Explain why the following two commands produce different results: SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT ; SELECT COUNT ( DISTINCT V_CODE ) FROM PRODUCT ; check_circle Expert Solution. Want to see the full answer? Check out a sample textbook solution. See solution. arrow_back. Chapter 7, Problem 8RQ.
2/26/2020 · SELECT COUNT ( DISTINCT cust_code ) AS Number of employees FROM orders; Sample table : orders. Output : Number of employees —– 25 Pictorial Presentation: SQL COUNT ( ) with All . In the following, we have discussed the usage of ALL clause with SQL COUNT () function to count only the non NULL value for the specified column within the argument, #Question-11 SELECT * FROM VENDOR WHERE V_CODE IN ( SELECT DISTINCT V_CODE FROM PRODUCT ); #Question-12 SELECT * FROM PRODUCT WHERE P_PRICE= ( SELECT MIN(P_PRICE) FROM PRODUCT ); #Question-13 SELECT COUNT (*) FROM PRODUCT WHERE P_PRICE < ( SELECT AVG(P_PRICE) FROM PRODUCT ); #Question-14 SELECT CUS_CODE, COUNT (*) FROM INVOICE GROUP BY CUS_CODE; #Question-15 SELECT CUS_CODE, COUNT.
10/18/2017 · SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT; This query will first execute COUNT (V_CODE) which will return a single value. Then the DISTINCT will be applied to that single value. Which means it will display the same value again.
SELECT DISTINCT COUNT(V_CODE) FROM PRODUCT ; d. SELECT COUNT ( DISTINCT V_CODE ) FROM PRODUCT ; 2. Which query returns the number of products in the inventory supplied by each vendor and limit the listing to products whose prices average greater than equal $100? Select one: a.
SQL SELECT DISTINCT Statement How do I return unique values in SQL? SELECT DISTINCT returns only distinct (i.e. different) values. The DISTINCT keyword eliminates duplicate records from the results. DISTINCT can be used with aggregates: COUNT , AVG, MAX, etc. It operates on a single column. DISTINCT for multiple columns is not supported.
Answer to Explain why the following two commands produce different results: SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT ; SELECT ….
In the table PRODUCT , contains the attribute: P_CODE, P_DESCRIPT, P_INDATE, P_QOH, P_MIN, P_PRICE, P_DISCOUNT, V_CODE . I am trying to find how to display the total distinct count of P_code for each V_code type in the product table. I have written this.
SELECT DISTINCT COUNT (V_CODE) FROM PRODUCT; SELECT COUNT (DISTINCT V_CODE) FROM PRODUCT; The difference is in the order of operations. The first command executes the Count function to count the number of values in V_CODE including duplicate values, and then the Distinct keyword only allows one count of that value to be displayed.
select count (distinct v_code) from product; The difference is in the order of operations. The first command executes the Count function to count the number of values in V_CODE (say the count returns 14, for example) including duplicate values, and then the Distinct keyword only allows one count of that value to be displayed (only one row with the value 14 appears as the result).
