 836, 14 ) ; INSERT INTO COMPACT_DISCS ( COMPACT_DISC_ID, CD_TITLE, LABEL_ID, IN_STOCK) VALUES ( 117, 'Rhythm Country and Blues', 832, 21 ); UPDATE COMPACT_DISCS SET IN_STOCK = 25 WHERE COMPACT_DISC_ID = 117; UPDATE COMPACT_DISCS SET LABEL_ID = ( SELECT LABEL_ID FROM CD_LABELS WHERE COMPANY_NAME = 'DRG Records' ) WHERE COMPACT_DISC_ID = 116; SELECT FROM WHERE OR * COMPACT_DISCS COMPACT_DISC_ID = 116 COMPACT_DISC_ID = 117;
DELETE FROM COMPACT_DISCS WHERE COMPACT_DISC_ID = 116 OR COMPACT_DISC_ID = 117; DELETE FROM CD_LABELS WHERE LABEL_ID = 837;
Appendix C:
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