logo
Tags down

shadow

SQL: Alternative to COALESCE() function that groups all values into one column


By : Atul Singh
Date : October 16 2020, 06:10 PM
I wish this helpful for you You can't use a coalesce here as there might be more than one value to return
UNION is the best solution (not UNION ALL because blanks)
code :
select column1 from mytable
UNION
select column2 from mytable
UNION
select column3 from mytable


Share : facebook icon twitter icon

VB.NET: How do I use coalesce with db column values and nullable types? Or is there a better solution?


By : Simon Helyar
Date : March 29 2020, 07:55 AM
like below fixes the issue I'm trying to do something similar to what's described here, but with nullable types. , It is silly, but you have to cast the Nothing when you set it:
code :
Dim availableUnits As Int32? = If(myDataReader.IsDBNull("UnitsInStock"), _
                                  CType(Nothing, Int32?), _
                                  myDataReader.GetInt32("UnitsInStock"))

Coalesce values in one column based on another column


By : Karthick Iyer
Date : March 29 2020, 07:55 AM
may help you . How do I coalesce values in a column grouped by another column? , Use aggregation. Here is one way:
code :
select col1, max(col2)
from t
group by col1;

Derive a column value in parent groups using values from child groups in SSRS


By : 蛍橋青草
Date : March 29 2020, 07:55 AM
wish of those help best way is to calculate the required values by self joining (in my case ) reporting table and also have dedicated column for total for groups and use those columns in SSRS.

MySQL coalesce non-null values conflicting with additional case when and coalesce statements - not sure how to fix


By : user2347688
Date : March 29 2020, 07:55 AM
may help you . Moved the ifnull into a latter part of the query (the last permanent table):
code :
ifnull(member_id_lh2,0), 
            ifnull(trigger_name_lh2,0),
            ifnull(trigger_record_id_lh2,0), 
            date_trigger_event_lh2,
            ifnull(ladder_name_lh2,0),
            ifnull(ladder_value_lh2,0),
            ifnull(ladder_change_lh2,0),
            ifnull(config_active_lh2,0),
            ifnull(trigger_active_lh2,0),

In SQL, is there something like COALESCE() to qualify Column values which are NOT NULL?


By : modstan
Date : March 29 2020, 07:55 AM
hope this fix your issue One option is to use ROW_NUMBER() with a Case expression to establish your ordering.
code :
SELECT *
FROM
    (
       SELECT OrderNumber,
        Status,
        ROW_NUMBER() OVER (PARTITION BY OrderNumber ORDER BY 
                           CASE Status 
                               WHEN 'NotStarted' THEN 1
                               WHEN 'Released' THEN 2
                               WHEN 'In-Process' THEN 3
                               WHEN 'Sold' THEN 4
                               WHEN 'Completed' THEN 5 
                               END DESC) as Order_Status_Rank
        FROM OrderTable
    ) dt
WHERE Order_Status_Rank = 1;
Related Posts Related Posts :
  • Access denied error while connecting to MySQL in App in Azure App Service
  • My POST request is working with Node.js but not with API
  • I am creating a database for a community to store details of all the members. What would be the best way to create such
  • Select between range of values in 2 tables
  • What's the Best way to select the min value from several columns and then calculate their sum?
  • MYSQL: AND statement causing expected results to not display
  • mysql - Select where image_url=0 but return all rows?
  • Create function that returns a "SELECT" statement result
  • Subquery returns more rows
  • Unrecognized Keyword and Statement Type (FROM)
  • Optimise mysql query with group by
  • FOREIGN KEY ON DELETE SET NULL
  • Avoid duplicate data in mySQL table
  • Why is SQL Count(*) returning 1 from an empty table?
  • Symfony 4 - How to dynamically add field in an entity?
  • Pivot table for single table in Laravel
  • MySQL inconsistently altering name of indexes associated with foreign keys on InnoDB tables
  • SUM from different column and from different table and show result in one row of each year
  • MySQL query too much slow
  • How to count quantity of duplicate data?
  • Find the number of unique users who have visited at least two different countries per site
  • Restarting Mysql Database in Cpanel on a shared Server
  • Can we create sql DB server backup on different database(free database)?
  • Convert time into range in SQL
  • MariaDB 10.3 implicit cast of string parameter to integer column fails
  • UNION ALL and SELECT
  • How to access redmine log folder inside a docker after a docker-compose?
  • mysql json where clause
  • What is causing the error "Column does not match the value count at row 1"?
  • MySQL Return JSON array index based on property value
  • Finding users with at least one of every item
  • Multi-event tournament standings
  • MySQL delete duplicate records but keep more than one (ex. 5)
  • Display the users that have not yet created projects this month in specific city (count=0)
  • Have a Syntax problem related to an event which I cannot find
  • How can I get all the devices from database table whose RAM is in between 1 MB to 2 GB?
  • Slow query for join tables
  • RDS Upgrade Fails despite prepatchcompatibility showing no errors
  • MySQL query really slow as loading benchmark
  • How to improve query speed in mysql query
  • Count values of MySQL
  • How to copy values from one table to other table with some additional data
  • Why my WHERE and COUNT clause do not work?
  • How to update SQL on JOIN
  • MySQL: Use select in update query
  • Selecting rows that are within 2 hours from current time
  • SQL Query Including Joins
  • How does one update MySQL database periodically separate from website
  • How data backup is handled in production via Docker
  • Sphinxsearch: 1064 can not use HAVING with attribute not related to GROUP BY
  • MySQL root password reset -bash: syntax error near unexpected token `('
  • Laravel where query for getting record if the difference of two fields is not 0
  • Group or eliminate duplicates fields in columns
  • How to get latest data inserted in mySQL?
  • How to reduce select * from table_name query execution time for table with 200k+ records?
  • How to only add specific value to a column?
  • How does an incoming request to a nodejs server get handled when the event loop is waiting for a DB operation
  • SQL query to get count of unique combinations in the table - MySql
  • Can I speed up this VBA function that queries an (AWS) mysql db?
  • Do we need to pass only int values for the 'INT' type data in MYSQL select query?
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk