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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1answer
49 views

Updating 3 columns conditionally on a database table

I need to run this script to update the value of 3 columns based on certain conditions. Right now, this is what I have: ...
3
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1answer
51 views

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 ...
3
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1answer
335 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
92 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 ...
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68 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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0answers
71 views

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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0answers
167 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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1answer
101 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
100 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 ...
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1answer
101 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/...
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2answers
372 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 ...
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2answers
102 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 ...
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2answers
510 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 ...
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2answers
77 views

Replacing birth year column values with calculated age value

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 ...
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2answers
44 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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2answers
34 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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1answer
141 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 ...
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137 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 ...
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1answer
39 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 ...
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2answers
129 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
424 views

Merge table stored procedure

I wrote a stored procedure that will do a merge of two tables: ...
6
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1answer
2k 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 ...
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2answers
83 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
59 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 ...
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1answer
62 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
55 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
126 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-...
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2answers
58 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
1k 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
56 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. ...
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1answer
119 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
92 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 ...
14
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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
890 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 ...
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1answer
140 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
57 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
343 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], ...
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2answers
3k 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. ...
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1answer
72 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 ...
3
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1answer
206 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: ...
5
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1answer
206 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 ...
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2answers
114 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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1answer
49 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 ...
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1answer
219 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. ...
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1answer
39 views

Selecting data from a table based on value in another table (SQL server)

I am using the northwind example database to brush up my SQL server skills. I want to select all the products ordered by the customer with the customer id 'Folko'. My idea is to join the Orders ...
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1answer
56 views

Simulating a hospital

I have a Java program which simulates a hospital. For this, I have two different databases, MySql and MS SQL, with tables to manage the patients. The user can decide which database he wants to use. ...
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2answers
58 views

SQL Server Multi Term Wildcard Search on Multiple Fields with Ranking

I've built up this search query for searching airport locations on multiple fields, but I don't particularly like the way it works in practice. Even though it is fairly cool. I'll be reverting back to ...
3
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1answer
44 views

Comparing columns values and change their places by condition

There are three simple tables. Actor, Film, Film_actor. ...
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1answer
160 views

Report which connects to SQL Server via ODBC

I've created a report in Excel which connects to SQL Server via ODBC and I wrote some VBA to allow parameters to be passed in optionally. At this point everything works as expected but I'm curious to ...
3
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1answer
76 views

Creating SQL Indexes on Large Tables

I currently have a table with about 29 million records. The table currently has no indexes. However, I would like to build a clustered composite index built on three columns. When I attempt to add ...