Sql case when multiple conditions group by multiple rows. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric Evaluates a list of conditions and returns one of multiple possible result expressions. SQL query group by with multiple conditions. I don't want to merge when value in first and second row in the same column is different. One way is to use GROUP BY with HAVING to count that the number of rows found is 2, of which 2 are matching the condition;. SubjectID WHEN 'Maths' THEN CASE WHEN GradeID = 'A' THEN 1 ELSE 0 END WHEN 'English' THEN CASE WHEN GradeID = 'B' THEN 1 ELSE 0 END ELSE 0 END ) = 2 The ELSE 0 ensures other subjects are ignored, and the SUM() = 2 ensures both conditions are matched. You would typically need in this case a group by where the first name is found in a per group and the count = 2. prog = Desired result is, I want all the rows and observations from the dataset 'have' plus one more variable 'CR_ratio' and it should have value as 9. WITH cte AS (SELECT DISTINCT * FROM Table2) SELECT t1. In general, the value of the case-expression is the value of the result-expression following the first (leftmost) case that evaluates to true. "status" = 1 AND t1. You can combine multiple conditions to avoid the situation: This example might help you, the picture shows how SQL case statement will look like when there are if and more than one inner if loops. SQL using count in case statement. 0. What am I doing wrong. I tried with case when as below, but it didn't worked either as it didn't produce desired results. "pId" WHERE t1. What I now want to do is have multiple THEN clauses within those WHEN statements, as I'm aiming to add more than one column. Data Types: Ensure that the data types of values used in conditions match the corresponding column types. You can not use wildchar eather while using a group by. Consider it the equivalent of “pivoting” data - combining multiple rows by category and an aggregate function. type, attempt. In this article, we’ll explore how to use the CASE statement with multiple With the searched CASE expression, we can have multiple WHEN conditions: SELECT [BusinessEntityID] , [JobTitle] , [HireDate] , Seniority = CASE WHEN DATEDIFF ( The CASE WHEN statement in SQL is a conditional expression, similar to if-else logic in programming languages. Oracle SQL - Multiple return from case. Ask Question Asked 15 years, 3 months ago. My question is this: how do I select users whose ancestors hail from multiple, specified countries? For instance, show me all users who have ancestors from England, France and Germany, and return 1 row per user that met that criteria. FROM 2. Inside the GROUP BY clause, we specify that the corresponding count for “New” is If you need to evaluate multiple conditional statements, the SQL CASE statement will do the job. GRP_BSN. 0/SUM(SUM(CASE WHEN Year = '2010' THEN Total ELSE 0 END)) OVER '2010 Percent of Total' ,SUM(CASE WHEN Year = '2011' THEN Total I have a sceanrio where i need to retreive values from different sub queries based on a condition in a main select statement. Cust = ID WHERE s. Name = 'A' and T2. both of the two source datasets provided in your code example. price) AS TOTAL FROM table1 t, table2 k WHERE t. CASE @OrderByColumn WHEN 1 THEN Forename ELSE NULL END So if @OrderByColumn is not 1 then the statement returns always NULL. If you need it aggregated across all products, you could just JOIN back to your base table, or use a window function, e. If you're trying to get the count of each filename, do. It returns one row for each group. "pId" HAVING SUM( CASE WHEN t2. Modified 9 years, (CASE WHEN w_id not in ('1','2') THEN fee END) as value3 from table1 group by e_id ,CASE WHEN w_id in ('1','2') THEN w_id ELSE 0 END SQL SERVER 2008 TVF OR CHARINDEX to search column with comma. id, users. "mode"=2 AND I'm using standard SQL on BigQuery to create a new table based on certain conditions within an existing table. Modified 3 years, 5 months ago. Customer is not null then 'Paid' else 'Free' END as Paid_Free, Status,case when CompleteDate < '4/1/2018' then '1H' else '2H' end as Busy, count(*) userCount from CompletesCur OS left outer join Sales s on S. I have some distinct usernames, which represent groups, e. i was trying to use Case, but the problem is that Case does not support multiple columns. Then you can group by that new field. As I don't have your base tables I've given the fixed values from your sample as a further inner query to demonstrate the idea, with a Let's say I have a table like this: Letter Color A Red A Blue B Red C Red C Red What I would like to achieve is the below output format: SQL Check conditions across multiple rows. Then, I un-pivot, and take it from there. Example 2: CASE WHEN With ELSE in GROUP BY. Is there a solution to this? Use CASE with multiple conditions. The following I think this can also works for you . orderno AND length(k. I know of two methods: GROUP BY (Case statement 1, Case statement 2) and subquery. SELECT 6. Complex Conditions: For complex filtering, consider using