CREATE TABLE PENALTIES (PAYMENTNO INTEGER NOT NULL, PLAYERNO INTEGER NOT NULL, PAYMENT_DATE DATE NOT NULL, AMOUNT DECIMAL(7,2) NOT NULL, PRIMARY KEY (PAYMENTNO) ); CREATE TABLE MATCHES (MATCHNO INTEGER NOT NULL, TEAMNO INTEGER NOT NULL, PLAYERNO INTEGER NOT NULL, WON SMALLINT NOT NULL, LOST SMALLINT NOT NULL, PRIMARY KEY (MATCHNO) ); INSERT INTO PENALTIES VALUES (1, 6, '1980-12-08',100); INSERT INTO PENALTIES VALUES (2, 44, '1981-05-05', 75); INSERT INTO PENALTIES VALUES (3, 27, '1983-09-10',100); INSERT INTO PENALTIES VALUES (4,104, '1984-12-08', 50); INSERT INTO PENALTIES VALUES (5, 44, '1980-12-08', 25); INSERT INTO PENALTIES VALUES (6, 8, '1980-12-08', 25); INSERT INTO PENALTIES VALUES (7, 44, '1982-12-30', 30); INSERT INTO PENALTIES VALUES (8, 27, '1984-11-12', 75); INSERT INTO MATCHES VALUES ( 1, 1, 6, 3, 1); INSERT INTO MATCHES VALUES ( 2, 1, 6, 2, 3); INSERT INTO MATCHES VALUES ( 3, 1, 6, 3, 0); INSERT INTO MATCHES VALUES ( 4, 1, 44, 3, 2); INSERT INTO MATCHES VALUES ( 5, 1, 83, 0, 3); INSERT INTO MATCHES VALUES ( 6, 1, 2, 1, 3); INSERT INTO MATCHES VALUES ( 7, 1, 57, 3, 0); INSERT INTO MATCHES VALUES ( 8, 1, 8, 0, 3); INSERT INTO MATCHES VALUES ( 9, 2, 27, 3, 2); INSERT INTO MATCHES VALUES (10, 2, 104, 3, 2); INSERT INTO MATCHES VALUES (11, 2, 112, 2, 3); INSERT INTO MATCHES VALUES (12, 2, 112, 1, 3); INSERT INTO MATCHES VALUES (13, 2, 8, 0, 3); In the PENALTIES table, change the column name AMOUNT to PENALTY_AMOUNT. Add a new column called Date of type date to the MATCHES table. In the MATCHES table, change the column name MATCHNO to MATCH. MATCH is a keyword but this can be done.
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
CREATE TABLE PENALTIES
(PAYMENTNO INTEGER NOT NULL,
PLAYERNO INTEGER NOT NULL,
PAYMENT_DATE DATE NOT NULL,
AMOUNT DECIMAL(7,2) NOT NULL,
PRIMARY KEY (PAYMENTNO) );
CREATE TABLE MATCHES
(MATCHNO INTEGER NOT NULL,
TEAMNO INTEGER NOT NULL,
PLAYERNO INTEGER NOT NULL,
WON SMALLINT NOT NULL,
LOST SMALLINT NOT NULL,
PRIMARY KEY (MATCHNO) );
INSERT INTO PENALTIES VALUES (1, 6, '1980-12-08',100);
INSERT INTO PENALTIES VALUES (2, 44, '1981-05-05', 75);
INSERT INTO PENALTIES VALUES (3, 27, '1983-09-10',100);
INSERT INTO PENALTIES VALUES (4,104, '1984-12-08', 50);
INSERT INTO PENALTIES VALUES (5, 44, '1980-12-08', 25);
INSERT INTO PENALTIES VALUES (6, 8, '1980-12-08', 25);
INSERT INTO PENALTIES VALUES (7, 44, '1982-12-30', 30);
INSERT INTO PENALTIES VALUES (8, 27, '1984-11-12', 75);
INSERT INTO MATCHES VALUES ( 1, 1, 6, 3, 1);
INSERT INTO MATCHES VALUES ( 2, 1, 6, 2, 3);
INSERT INTO MATCHES VALUES ( 3, 1, 6, 3, 0);
INSERT INTO MATCHES VALUES ( 4, 1, 44, 3, 2);
INSERT INTO MATCHES VALUES ( 5, 1, 83, 0, 3);
INSERT INTO MATCHES VALUES ( 6, 1, 2, 1, 3);
INSERT INTO MATCHES VALUES ( 7, 1, 57, 3, 0);
INSERT INTO MATCHES VALUES ( 8, 1, 8, 0, 3);
INSERT INTO MATCHES VALUES ( 9, 2, 27, 3, 2);
INSERT INTO MATCHES VALUES (10, 2, 104, 3, 2);
INSERT INTO MATCHES VALUES (11, 2, 112, 2, 3);
INSERT INTO MATCHES VALUES (12, 2, 112, 1, 3);
INSERT INTO MATCHES VALUES (13, 2, 8, 0, 3);
- In the PENALTIES table, change the column name AMOUNT to PENALTY_AMOUNT.
- Add a new column called Date of type date to the MATCHES table.
- In the MATCHES table, change the column name MATCHNO to MATCH. MATCH is a keyword but this can be done.
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