#sqltips 搜尋結果
💡 SQL Interview Question: 👉 How do you add a PRIMARY KEY constraint to an existing table in SQL? 📩 DM us today | 📷 Visit: ashokit.in/courses/oracle… #SQLInterviewQuestions #SQLTips #PrimaryKey #DatabaseConstraints #ALTERTABLE #BackendDeveloper #JavaDeveloper #SpringBoot
Why? Filter data BEFORE joining to reduce the number of rows being matched. Small change = massive performance boost when dealing with large datasets. What's your favorite SQL optimization trick? #SQL #DataAnalytics #SQLTips #DatabaseOptimization #MuhmmadMahmoudHusain #Query
COUNT(*) tells you how many rows exist. COUNT(column) tells you how many values are NOT null. Simple but important. #SQLTips #DataQuality #TheSQLQueryCoach youtube.com/playlist?list=…
💡 SQL Interview Question: 👉 How do you display employees along with their managers? 📩 DM us today | 📷 Visit: ashokit.in/courses/oracle… #SQLInterviewQuestions #SQLTips
In this short reel, we break down the top SQL DOs and DON'Ts that every backend developer, data engineer, and software engineer MUST know in 2025. Watch till the end — the DOs will save your next project. #SQL #SQLTips #SQLDeveloper #BackendDeveloper #DataEngineering #FullStack
A relational database is just organized tables connected with logic. SQL is how you talk to that logic. #Databases #SQLTips #TechLearning youtube.com/playlist?list=…
𝗟𝗲𝘁’𝘀 𝗶𝗻𝘀𝗲𝗿𝘁 𝗱𝗮𝘁𝗮 𝗶𝗻𝘁𝗼 𝗼𝘂𝗿 𝗦𝗤𝗟 𝘁𝗮𝗯𝗹𝗲 😊 ✅ INSERT INTO… to add your records ✅ SELECT… to check your insert ✅ Quick tips to avoid common mistakes What was the first mistake you made while inserting your data? #SQLServer #SQLTips #dataanalytics
Use keyboard shortcuts to activate multiple cursors and edit multiple lines of code at the same time in SQL Server Management Studio. wiseowl.co.uk/microsoft-sql-… #SQL #sqltips #sqltraining #SQLServer
Let’s create a database and a table in two ways: ✅Database: Under Object Explorer OR manually CREATE DATABASE ; ✅Table: Under Object Explorer OR manually CREATE TABLE… Simple, beginner-friendly, and easy to practice. More SQL tips loading..😊 #SQL #DataAnalytics #SQLTips
Day 21/30 – Discount Impact Analysis Used SQL CASE WHEN logic to compare full-price vs. discounted sales. Discounts don’t always mean higher profits. #SQLTips #EcommerceAnalytics #RevenueOptimization
Day 20/30 – Monthly Revenue Growth Rate Used SQL window functions to calculate month-over-month revenue growth. A clean dataset + smart query = deep insight. #SQLData #RevenueGrowth #Analytics
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