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Tagged articles - SQL
Found 15 articles tagged with SQL
22
Feb
2022
Select column names with values from SQL Server database
SQL/T-SQL10 titlesFetching column names with its value in T-SQL using built in JSON methods
0
Fetching the data in it's original form from SQL relational database is the most common way of getting the data stored. For example, to get all column from Products table in Northwind database is pretty straight forward.
...read more
28
Nov
2021
Unit of work pattern with Dapper
.NET229 titlesImplementing unit of work pattern with Dapper in .NET 5
0
People often try to compare Dapper and Entity Framework. Although they both have same goal and that is reading and modifying the data against the database, they take completely different approach in doing so and therefore this comparison is not really valid.
Entity framework is more robust as the name says framework, while Dapper is simple object mapper which is down the line set of extension methods on top of the ADO classes which allow easier manipulation with data in the database...read more
25
May
2021
Using interceptors with dependency injection in Entity Framework Core
.NET229 titlesEF Core interceptors via dependency injection in ASP.NET 5
0
I while ago I wrote an article on how to Access multiple databases from the same DbContext in EF Core which relies on interceptors to mutate the SQL query diring execution. This code works just fine and it updates the command prior to it's execution, but it lacks in option to inject registered services to it's constructor as i used new keyword to initialize class instances.
Adding interceptor without dependency injection
...read more
06
Sep
2020
Seeding data in EF Core using SQL scripts
.NET229 titlesAnother way of seeding data in EF Core
0
Not so while ago I wrote an article on Seeding data with Entity Framework Core using migrations. This approach relies on EF Core migrations to ensure seeding of specific data is done only once using __EFMigrationsHistory table to track structural migrations as well as data seeding migrations.
In large number of cases this approach works just fine and you do not need to do any adjustments or add any additional tables, just use migrations mechanism out of the box...read more
23
May
2020
Identifying opened connections for the specific application in SQL Server
SQL/T-SQL10 titlesConnection listing queries in SQL Server
0
Object relational mappers or ORMs are a great tool which can significantly reduce application development time, but if they are not use wisely they can cause bottlenecks and performance issues.
Same goes for dependency injection containers. The lifetime of the components, especially the ones that can cause recurse locks like SQL Server connections must be as short as possible and they should be released as soon as work is done.
...read more
04
Jan
2019
SqlBulkCopy object collection to database table with C#
.NET229 titlesPerforming SqlBulkCopy with collection of objects as a source data
0
Over the time various techniques to manipulate database data have evolved in .NET. Entity Framework is certainly the most advanced one, but for small ad hock applications where you have few inserts to deal with, ADO is still the fastest way to write data to the database...read more
03
May
2018
Reading JSON data in T-SQL on SQL Server
SQL/T-SQL10 titlesExtracting values from JSON string on SQL Server using T-SQL
0
JSON is the most commonly used data fromat nowdays. It is lighter than XML, more readable and it's sindax complies with most OOP C-Like lnguages such as Java, JavaScript and C#.
There is not really many downsides of using JSON, so that is one of the rasons everyone is using it in one way or another.
...read more
28
Apr
2016
Create XML/HTML with T-SQL
SQL/T-SQL10 titlesGenerating XML/HTML output in SQL Server
0
Sending email from SQL is not a difficult to achieve, but generating rich HTML content might be. SQL Server itself is not built as a text processor, first approach would be to build HTML by simple concatenating the string elements.
This approach will work, but over time it will become more and more difficult to maintain especially if you need to add layout elements over time.
...read more
24
Nov
2015
IP address to octets split in TSQL
SQL/T-SQL10 titlesSplit IP addresse into octets in SQL Server
0
In case you need to handle IP addresses in SQL, they are not much useful as string values. To do anything with them rather then just storing and retrieving (checking the ranges for example) you need to split IP address to segments (octets).
The following is modified method I run into online.
...read more
20
Jul
2015
Getting first and last second of the current year, month and day
SQL/T-SQL10 titlesUsing minimum and maximum date time in SQL query
0
Probably the most common error developers make in queries is dealing with date ranges and most of the time it is because of missing the minimum and maximum time of the specific date.
Month
...read more
13
Apr
2015
Dealing with duplicate rows in SQL Server
SQL/T-SQL10 titlesFinding and cleaning up duplicate rows in SQL Server tables
0
In case your data in tables needs to have unique constraint based on more than one value in the row, the proper solution for that would be a composite key.
