Questions tagged [sql-server]
Microsoft's SQL Server is a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. It originated from the Sybase SQL Server codebase, which is why both products use the extension of SQL called Transact-SQL (T-SQL).
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SQL Server Express 2017 INSERT SELECT Performance Issue [closed]
The current problem description is as follows:
I have uploaded two files on OneDrive.
File 1: "script.zip"(1.5 MB) Link is:
https://1drv.ms/u/s!AuV9gXqFVffxhEQgLpnrQ79O0cf8
File 2: "...
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17 views
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Loop Through bitarray to retrieve subsets of that bitarray
Objective:
I want to loop through a bitarray and store subsets of that bitarray in a table.
Context:
I have a bitarray with 48 elements where each element represent one hour. I want to look back 24 ...
1
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1answer
77 views
Inserting data into SQL-Server table dynamically
I know I can do all this via SSMA quite quickly, but I wanted to see if I could do it efficiently in PowerShell myself as a little project.
Basically, the entire script takes tables from an Access ...
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1answer
55 views
SQL Stored Procedure to export specified data
I'm currently using a stored procedure(sproc) to export to Excel. The sproc is being passed ...
2
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0answers
64 views
Insert items from one table that do no exist in the other one [closed]
The insert query below must insert the items not present in the Articolo table by importing them from Importazione, and must update the items in the Articolo with those present in the Importazione. To ...
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One class for MySQL and MSSQL Queries
EDIT BELOW
I am trying to create resusable classes for MSSQL and MySQL queries (later also Update and Delete queries). I tried it doing the OOP-way. Here is my result:
Einstellungen.vb:
...
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118 views
Stored procedure that adds row-level auditing to a table
I'm looking for any suggestions on how to improve my T-SQL for this procedure. It works okay, but I'd like to get advice to improve it from more experienced SQL developers. This procedure adds 4 ...
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28 views
Document purchasing
I have created a ASP.NET Core WEB API service and I am using EF core for communication with a database. Now, I am looking for an efficient design of my database.
At this moment I have three tables ...
1
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1answer
53 views
Calculate NPS in a stored procedure
We collect customer surveys and one of the questions is the dreaded "How likely are you to recommend our service?" question from which we calculate a Net Promoter Score. (I hate this calculation, but ...
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1answer
60 views
SQL Query to get parent parts of materials using Recursive CTE
The intent of the query is to filter out certain materials to get to a list that will then be run through a recursive CTE to drill up through the BOM to the 0 level assembly.
P_Parts_CTE is filtering ...
4
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1answer
87 views
Retrieving a product's sold quantity
I've written a view to retrieve each product's sold quantity and four week sales average by Branch/Route/...
2
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2answers
53 views
Stored procedure to implement a search filter
I've implemented a stored procedure for a search process SQL Server 2008. I'm not sure if everything I created is correct. Also I'm wondering if this code has any leaks or vulnerability on SQL ...
6
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2answers
90 views
Find how much reputation a user had on a given date
I saw this question on MSE and went ahead and wrote a solution to it:
https://meta.stackexchange.com/questions/313561/determining-users-reputation-as-of-particular-date
This calculates the ...
3
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3answers
104 views
Slow SQL Server performance with multiple PreparedStatement loop
I have a need to update thousands of database records at a time. I am using a loop to generate the necessary PreparedStatement updates, but am hoping for a more ...
1
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1answer
31 views
Worst Query performance issue on date calculation
I have a stored procedure that is taking more than 2 hours to complete and I noticed the below SQL is taking close to 25 mins for updating a million+ values.There are multiple steps like this and all ...
2
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1answer
30 views
Query to find instances of two types of events occurring more than one second apart
I have 3 tables on my database: BusinessObject and CustomEvent, and EventType. ...
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0answers
42 views
ContactBook console based app
I wrote this simple contact book app. It helps the user to store and retrieve contact information. The app uses a SQL database server to store all the user data. One significant fact is that the db ...
4
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2answers
28 views
Select recordIDs for Bill of Materials
I have a hierarchy of parts in my database. For example, one part (call it 0010102-0112-315) is a resistor. It's used in a billion different top-level assemblies. ...
3
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0answers
43 views
Reading Database, scraping Barchart and uploading prices to DB
This is my first real excursion into Python, coming from C#. I wanted to see if my code is well-formatted and efficient.
The following will read the needed codes from a Database Table, then submit ...
6
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0answers
103 views
Modeling tabular structure in MSSQL to store data like Excel sheet applying Column inheritance
I've created this database structure to store tabular information (it's a simplification of my real structure but enough to show the point). In it I have Sheets and ...
1
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1answer
37 views
Ledger query using window functions
This is a ledger kind of table, initial amount is when the movement is null and all transactions on it is based on the Waste_Seq
the query take the last entry (id) based on the movement and change ...
5
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2answers
98 views
Combining SQL Tables into One Table in New DB with Similar Fields
I have a SQL Server Database filled with Reports all having the same schema.
What I've done is created a .NET application to automate the process of adding all reports to a new table.
How can the ...
