SQL statement exercise

Hello everyone , I meet you again , I'm your friend, Quan Jun .

Name of the experiment SQL Sentence practice Place of experiment Laboratory Building 502 Date of experiment 3.21

One 、 Purpose and requirements of the experiment 1． Deepen the understanding of the relationship between tables 2． Understand the query methods and applications of data in the database 3． Master the similarities and differences of various queries and the conversion methods between them 4． Master the implementation of various query requirements Two 、 Experimental environment Sql Sever 2008,Windows10 3、 ... and 、 Experimental content The experiment is based on SQL Server 2000 System native pubs Database, for example , Take a book publishing company as a model . First, according to the method introduced in the previous chapter pubs The database is attached to the current DBMS in , Then carry out the experiment according to the requirements . Experiment task one Check the author numbers of all authors 、 Name information 2． Check the names of all authors 、 Author number information , And display the string in front of the author number of each author “ ID number ：”, Indicates that the displayed information is ID card information 3． The query in CA The author's name and city of the state 4． The date of publication is 2000.1.1-2000.12.31 Between the title and the date of publication 5． Check the books published by each publishing house 6． Check the quantity of a book sold in a store 7． Query the information of all books with sales records （ Book number 、 Title 、 Type and price ） 8． Show all book titles （ Books without sales records are also included ） 9． Query the information of sold books （ Book number 、 Title 、 Author, etc ） 10． Check all publishing businesses （business） The name of the publisher of the book Task two On the basis of task one , Practice using query statements , Include calculation Columns 、 Sum up 、 Maximum 、 minimum value 、 All kinds of choices Choose conditions 、 Character matching 、 Grouping and sorting , Experience the execution process of various queries , Lay a foundation for simple and comprehensive application . 1. Look up the title of the book T The beginning or publishing house number is 0877, And the price is greater than 16 Information about your book In ascending order of type and descending order of price （ When the type is the same ） Display the information of the book （ Title 、 author 、 Press. 、 type 、 Price ） The query sales volume is greater than 30 The title of the book and the number of sales 2. The query in 1990.1.1 To 2000.12.31 between , Total sales of each book 3. Check the city and state names of all authors , No duplicate information is required 4. Calculate how many books have been priced 5. Check the title of each book 、 The author and the total number of books it sells 6. Calculate the average price of all books 7. Check the title of the most expensive book 、 Author and price Experimental task 3 1. Refer to the primary key given in the above tables 、 Requirements for setting foreign keys , Make corresponding settings in the self created table . 2. towards authors Insert a row of author information into the table （ The specific value is self-determined ） 3. More than 100 The number of stores increased 10% A discount of 4. Delete 1994.9.14 The order of 5. Delete 1 Index established in 6. establish CA View of books written by state authors （ Include author number 、 full name 、 State of residence 、 Title 、 Price 、 Publication date ） 7. Establish payment method is cash （cash） Order view 8. establish CA View of all stores in the state Four 、 Summary of the experiment In this experiment, I learned a lot and gained a lot . Not from the beginning , Learn to operate slowly , When writing code , Always report errors , After careful examination, I still think I'm right , Finally, I found that there were always some details , I didn't notice . Through this time, I will tell myself that I must pay attention to details .

1. Check the author numbers of all authors 、 Name information

2． Check the names of all authors 、 Author number information , And display the string in front of the author number of each author “ ID number ：”, Indicates that the displayed information is ID card information 3． The query in CA The author's name and city of the state 4． The date of publication is 2000.1.1-2000.12.31 Between the title and the date of publication 5． Check the books published by each publishing house 6． Check the quantity of a book sold in a store 7． Query the information of all books with sales records （ Book number 、 Title 、 Type and price ）8． Show all book titles （ Books without sales records are also included ） 9． Query the information of sold books （ Book number 、 Title 、 Author, etc ） 10． Check all publishing businesses （business） The name of the publisher of the book Task two On the basis of task one , Practice using query statements , Include calculation Columns 、 Sum up 、 Maximum 、 minimum value 、 All kinds of choices Choose conditions 、 Character matching 、 Grouping and sorting , Experience the execution process of various queries , Lay a foundation for simple and comprehensive application . 1. Look up the title of the book T The beginning or publishing house number is 0877, And the price is greater than 16 Information about your book

1. In ascending order of type and descending order of price （ When the type is the same ） Display the information of the book （ Title 、 author 、 Press. 、 type 、 Price ）
2. The query sales volume is greater than 30 The title of the book and the number of sales

2. The query in 1990.1.1 To 2000.12.31 between , Total sales of each book 3. Check the city and state names of all authors , No duplicate information is required 4. Calculate how many books have been priced 5. Check the title of each book 、 The author and the total number of books it sells 6. Calculate the average price of all books 7. Check the title of the most expensive book 、 Author and price Experimental task 3 1. Refer to the primary key given in the above tables 、 Requirements for setting foreign keys , Make corresponding settings in the self created table .2. towards authors Insert a row of author information into the table （ The specific value is self-determined ） 3. More than 100 The number of stores increased 10% A discount of 4. Delete 1994.9.14 The order of 5. Delete 1 Index established in 6. establish CA View of books written by state authors （ Include author number 、 full name 、 State of residence 、 Title 、 Price 、 Publication date ）7. Establish payment method is cash （cash） Order view 8. establish CA View of all stores in the state Four 、 Summary of the experiment In this experiment, I learned a lot and gained a lot . Not from the beginning , Learn to operate slowly , When writing code , Always report errors , After careful examination, I still think I'm right , Finally, I found that there were always some details , I didn't notice . Through this time, I will tell myself that I must pay attention to details .

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