I am trying to combine two queries . and I want it so there is one table with one column for s.id and the next columns are VAL columns for each respective date. Where a value is not available for a give s.id on a specific date it should show NA. Answer I supppose you are looking for conditional aggregation
Tag: sql
How to do MAX COUNT so Query returns 1 Result SQL
I have the following query: Which returns the following results: Id EmailDomain UserCount 1 @yahoo.com 1 1 @gmail.com 4 2 @hotmail.com 1 3 @aol.com 1 3 @comcast.com 1 I need the Ids and the Email Domains for a later query, but I don’t want multiple email domains. So I want my results to look like this: …
Does Adding Indexes speed up String Wildcard % searches?
We are conducting a wildcard search on a database table with column string. Does creating a non-clustered index on columns help with wildcard searches? Will this improve performance? Proposed Index: for this query Currently using Microsoft SQL Server 2019. Answer Creating a normal index will not help(*), but …
Not getting data when trying to create multiple inner join on 2 columns from the same table
I have a table and data like below: Employee: LeaveRequest: LeaveUpdateLogs: Now here I want to calculate statistics as below for a particular department: Total number of requests sent and received for DepartmentId 100. But I am confused here for getting data for “Sent” and “Received” …
Modify query so as to add new row with sum of values in some column
I have table in SQL Server like below using below code: How can I modify my query in SQL Server so as to add new row with sum of values in col2? So I need something like below: Answer You could use ROLLUP for this. The documentation explains how this works. https://docs.microsoft.com/en-us/sql/t-sql/queries/s…
Sort column values in a particular way
I have 2 tables: I want to get average of points for each student and each course and sort the result by Student ID and Course in order (Mathematics,Physics and Chemistry). The output should be the following: For each Student the course order should be (Math,Phys, Chem) and also it should be ordered by Studen…
Could not find control ‘DropCity’ in ControlParameter ‘City’ ERROR
Context: I am trying to nest two dropdownlist(ddl) inside a gridview, the first ddl is called “Ciudad” and the second one is called “Comuna”, I want that according to the “Ciudad” I choose the “Comunas” change to that corresponding “ciudad”. but I ge…
Oracle SQL Developer – group by and count within specific date
SQL noob, trying to get some help grouping by unique name, providing a count, filtered for only start dates during 2021. This is what I have so far, and why I’m getting lost. my_table: Trying to get count of the Name, filtered for only 2021 start dates. This is what I want my output to look like: My cod…
Using parent SQL column in subquery
Good morning. I’m trying to pull the username of the user from the column in to_id. Is there. It’d be simple if I was just filtering on to_id, but I also need records from another column from_id. I’ve attempted doing a UNION to get around this issue, but it only pulls records from user.id 3 …
How can I merge two SQL tables and then append the result to a third?
Say I have the following three tables: Table 1 Table 2 Table 3 What is the most efficient way using SQL to merge Tables 1 and 2 together and append the result to Table 3 in order to get the following result (but leave 1 and 2 as they are)? Table 3 after operation Answer Just insert a cross join