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QueryQuery Syntax

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data....

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Expert Spotlight
Máté Farkas
SQL Server Consultant

Database Expert with 15+ years experience (SQL, Access, Power BI).

Troubleshooting Solution

Problem with Trigger insert

byJohnMac328
63
I am trying to get this trigger to insert the correct data. I seem to be losing the scope_identity …
Article

Dynamic Pivot Procedure for SQL Server

byMark Wills
15
by Mark Wills

PIVOT is a great facility and solves many an EAV (Entity - Attribute - Value) type …
Article

SQL Server Database Health Checks

byRaja Jegan R
An introduction article to discuss about the various Database states for troubleshooting or health check purposes. More articles will be available in this series to see how to troubleshoot each and every states described in this article.
Video
Query data with no SQL code (7) 4m

Query data with no SQL code (7)

byMáté Farkas
1
Section 07: Create a subquery

Course: This course is created for business people or…
Video
Query data with no SQL code (8) 3m

Query data with no SQL code (8)

byMáté Farkas
1
Section 08: Include a subquery into another query

Course: This course is created …
Video
Query data with no SQL code (9) 6m

Query data with no SQL code (9)

byMáté Farkas
1
Section 09: Join subquery to existing tables in a query

Course: This course is …
Post

This is a cool tool to help visualize explain plans in …

byDoug Walton
This is a cool tool to help visualize explain plans in postgres: https://explain.depesz.com/
Post

Sequential or Random Rows in Microsoft Access  Study my …

byGustav Brock
1
Sequential or Random Rows in Microsoft Access
Study my new articles on this topic…
Troubleshooting Solution

Export from SQL to EXCEL with long string

bymcrmg
60
hi,

This is the code I use to export SQL output to Excel


I need to have an Excel with same number of …
Troubleshooting Solution

SQL Server Query for detecting, eliminating outliers from data set.

byrckrch
58
I am having trouble making a SQL Server query for eliminating outliers in a data set (using median …
Troubleshooting Solution

Need help creating SQL for MS Access Query

bypcalabria
35
I need help improving the performance of a query in MS Access which takes about two minutes to run.…
Troubleshooting Solution

Need help migrating from Access to SQL Server

bypcalabria
31
I have a number of date fields in my Access database.  In some cases I store just the date, in other …
Article
Estimate Execution time of DBCC CHECKDB

Estimate Execution time of DBCC CHECKDB

byRaja Jegan R
A clarification of some common doubts about DBCC CHECKDB for Database Administrators. Includes estimated times to repair database corruption's in production databases.
Troubleshooting Solution

Need help converting a MS Access query to MS SQL - Definitely need an expert for this one.

bypcalabria
22
I need to upsize from Access to SQL as my App has become too complex for Access..
so I'm trying to …
Troubleshooting Solution

Need to see which columns got changed from previous entry.

bybfuchs
44
Hi Experts,

I have a table with following columns
ScheduleID long
CaregiverID int
PatientID int
VisitDate …
Troubleshooting Solution

Need to surpress meesages when  IGNORE_DUP_KEY = ON

bypcalabria
24
I thought I had a solution to this yesterday but it turns out that indexing with  IGNORE_DUP_KEY = ON …
Article

A SQL Tidbit: Conditional Aggregates

byKevin Cross
17
As they say in love and is true in SQL: you can sum some Data some of the time, but you can't…
Troubleshooting Solution

I have a sql function which I would like to see if I can produce the same results in an oracle query without using a function

byFairfield
48
I have this function in sql where it can determine the format of a string and would like to be able …
Troubleshooting Solution

Need help using SQL average

bymaximus1974
23
When using AVG, I am getting incorrect average results. According to the raw data, I supposed to …
Troubleshooting Solution

MS Access SQL Question :How do I group certain records by certain rules and generate a reference for that group in SQL.

byAnton Fernando
22
The data table: Bookings (example data):
 
PO WH No Door Booking Date From Booking Date To Booking Time
…

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