subqueries, joins, or CASE expressions. EDIT: I think this can also works for you . This Initiates the conditional logic. And this is what you will see me doing. Table 1 is a raw table. In the table below my output should be the I would recommend something like this. I would like to group all the other usernames (which happens to be numeric) into a group e. Also your syntax would be slow if it worked. GROUP BY puts the rows for employees with the same job title into one group. WHERE 3. Results not limited to set conditions. I have table: I want to add a case to check if exists add its price to type1 so I tried something like. So everything is wrong. We can use a Case statement in select queries along with Where, Order By, and Group By clause. Here is the example of my query: SELECT ActivityID, Hours = (CASE WHEN ActivityTypeID <> 2 THEN FieldName = (Some Aggregate Sub Query), FieldName2 = (Some other aggregate sub query) WHEN ActivityTypeID = 2 THEN FieldName = (Some Aggregate Sub Query with diff result), SUMIF can be replicated in SQL with SUM(case statement):. This would look like the following query: SQL GROUP BY CASE statement with aggregate function. HAVING 5. SQL Group By condition. Of course, you can group rows by more than one column. Look at all the other answers. ORDER BY Currently when I issue this SQL, it gets the distinct username. result You need to GROUP BY your CASE expression instead of your source column:GROUP BY model. That doesn't exclude it from sorting, by the way, but it puts all those rows together in the result, making 'SurName' the The alias isn't available to use in the GROUP BY because when GROUP BY happens the alias isn't defined yet: Here's the order: 1. ReturnYear = 2017 For 6 accounts, the SQL should return 6 accounts with their Balance, Income and Outcome of that account. Both conditions should be present in the group. name, attempt. GROUP BY is a clause of the SELECT command. prog, (case when t. It allows you to compute various statistics for a group of rows. If you had 2 rows with the values: null, null, null, 'A' and 'A', null, null, null they would be considered identical in this match. For example, you can use GROUP BY with an employee table to know how many employees are of each gender. I've seen many examples of how to use GROUP BY and CASE BY The SQL Server CASE statement sets the value of the condition column to “New” or “Old”. user_name HAVING COUNT(*) = 2 In this case you match the HAVING COUNT(*) = test value against the number of tags name in the IN clause. (group by): Multiple CASE WHEN statements allow you to implement conditional logic in SQL queries, allowing for the evaluation of multiple conditions and the execution of different actions group by e_id and . ; THEN: Indicates the result to be returned if the condition is met. id from table t2 where t2. ID WHERE T1. SUM( CASE [Exam]. type END ) AS TYPE, SUM(t. select count(*) as anc,(select count(*) from Patient where sex='F')as patientF,(select count(*) from Patient where sex='M') as patientM from anc I have to group by ID and year+month of the Date to get a single row for each month and for each ID (it can have more statuses in a single month, each status having its own row) based on a few conditions: if it has row with status 'I' and/or row with status 'R' and/or row with status 'S', it must return the row with status 'I' (only these 3 ok, I am refering to some docs now. Then the COUNT() function counts the rows in each group. A CASE statement can return only one value. The CASE expression has two formats:. I have multiple WHEN clauses to support this (as there are several different conditions I'm checking for). user_id WHERE tags. AS OPTOUT FROM Table GROUP BY product, EMAIL. How to group same columns from same two tables, but from two different result sets and/or conditions. You may be able to turn this into a subquery and then JOIN it to whatever other relations you're working with. I would do this in multiple steps. user_name FROM users INNER JOIN tags ON users. The distinct in your Case statement is attempting to return multiple values when only one is allowed, and your SELECT statement will only return one value in one row currently. To effectively harness CASE in SQL, grasping its structure and practical uses is SQL Server CASE expression evaluates a list of conditions and returns one of the multiple specified results. One of the ways to compare sets is to take the count of group, filter groups by search set, and see if number of matches per group equals original number of group members: In that case: SELECT distinct ID FROM tblTemp as T1 INNER JOIN tblTemp as T2 ON T1. ip_address from table t ) t; My query below returns multiple lines instead of aggregating the count. ex. 1. What is that SQL? CASE: Begins the expression. In this case, the database engine alters the procedure seen above to return the results of the query. ip_address order by type = 'purchase' desc, id desc limit 1 ) as mostrecent from (select distinct t. Get the action type, then issue the appropriate query. I want to