๐๐ผ๐ผ๐๐๐ถ๐ป๐ด ๐ฌ๐ผ๐๐ฟ .๐ก๐๐ง ๐ค๐๐ฒ๐ฟ๐ ๐ฃ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ ๐๐ถ๐๐ต .๐๐๐ฆ๐ฝ๐น๐ถ๐๐ค๐๐ฒ๐ฟ๐() ๐
If youโve ever watched an EF Core query crawl to a halt trying to load tons of related data at once, Iโve got great news: .๐๐๐ฆ๐ฝ๐น๐ถ๐๐ค๐๐ฒ๐ฟ๐() ๐ถ๐ ๐ต๐ฒ๐ฟ๐ฒ ๐๐ผ ๐ต๐ฒ๐น๐ฝ!
๐ง๐ต๐ฒ ๐ฃ๐ฟ๐ผ๐ฏ๐น๐ฒ๐บ: ๐ข๐ป๐ฒ ๐๐ถ๐ด, ๐๐ฒ๐ฎ๐๐ ๐ค๐๐ฒ๐ฟ๐ ๐๏ธ By default, EF Core tries to fetch all related data in a single, massive query when you use .๐๐ฏ๐ค๐ญ๐ถ๐ฅ๐ฆ(). Itโs like attempting to grab every item on your grocery list in one tripโsure, itโs one shot, but it might slow you down if the bag is too heavy!
๐ง๐ต๐ฒ ๐ฆ๐ผ๐น๐๐๐ถ๐ผ๐ป: ๐ฆ๐ฝ๐น๐ถ๐๐๐ถ๐ป๐ด ๐๐ ๐จ๐ฝ! โ๏ธ .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ() breaks that one giant query into multiple, smaller queries. That means: ๐๐ฎ๐๐๐ฒ๐ฟ ๐ฃ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ: Smaller queries tend to run more quickly. ๐๐ฒ๐๐ ๐ ๐ฒ๐บ๐ผ๐ฟ๐ ๐จ๐๐ฎ๐ด๐ฒ: No more dealing with huge result sets all at once. ๐๐ฎ๐๐ถ๐ฒ๐ฟ ๐๐ฒ๐ฏ๐๐ด๐ด๐ถ๐ป๐ด: Multiple simpler queries are easier to understand and optimize.
See It in Action! ๐
Check out the carousel to compare the code and the resulting SQL outputs. Youโll see:
Before .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ(): One giant query trying to return everything at once. After .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ(): Multiple, leaner queries that fetch data in smaller chunks.
By moving through the images in the carousel, youโll spot the difference in both the C# code and the underlying SQL. Itโs a clear illustration of how .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ() can turn a performance bottleneck into a breeze!
๐ช๐ต๐ฒ๐ป ๐ฆ๐ต๐ผ๐๐น๐ฑ ๐ฌ๐ผ๐ ๐จ๐๐ฒ ๐๐? If your EF Core queries feel slow or bloated, give .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ() a try. Itโs a quick fix that can bring a big boost in responsivenessโno more struggling under the weight of giant queries!
In a nutshell: .๐๐ด๐๐ฑ๐ญ๐ช๐ต๐๐ถ๐ฆ๐ณ๐บ() makes your queries leaner, faster, and easier to manage. โจ