Transact-SQL (TSQL) is the extended SQL dialect used in Microsoft SQL Server and Sybase. Please also tag with either [sql-server] or [sybase].
3
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0answers
11 views
SQL with SUBSTRING / CHARINDEX
I've got a VARCHAR variable of this kind:
@string = "BLABLA10;GOGOGO30;RES777;ANOTHER;"
(several keyword + number separated ...
2
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0answers
25 views
T-SQL Pbdfk2 (SHA2_256) Implementation
Using my previous function as a base I've come up the following:
...
3
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0answers
55 views
T-SQL Hmac (SHA2_256) Implementation
I'm trying to implement an Hmac in T-SQL using this question as an guide. Please critique this:
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5
votes
1answer
50 views
Working Days DateDiff function
I have a calendar table with a record for every date I need to care about (i.e. 365 records per year), with various meta-information about each date, including the weekday, the fiscal calendar week, ...
1
vote
1answer
20 views
Find foreign key membership including owner in SQL Server
Was hoping someone could sanity-check this SQL statement. I need to find the owner (schema), table, and column on both sides of a foreign key:
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8
votes
0answers
41 views
Find & Delete Duplicate Records on All Tables in current MSSQL Database
The purpose of this code is to search the entire database for duplicate records and produce a script that a user could then run to delete all of the duplicates.
The stored procedure takes the ...
5
votes
0answers
19 views
Finding closest points without duplicates and given distance threshold
Given a bunch of latitudes and longitudes stored as Points, I would like to determine the points that are closest to each point given some maximum threshold in meters. This is my first stab at this:
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4
votes
0answers
136 views
Stored Procedure code shortening and optimization
This stored procedure takes user defined table type as parameter. It contains data imported from an Excel file. Values inside that type are the same as in ...
1
vote
0answers
59 views
Updating datetime fields from UTC to local time zone
I have created an SQL query to update datetime fields from UTC to local time zone. Can someone review this?
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8
votes
2answers
78 views
SQL to find table containing all specified columns
I have the below code to list all tables which have columns DataAreaId and CountryRegionId.
This works, but requires me to ...
26
votes
3answers
2k views
Excuse me, how many of you are new here? Mind if I JOIN you?
I had perceived an uptick in new reviewers around here, and I wanted to see if the data backed that observation up. It's been a while since I've written any SQL, so this was a nice little exercise in ...
4
votes
0answers
23 views
Tag wikis under a certain length
I wrote a SEDE query to list all tag wikis with a body or an excerpt under a given number of characters. I've used this to find empty wikis or wikis with very little information. The tags can be ...
5
votes
1answer
49 views
Searching posts/comments by keywords
I've put together another simple query that allows you to search post/comments with specific keywords. At the moment, only post bodies are checked.
...
0
votes
0answers
38 views
Merge inserted and deleted tables in SQL trigger
I have a table with a Balance column of type decimal(18,0).
I want to get updates to its ...
9
votes
3answers
384 views
Popular questions by view count
I made this query to create a graph of a user's popular questions and the view count on that question. It allows for a minimum of 500 views, and a score of ...
3
votes
2answers
34 views
Percentage of questions that are unanswered or answered - Part 2
I've refactored my previous query and added better checks when selecting the data. The query link can be found here. The formulas used to calculate the two percentages are the same, and can be seen ...
2
votes
0answers
21 views
Trigger that updates counter
I've got the following schema, which can not be modified since it's a problem taken from an exam:
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10
votes
2answers
297 views
Percentage of questions that are unanswered or answered
I put together this simple query which calculates the total percentage of answered questions and unanswered questions. The formulas used to calculate these are shown below:
$$
\text{Answered ...
1
vote
1answer
44 views
Get Next and Previous “Load Day”
I keep looking at this trying to figure if there's a better way. All three functions work, but I wanted to get some insights and ideas from others.
IsLoadDay ...
5
votes
2answers
171 views
SQL procedure with cursor to check if values in table 1 are also in table 2
The problem is that I'm checking if result from cursor exists in CDN.ZamNag table for every iteration. Is there any better way to check if values in table 1 are ...
5
votes
2answers
131 views
Finding questions to answer - Part 2
I've refactored my previous question finder, and added multi-tag support, and support for searching for keywords in the question titles. Essentially, what it does is find questions that could be ...
2
votes
1answer
55 views
Backing up two tables using SQL transactions
I'm using a transaction statement in SQL Server 2012 for the first time.
I want to insert Table1's data in Table1_Backup before ...
3
votes
2answers
252 views
Creating Sequential IDs
I'm using SQL Server 2014 with Visual Studio 2013. When I add a new record, identity column (seed 1, increment 1) "ID" increases by 1, and record added to the database.
My table consist of two rows:
...
4
votes
1answer
39 views
Checking that data has been created in multiple tables
I have 4 tables that I want to check for data. When there are Rows in all the tables, I want to print a message for success. When there aren't any rows in any table I print an error (when 1 or more ...
3
votes
1answer
54 views
Perform SELECT INTO Statement and add Primary Key afterwards
How can I imrpove the performance of this T-SQL statement?
...
6
votes
1answer
422 views
Generate random records for table in SQL
I'm doing a project in ms sql and I have to fill table with random records.
Here is a definition of table:
...
0
votes
1answer
108 views
EF Code First Seed Method for States/Countries Part I
I am working to complete this even further, but here's what I've got thus far...
(See my other post for the definition.)
...
2
votes
2answers
178 views
Haversine formula in SQL
This is an implementation of the Haversine formula in Microsoft Transact SQL.
How can I simplify the function?
...
3
votes
1answer
72 views
Is the usage of SQL Cursor appropriate here?
I'm looking for following kind of feedback:
Firstly, is the use of a cursor an overkill here?
Is there a simpler way to do what I'm doing in SQL?
Could the script go terribly wrong?
I have limited ...
7
votes
2answers
147 views
What are my highest activity streaks?
I have written the following query to figure out activity streaks on a per-user basis. I find it... Ugly... And would love to improve it!
Limitations
Those are explained as commented text at the ...
17
votes
6answers
642 views
Winterbash 2014 “Red Shirt” Estimation
Some fellow code reviewers (hi @Janos!) have been inquiring about a SEDE query to allow to check progress of the Red Shirt "hat" progression.
Try it here!
Background
Red Shirt
cast 5 ...
11
votes
6answers
31k views
Select first value if exists, otherwise select default value
Given an instance of SQL Server, imagine there's a table named Configuration, which has three columns: ID, ...
13
votes
2answers
89 views
Bling Accounting - Badge summaries
A question was raised in chat (hi @malachi) about how you can count the number of badges of a given metal (bronze, silver, gold). This can be hard to do because the medal details are not stored in the ...
3
votes
2answers
86 views
Running validation procedures on a table
I am working on a project that has to parse through a text file and perform validations on certain fields in the file. Some of the validations are basic (i.e. data types), and other's are a little ...
2
votes
2answers
45 views
11
votes
4answers
1k views
LW, MTD, STD, YTD Sales… all in line and looking pretty
That's Last Week, Month-to-Date, Season-to-Date, and Year-to-Date sales.
I have a table-valued function for each one, that takes a date and returns all ...
3
votes
2answers
47 views
Extract last record inserted for each key identifier
I have a table with this schema
ID, int primary key
PathKey, string not null
InsertDate, datetime not null
Value, int not null
In the table there are a ...
5
votes
1answer
54 views
Saving and updating records
I have made two SQL statements as I was unable to figure out how to solve my problem. One is called Product_GetID and the other ...
6
votes
2answers
154 views
Follow up to Top Active Answerers on Stack Exchange site
This is a follow up to Top Active Answerers on a Stack Exchange site
Actual SEDE Query --> Top Active Answerers on site
Do I have a good understanding of the ...
3
votes
2answers
286 views
Top Active Answerers on a Stack Exchange site
I created this query back in January to find the top active answerers on Code Review and thought that it might be a good idea to get other opinions on my SQL coding using a database that we can all ...
3
votes
3answers
251 views
Basic T-SQL to compare two same length strings
I've come up with the following T-SQL to compare similar same length strings.
Example usage would be:
OCR returns a value which is expected to be in the database.
PATINDEX is used to check the ...
3
votes
1answer
122 views
Query for combining two SELECTs to get active users and 1 inactive user
What this query does:
Gets multiple users with the first select in the union; those are the active users.
But when a user is ...
2
votes
1answer
32 views
Optimizing sales report stored procedure
I need to optimize the following stored proc. Please let me know of any techniques or modifications that I can make to optimize this piece of code.
The procedure is for a report that needs to run ...
4
votes
1answer
128 views
Unduplicated counts over various dimensions
I'm working with some data on college students, which has a unique key of SSN, Campus, ...
4
votes
2answers
147 views
Delete from multiple tables using temp table variable
I'm previewing the data I'm about to delete, but this SQL looks a little redundant. Is there a better way to write this?
...
6
votes
3answers
547 views
SQL Stored Procedure Get Distinct and Update
The idea is to show how many times a user (by EmployeeID) is in the TblTableList and then update the ...
6
votes
3answers
280 views
Sorting three Decimal values
I have been given three values: @lLength, @lWidth, @lHeight. I need to take these ...
5
votes
2answers
115 views
Calculating a time in a time zone from multiple dates in SQL
I'm trying to calculate what time a certain time in a time zone is today, so I can schedule something to happen at that time in that time zone.
I've got a table with what I have termed the Nominal ...
6
votes
1answer
269 views
5
votes
1answer
66 views
SEDE query to find users with exactly one post in a particular tag
I'm doing some research for a meta post on Gardening.SE (where I'm a pro tempore moderator). I'm using the Stack Exchange Data Explorer (SEDE) to find information about first time users who post ...