aggregate table 1 to get table 2 based on email id. ip_address = t1. GRP_OTHERS select username, count(*) from host where seq between 0 and 2000 group by username; 63149 1 63732 1 64110 2 70987 12 76841 sql update multiple rows, with condition in each row [closed] Ask Question Asked 5 years, 10 months ago. However, I have attempted to show how this might be achieved by having a guess at what the test table might contain:. GRP_OTHERS select username, count(*) from host where seq between 0 and 2000 group by username; 63149 1 63732 1 64110 2 70987 12 76841 You can read about grouping by multiple columns in our article How to Group by Multiple Columns in SQL. g. invoice_no) < 12 THEN 'type1' ELSE t. You can use a WHERE condition in your query with SUM() and GROUP BY. THEN join back to the original table for all people within those given groups. You would define the first two population levels and then use ELSE to bucket every other city into high. I add a 3-row table for the possible category values High, Mid and Low, and I add a 3-row category table: categories 'a','b', and 'c'. GROUP BY then collapses the rows in each group, keeping only the value of the column JobTitle and the count. In this case, the a1 replica is used for the first condition (planet - earth) and the a2 replica is used for the second condition (object - spaceship_a). select count(*) as anc,(select count(*) from Patient where sex='F')as patientF,(select count(*) from Patient where sex='M') as patientM from anc Use: SELECT t. "pId" FROM Table1 t1 JOIN cte t2 ON t1. ; condition: The condition to be evaluated, e. ; WHEN: Specifies a condition to check. Ask Question Asked 10 years, 10 months ago. Example #2: GROUP BY Multiple Columns. It’s particularly useful when you want to aggregate values based on specific conditions. You can create a new field called TypeOfDir, using the CASE instruction to get a value from 1 to 3 for the differents conditions that you have. SQL group by multiple columns. name IN ('tag1', 'tag2') GROUP BY users. count function inside case statement. SQL using CASE in count and group by. Viewed 2k times SELECT course_id FROM table t GROUP BY course_id HAVING SUM(case when prerequisite_id not in (1, 2, 3) then 1 else 0 end) = 0 and SUM(case when prerequisite_id in (1, 2, 3) then 1 else 0 end) > 0; Currently when I issue this SQL, it gets the distinct username. flag) = 2 Using SUM with CASE WHEN allows you to perform conditional summation in SQL. It allows for conditional checks within SQL queries, offering a I'd like to use GROUP BY with a CASE statement, to group results in a particular way if @myboolean is true. You can use functions like UPPER or LOWER to make comparisons case-insensitive. The GROUP BY is an optional clause of the SELECT statement. A user can have multiple rows on the table, as a user can have ancestors from multiple countries. I think you can use a case expression: update table set c = (case when a = 1 and b = 1 then 1000 when a = 2 and b = 2 then 2000 when a = 3 and b = 3 then 3000 end) where (a = 1 and b = 1) or (a = 2 and b = 2) or (a = 3 and b = 3 So, in this case, only a row with service_sid = 2 should be returned. GROUP BY 4. SELECT column_name, CASE WHEN condition THEN result END AS new_column FROM your_table; Let's explain each part in detail: SELECT: Specifies the columns to be included in the result set. The CASE expression has two formats: simple CASE expression and Multiple THENs in CASE WHEN. And obviously you can't escape from the fact that case expressions are really just a concealed way of writing nested IF/THEN/ELSEs which inevitably has, in a certain sense, "more procedurality" to it than some other language constructs. 2521 in the matching rows. The GROUP BY clause allows you to group rows based on values of one or more columns. use aggregations and aggregate functions and OLAP functios to get min, max, first, last and rank per group or partition. – I have a table like below: I want to select the group which has RELB_CD =9093 and INFO_SRC_CD with 7784. I want to display 0 if the condition is not statisfied. The simple Your query would work already - except that you are running into naming conflicts or just confusing the output column (the CASE expression) with source column result, which has different content. If you want to use multiple conditions within a single WHEN clause, you can use the AND, OR, or NOT logical operators to combine these Case statement controls the different sets of a statement based upon different conditions. "keyVal" = 45 GROUP BY t1. What happens if we have more than one condition we want to apply to our data? The following example shows how to use the CASE The case statement in SQL returns a value on a specified condition. For example (using SQL Server 2K5+ CTEs): WITH C1 AS ( SELECT a1 AS value1, b1 AS value2 FROM table WHERE condition1 ), C2 AS ( SELECT a2 AS value1, b2 AS value2 FROM table WHERE How can I merge multiple rows with same ID into one row. Is there a "better" way to rewrite a SELECT clause where multiple columns use the same