Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Question

Question

Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Which generates the most rows in MySQL?

• SELECT 1 UNION SELECT 1 UNION SELECT 2;

• SELECT 1 UNION SELECT 1 UNION SELECT 1;

• SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1;

• SELECT 1 UNION ALL SELECT 2 UNION SELECT 2;

engineering Computer-Science

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

SELECT 1 UNION SELECT 1 UNION SELECT 2; ---- returns 2 rows

SELECT 1 UNION SELECT 1 UNION SELECT 1; ---- returns 1 row

SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1; ------ returns 3 rows

SELECT 1 UNION ALL SELECT 2 UNION SELECT 2; ---- return 2 rows

Answer : C

SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1;

this my sql will returns 3 rows

Add a comment

Answer 2

Similar Homework Help Questions

MySQL problem. Show MySQL queries to solve these problems. DO NOT USE JOIN keyword to solve...

MySQL problem. Show MySQL queries to solve these problems. DO NOT USE JOIN keyword to solve this Question 1: Rows in A, but not in B Question 2: Rows in B, but not in A Question 3: Rows in A and B, no overlap Question 4: Rows in A and B (Full Join) REMINDER: DO NOT USE JOIN KEYWORD
e mysql> Select from Orders; | Order ID | Order_Date | Customer_ID | Shipping_Date I -----...

e mysql> Select from Orders; | Order ID | Order_Date | Customer_ID | Shipping_Date I ----- --- -- --- | 12489 | 12491 | 12494 | 12495 | 12498 | 12500 | 12504 | 02-JUL-11 | 02-JUL-11 I 04-JUL-11 I 04-JUL-11 | 05-JUL-11 | 05-JUL-11 | 05-JUL-11 | 124 311 315 256 522 | 124 | 522 | 22-JUL-11 | 22-JUL-11 | 12-JUL-11 | 22-AUG-11 | 22-AUG-11 7 rows in set (0.18 sec) mysql> Select * from Order_line; Order_ID |...
1. Which company generates the most cash inflow from operating activities?

1. Which company generates the most cash inflow from operating activities? 2. Which of these companies report "Net cash used in investing activities"? 3. Calculate the total net increase or decrease in cash for (a) Gadberry, (b) Nessly, and (c) Tootsey.

1. Write the php statements to connect to MySQL server and select the database named personnel....

1. Write the php statements to connect to MySQL server and select the database named personnel. The database personnel is located at localhost server. The user id and password to log on to the server are finalexam and thePassword respectively. 2. Using the above connection, write the php statements to retrieve the name and the email fields from all records of the users table ( 'SELECT name, email FROM users') and display them one record per line.
which below is Not part of the steps in using MySQL with php? create a cookie...

which below is Not part of the steps in using MySQL with php? create a cookie retrieve the results and output them to a webpage build a query string connect to MySQL snd select the database to sur
Q1: Which of the following claims are true?* 1 point The recognizable languages are closed under union and intersection...

Q1: Which of the following claims are true?* 1 point The recognizable languages are closed under union and intersection The decidable lanquages are closed under union and intersection The class of undecidable languages contains the class of recognizable anguages For every language A, at least one of A or A*c is recognizable Other: This is a required question Q2: Which of the following languages are recognizable? (Select all that apply) 1 point EDFA-{ «A> 1 A is a DFA and...

MySQL SELECT DWTIME.TM_MONTH AS TM_MONTH, DWSALESFACT.SALE_UNITS AS NUMPROD, SUM(DWSALESFACT.SALE_PRICE*DWSALESFACT.SALE_UNITS) AS TOTSALES FROM DWSALESFACT...

MySQL SELECT DWTIME.TM_MONTH AS TM_MONTH, DWSALESFACT.SALE_UNITS AS NUMPROD, SUM(DWSALESFACT.SALE_PRICE*DWSALESFACT.SALE_UNITS) AS TOTSALES FROM DWSALESFACT INNER JOIN DWTIME ON DWSALESFACT.TM_ID=DWTIME.TM_ID GROUP BY DWTIME.TM_MONTH WITH ROLLUP; ERROR 1055 (42000) at line 2: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'Ch13_SaleCo.DWSALESFACT.SALE_UNITS' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by What am i missing??? TM_MONTH NUMPROD TOTSALES 9 23 1239.85 10 13 1012.21 NULL 36 2252.06
Identify the alkyl halide that generates ethanol. e alkyl halide that generates the most stable carbocation...

Identify the alkyl halide that generates ethanol. e alkyl halide that generates the most stable carbocation in aqueous a. bromoethane b. bromomethane c. 2-bromo-2-methylpropane d. 2-bromopropane
I can’t figure out how to combine the results from one select statement with the results...

I can’t figure out how to combine the results from one select statement with the results from another so that the results are side by side. Using Union causes the results of the second statement to add rows below the first results. The first select has sales_rep_id and number_of_customers. The second select has total_number_of_parts and total_customer_sales. I had to create ‘null as’ statements to create the proper columns in each of the statements so that the results from the second...

Need MySql commands for Use a UNION statement. Display the address ID, address, and district from...

Need MySql commands for Use a UNION statement. Display the address ID, address, and district from the address table where the district is California or Alberta. Display the address ID, address, and district only from the address table where the address contains Jol. Display the language ID and name from the language table and the film ID from the film table. Display all languages whether they have an associated film or not. Order results by language ID in ascending order....

Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Homework Answers

Add Answer to:
Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Post as a guest

Earn Coins

MySQL problem. Show MySQL queries to solve these problems. DO NOT USE JOIN keyword to solve...

e mysql> Select from Orders; | Order ID | Order_Date | Customer_ID | Shipping_Date I -----...

1. Which company generates the most cash inflow from operating activities?

1. Write the php statements to connect to MySQL server and select the database named personnel....

which below is Not part of the steps in using MySQL with php? create a cookie...

Q1: Which of the following claims are true?* 1 point The recognizable languages are closed under union and intersection...

MySQL SELECT DWTIME.TM_MONTH AS TM_MONTH, DWSALESFACT.SALE_UNITS AS NUMPROD, SUM(DWSALESFACT.SALE_PRICE*DWSALESFACT.SALE_UNITS) AS TOTSALES FROM DWSALESFACT...

Identify the alkyl halide that generates ethanol. e alkyl halide that generates the most stable carbocation...

I can’t figure out how to combine the results from one select statement with the results...

Need MySql commands for Use a UNION statement. Display the address ID, address, and district from...

Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Homework Answers

Add Answer to: Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...

Post as a guest

Earn Coins

Add Answer to:
Which generates the most rows in MySQL? • SELECT 1 UNION SELECT 1 UNION SELECT 2;...