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CASE WHEN sql

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Nice Narwhal answered on April 17, 2020 Popularity 10/10 Helpfulness 2/10

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CASE WHEN sql

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-2

SELECT column_name,
    CASE 
      WHEN boolean_condition THEN 'Result_1'
      WHEN boolean_condition THEN 'Result_2'
      ELSE 'Result_3'
    END AS result_column_name
 FROM table_name_1  
 LEFT JOIN table_name_2 ON
 	CASE 
      WHEN boolean_condition THEN 'Boolean_Result_1'
      WHEN boolean_condition THEN 'Boolean_Result_2'
      ELSE 'Boolean_Result_3'
    END;

Popularity 10/10 Helpfulness 2/10 Language sql

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Tags: case case-when join sql

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Contributed on Oct 31 2023

Nice Narwhal

0 Answers Avg Quality 2/10

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sql case

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-- NOTE: this is for SQL-Oracle specifically

/*
NB: Please like Mingles444 post, I derived this from him/her
*/

-- syntax: (Retrieved from grepper:Mingles444)
CASE
    WHEN condition1 THEN result1
    WHEN condition2 THEN result2
    WHEN conditionN THEN resultN
    ELSE result
END 

-- example:
SELECT 
	CASE
      WHEN (1+6 = 6) THEN 'A'
      WHEN (1+6 = 7) THEN 'B'
      WHEN (1+6 = 8) THEN 'C'
      ELSE 'D'
	END 
FROM DUAL;

-- OUTPUT: B

Popularity 10/10 Helpfulness 5/10 Language sql

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Contributed on Apr 17 2020

Jacques_Kirstein

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case sql

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-- syntaxis: (BY Junior Cercado)
CASE
    WHEN condition1 THEN result1
    WHEN condition2 THEN result2
    WHEN conditionN THEN resultN
    ELSE result
END

Popularity 10/10 Helpfulness 4/10 Language sql

Source: Grepper

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Contributed on Nov 21 2023

Junior Cercado V.

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SQL CASE With ELSE in SQL

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SELECT customer_id, first_name,
CASE
    WHEN country = 'USA' THEN 'United States of America'
    WHEN country = 'UK' THEN 'United Kingdom'
    ELSE 'Unknown Country'
END AS country_name
FROM Customers;

Popularity 10/10 Helpfulness 4/10 Language sql

Source: Grepper

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Contributed on May 22 2022

SAMER SAEID

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sql select case when

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--CREATE SOME SAMPLE DATA

CREATE TABLE Casedata
  (
     NAME VARCHAR(10)
  );

INSERT INTO Casedata VALUES ('Test 1');
INSERT INTO Casedata VALUES ('Test 2');
INSERT INTO Casedata VALUES ('None');

-- CASE WHEN IN SQL
SELECT NAME,
       CASE
         WHEN NAME = 'Test 1' THEN 'The value is 1'
         WHEN NAME = 'Test 2' THEN 'The value is 2'
         ELSE 'Sorry no Match'
       END
FROM   Casedata

Popularity 10/10 Helpfulness 3/10 Language sql

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Tags: sql

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Contributed on May 06 2022

Sore Seal

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sql case when in

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CASE
    WHEN SUBSTRING(applications.pinfl, 1,1) IN ('3','5','7') THEN 'Erkak'
    WHEN SUBSTRING(applications.pinfl, 1,1) IN ('2','4','6') THEN 'Ayol'
    ELSE 'Topilmadi'
END as gender

Popularity 10/10 Helpfulness 3/10 Language sql

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Contributed on Nov 15 2023

Shadow

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sql case

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Change query output depending on conditions.
Example: Returns users and their subscriptions, along with a new column
called activity_levels that makes a judgement based on the number of
subscriptions.
SELECT first_name, surname, subscriptions
CASE WHEN subscriptions > 10 THEN 'Very active'
WHEN Quantity BETWEEN 3 AND 10 THEN 'Active'
ELSE 'Inactive'
END AS activity_levels
FROM users;

Popularity 10/10 Helpfulness 3/10 Language sql

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Contributed on Jan 07 2021

Lorenzo Satta Chiris

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case sql

Comment

SELECT
season,
ROUND(AVG(
    CASE         -- Start CASE
        WHEN hometeam_id = 8455 AND home_goal > away_goal THEN 1
        WHEN hometeam_id = 8455 AND home_goal < away_goal THEN 0
        ELSE NULL
    END          -- End CASE
        ), 2) AS pct_homewins,
FROM table_name
WHERE hometeam_id = 8455 OR awayteam_id = 8455  -- ADVISED : make sure to filter, else the new column will contain many NULLS with all data
GROUP BY season;

Popularity 10/10 Helpfulness 3/10 Language sql

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Contributed on Jan 26 2024

Innocent Iguana

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SQL CASE Statement

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SELECT order_id, customer_id,
CASE
    WHEN amount >= 400 THEN (amount - amount * 10/100)
END AS offer_price
FROM Orders;

Popularity 10/10 Helpfulness 3/10 Language sql

Source: Grepper

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Contributed on May 22 2022

SAMER SAEID

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SQL CASE

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SELECT customer_id, first_name,
CASE
  WHEN age >= 18 THEN 'Allowed'
END AS can_vote
FROM Customers;

Popularity 10/10 Helpfulness 2/10 Language sql

Source: Grepper

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Contributed on May 22 2022

SAMER SAEID

0 Answers Avg Quality 2/10

case when switch in SQL

Comment

-- Case Eg.) to retrive the MAX value of a Field 
-- if there are entries for the Field in table MAX value will be returned 
-- But if there is no entries at all for the Field in tabel MAX will return
-- Null as the output. But Using Case When we can check it out return zero 
-- or any other value if there is no enties for the Field in table..
SELECT 
CASE   -- Like Switch Case
	WHEN -- First When condition 
		(MAX(BILLID) IS NULL) -- Condition 
	THEN 1   -- output   (We can also add more When conditions like Above)
ELSE -- When WHEN Condition not Satisfied Below will be Executed. 
		(MAX(BILLID)) -- output
END 
as MAXBILLID   from  DUAL;
-- Final Output
-- If there is no entry in the Field for the table
-- BILLID
--  1
-- If there are entries MAX of that Field value from the table
-- BILLID
-- 10

Popularity 10/10 Helpfulness 2/10 Language sql

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Contributed on Nov 12 2020

Huggies Pants :)

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CASE WHEN sql

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