CASE WHEN conditions so that the conditions are only checked once?. , column_name = 'value'. Group BY on Condition basis. type , Summary: in this tutorial, you will learn how to use the SQL GROUP BY clause to group rows based on one or more columns. select t. "pId" = t2. Using case and group by in select statement not working. CASE: Evaluates the specified condition for each row in the dataset. Case Sensitivity: Be aware of case sensitivity in comparisons. ; ELSE: Optional, specifies a default result if no conditions are met. SELECT CASE testStatus WHEN 'A' THEN 'Authorized' WHEN 'C' THEN 'Completed' WHEN 'P' THEN 'In Progress' WHEN 'X' THEN 'Cancelled' END AS Status, CASE testStatus WHEN 'A' Applying GROUP BY when using multiple CASE WHEN. ; result: The value or calculation to return when the condition is true. Example 3: Using a WHERE Condition with SUM and GROUP BY. When value in first and second row in the same column is the same or when there is value in first row and NULL in second row. In this article. id = tags. From your question, it would be useful to know the contents of either test or have, i. 4. id = k. data have; input ID : $4. (Case When col1 > col2 Then col3*col4 Else 0 End) as SumSomeProduct From Group By Case When col1 > col2 Then col3*col4 Else 0 End SQL Group by using different conditions and multiple columns. entry_date = & entryDate GROUP BY TYPE; It gives In these cases, using the GROUP BY clause with multiple columns unfolds its full potential. contactid HAVING COUNT(DISTINCT t. Modified 10 years, 10 months ago. contactid FROM YOUR_TABLE t WHERE flag IN ('Volunteer', 'Uploaded') GROUP BY t. ip_adddress, (select t2. e. group by e_id, CASE WHEN w_id in ('1','2') THEN w_id ELSE 0 END but neither of these are grouping my data as I'd like. 1 select * from (select id, SUM(case when [order] = 1 and [date] is null then 1 when [order] = 2 and [date] is null then 1 when [order] = 3 and [date] is null then 1 else 0 end) score from test group by id) scores where score = 3 SQL case statement on multiple rows. Whether you have this logic at the front end or in a stored procedure is up you and probably depends on a lot of other things. ; default_result: The count case with multiple conditions in same row. Another way to write this query would be to utilize the ELSE clause. SELECT FileName, Count(*) FROM tablename WHERE asofdate='10-nov-2009' and isin is null GROUP BY FileName You can call multiple analytic functions inside your inner query, with different partition-by clauses, instead of just one; and then work from those - combing the analytic ranking of the grades and steps within the case expressions. group by in case of nested cases with conditions on different tables. Ask Question Asked 3 years, 5 months ago. multiple case SQL query retrieve single row as multiple column. select case when s. See the example below. GROUP BY model. SELECT (CASE WHEN t. It contains WHEN, THEN & ELSE statements to execute the different results with It’s particularly useful when we need to categorize or transform data based on multiple conditions. ID = T2. SELECT Type ,SUM(CASE WHEN Year = '2010' THEN Total ELSE 0 END)'2010 Total' ,SUM(CASE WHEN Year = '2010' THEN Total ELSE 0 END)*1. 3. Ask Question Asked 9 years, 4 months ago. "Declarative" was intended with respect to the physical access to the data (the "pointer chasing" that was so prevalent before the RM). Introduction to SQL GROUP BY clause. SQL group by under some conditions. If at most one row can match a prog in your table: select p. . I determine how many rows each method will take and then base my process on that. I have searched this site extensively but cannot find a solution. This works for 2 conditions, but can be extended to 3 or more with more replicas of the data table in the FROM clause and the corresponding comparision conditions. The problem with the SQL I provided was that the numbers are wrong! As per the comments I think the problem stems from joining multiple times which is 1 If the result type of result-expression is a row type, then the syntax represents a row-case-expression and can only be used where a row-expression is allowed. Name = 'B' EXCEPT SELECT distinct ID FROM tblTemp The following query gets the most recent id based on your rules by using a correlated subquery:. It can be CASE expressions allow you to set conditions for your data and use similar logic to if-then statements to search your data, compare the values, and evaluate whether they match If you need a refresher on the GROUP BY clause, read this article on GROUP BY in SQL. prog is null then 0 else 1 end) as it_exists from (select 1 as prog from dual union all select 2 as prog from dual union all select 3 as prog from dual union all select 4 as prog from dual union all select 5 as prog from dual ) p left join mytable t on p. Share. SQL select count with multiple cases. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company If the rows are protected in that way you can do this: SELECT users. zgvqjv qxhjhsov wikgyg oae ubqrj epj pijc vnnwikv vdebq fdx