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2answers
67 views
4
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0answers
276 views
Fastest way to insert rows in mysql vs sqlserver (large dataset)
I'm looking for any possible improvements that could be made to run the mysql piece of code faster.
I created a simple test winform application that creates two docker databases :
Sqlserver on linux ...
3
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2answers
76 views
SQL Server - Iterate, aggregate, and insert
I'm trying to find an efficient way to aggregate data for reporting. Let's say I need to aggregate the following data in 5-second intervals:
...
2
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1answer
55 views
SQL Query to check if 100+ (or Dynamic) columns in table is null
Let assume a table has more than 100 of columns & I want to display all the rows when all of its columns (Col1, Col2, ..., ColN) are nulls except for the column(s) I mentioned (PK).
This is just ...
0
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1answer
43 views
Query to show each sites stock transfer history between all other sites
The below query is used to return a dataset for a SSRS report. It works fine and is quick enough but I am looking for any improvements that could be made.
The client has asked to see all transfers ...
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2answers
54 views
Displaying a single record based on DocID
I have a table with ~900,000 records. I need to display a single record based on DocID using this query. The record is the latest record that got modified by another program.
This piece of query run ~...
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3answers
115 views
SQL query to classify and count logged messages
I have an SQL query that fetches some stats, and those stats are displayed on a dashboard. The dashboard runs this query every 15 seconds to fetch the most up-to-date data.
The query is very CPU-...
4
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2answers
56 views
Inserting two rows that are almost identical to each other
I'm trying to make test data for an application I'm writing, and some of my test data is very repetitive, involving inserting a row and then inserting another row that is identical except for one ...
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2answers
108 views
Insertion of big TXT file into Sql Server
The code posted below reads 500000 lines from a txt file and imports the lines read in a Sql Server 2014 database, the code works correctly but it takes too much time (even 40 minutes), especially ...
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1answer
53 views
SQL query to return a set of calculated values per site from multiple tables
I have written the below and am seeking any way that I could improve its performance.
...
5
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0answers
50 views
The seasoned Zombie sniper: a query to find unanswered questions with specific tags
The query (on SEDE)
This query builds upon the previous and includes the suggestions by rofl as well as the now mentioned activity index.
...
11
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1answer
83 views
The sniper: a Zombie searcher for specific tags
Sometimes, it's not enough to know what the easy prey is. You also need to know whether you will be able to hunt it down. What good is an almost turned haskell zombie if you cannot read the functional ...
13
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1answer
1k views
A wounded Zombie finder, or: how to find the almost dead undead?
The Zombies are on their way to eat our statistics. Fortunately, we have a way to get rid of them: our votes. However, we need to find them first. The /unanswered section is too large and contains ...
3
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1answer
185 views
Implementing RecordSet-like class in C#
From the outset, let me state that I'm working with some older technology. I'd rather use Entity Framework, but I have to use what the client is using if I want to get paid.
I am converting some old ...
1
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1answer
61 views
Query result as an HTML table
I am not a expert on php html. I built a website 2 months ago, and realized I using lot of php query result on web. Is there any approach without while my query result on multiple times
...
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2answers
49 views
CTE Query and DateTime Matching
I have two tables (they are defined below and you can use the SQL below to build them)
...
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1answer
60 views
T-SQL query outer apply with nested subqueries
I have the following 3 tables, and I don't have the option to modify them.
[Logs] table with [log_type], ...
3
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2answers
584 views
Retrieving data from SQL DB based on user input
I wrote this to connect to a local DB using my local login credentials. It pulls back card information based on the user's input.
...
1
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1answer
68 views
SQL report of hazards for selected processes
I've written some code in VBA to help our R&D department. I've moved all of the redundant and static information into a database for them to look up and then generate a report from.
I've ...
2
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0answers
136 views
Matching entities in SQL Server to replace iterative Python script
I have a SQL (MS SQL Server) database of ~22 million companies (called target_db in my code). For example:
...
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0answers
59 views
SQL Server database cleanup, need to drop stored procs, foreign keys, and tables, and?
We have a SQL Server 2008 database that has some old tables and stored procedures that need to be dropped. We want to keep the newer tables, but just clean up the old no longer used objects.
My task ...
5
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1answer
193 views
App for providing accounting solutions for clients
I have a VB6 app that has existed for more than 7 years to which I have a few clients using it for their accounting solutions. Now my problem is that a particular client has grown so big with a 15GB ...
2
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2answers
91 views
T-SQL simplify repeated query unions for each day of the week
I've created the T-SQL code below to get the next nearest datetime value during the next 7 days.
The ScheduleDetail table schema is:
...
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0answers
18 views
Renumbering main articles and associated articles
Product consist of at least 1 or more articles. Nummer always consists of 3 parts separated by dots. The main article, which always exists, has ...
1
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1answer
45 views
Update Trigger (Comparing Descriptive string), as well as checking for valid updates
I have an audit table EpisodesHistory. One of the fields that gets copied is eDescription. I expect ...
1
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1answer
85 views
Ontario Health Card mod 10 validation
An example of the business rules are here.
Does this code implement those rules correctly? Note that you will have to derive the rules from the example.
...