...read more
12
Mar
2015
Reducing the number of Stored Procedures for the Application
SQL/T-SQL10 titlesApproach to reduce number of stored procedure for the application
0
Nowadays, in the years of ORM, barely anyone thinks about stored procedures, but they are still there and accessing and reading data with ADO and SqlDataReader ist still the fastest way.
Stored procedures are validated, parsed and compiled in SQL server, so these steps are not required to be performed versus plaint text query (which is what entity framework generates for accessing data).
...read more
01
Mar
2015
Super lightweight Data Access Layer returning models from ADO
.NET229 titlesReturn strongly typed objects directly from stored procedure calls
0
Entity framework is an awesome tool for working with database in .net, but sometime you have to get back to old fashion ADO for the performances. The bad thing is that as soon as you get back to ADO, you have to deal with SqlDataReader, DataTable and DataSet classes...read more
24
Feb
2015
Transform comma seperated string to rows in SQL Server
SQL/T-SQL10 titlesUse comma separated string in TSQL
0
Passing complex data to and from stored procedures has always been a tricky one. The most elegant way to pass values to a stored procedure is to use predefined data types in SQL Server...read more
18
Feb
2015
Migrate stored procedures across databases
SQL/T-SQL10 titlesCopy stored procedure from one database to another with T-SQL
0
When working on an app you create all your stored procedures, functions, tables, view and other objects in a development database (or t least it should be like that). A small but annoying problem occurs when you have to migrate your stored procedures to test or production database.
Imagine during development you had let's say 20 stored procedures...read more
.NET
5
Jun
2022
Using dotnet nuget package vulnerability scan in Azure DevOps build
Listing nuget vulnerabilities and controlling build in Azure DevOps
5
May
2022
Protecting static files in ASP.NET Core using custom middleware
Restricting access to specific static content with middleware in ASP.NET Core
20
Dec
2021
Supporting multiple authentication schemes in asp.net core webapi
Using more than one authentication schemes in webapi projects
12
Dec
2021
Controlling the flow of migrations in EF Core
Altering EF Core migrations execution order
28
Nov
2021
Unit of work pattern with Dapper
Implementing unit of work pattern with Dapper in .NET 5
21
Sep
2021
Adding display name to Enum values
Implementing additional values for Enum items in C#
JavaScript
28
Oct
2018
HTML5 localStorage with expiry with vanilla JavaScript
Using HTML5 localStorage with expiry
8
May
2018
Monitoring DOM changes with JavaScript
Handling DOM changes with plain JavaScript
9
May
2017
Non blocking CSS load on the page
Load external CSS files in an async manner
16
Mar
2017
Serialize html form to JSON without using JQuery
Transform user input from HTML form fields to JSON
17
Jan
2016
Copy text value to clipboard using jQuery
Simple sample of using jQuery to copy value to clipboard
11
Jan
2016
Resize image on the client side with JQuery
Reducing the upload sie by resizing image on the client side
SQL/T-SQL
22
Feb
2022
Select column names with values from SQL Server database
Fetching column names with its value in T-SQL using built in JSON methods
23
May
2020
Identifying opened connections for the specific application in SQL Server
Connection listing queries in SQL Server
3
May
2018
Reading JSON data in T-SQL on SQL Server
Extracting values from JSON string on SQL Server using T-SQL
28
Apr
2016
Create XML/HTML with T-SQL
Generating XML/HTML output in SQL Server
24
Nov
2015
IP address to octets split in TSQL
Split IP addresse into octets in SQL Server
20
Jul
2015
Getting first and last second of the current year, month and day
Using minimum and maximum date time in SQL query
Umbraco CMS
2
Mar
2018
Minify HTML output of your pages
Minification of HTML output using ASP.NET IHttpModule
18
Apr
2015
Generate sitemap.xml on the fly in Umbraco CMS
Simple sitemap.xml Umbraco handler
2
Mar
2015
Accessing UmbracoHelper in HttpHandler request
Working with UmbracoHelper and IPublishedContent in HttpHandler
14
Sep
2014
Same page language switching in Umbraco
Land on the same page in different language in Umbraco using Relations
4
Sep
2014
Getting cropped image the smart way
The way to get cropped image URL with option to load original image too
27
Aug
2014
Fastest way to return JSON result from a controller
Resturn JSON in MVC controller action