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SQL: difference between PARTITION BY and GROUP BY
# SQL: Understanding the Difference Between PARTITION BY and GROUP BY 📊 Are you confused about the difference between `PARTITION BY` and `GROUP BY` in SQL? 🤔 Don't worry, you're not alone! These two clauses may seem similar at first glance, but they act
Can a foreign key be NULL and/or duplicate?
# Can a Foreign Key be NULL and/or Duplicate? 🤔🔑💥 Are you confused about the use of NULL values and duplicate entries in foreign keys? 🤷♀️ Don't worry, you're not alone! Many developers find this topic puzzling, and it's essential to understand the i
How can I search (case-insensitive) in a column using LIKE wildcard?
### 🌳 The Wild Search: Case-Insensitive LIKE in SQL 🌳 Searching for specific data in a database is like finding a needle in a haystack 🧵🆚. But what if we told you that there's a way to search for data regardless of its casing, making the search proces
SQL query return data from multiple tables
# 📝 How to Get Data from Multiple Tables in SQL: A Complete Guide Are you struggling to retrieve data from multiple tables in your SQL query? 🤔 Don't worry, we've got you covered! In this guide, we'll address common issues, provide easy solutions, and h
SQL join: selecting the last records in a one-to-many relationship
📝 **SQL JOIN: Selecting the Last Records in a One-to-Many Relationship** Are you struggling with selecting the last records in a one-to-many relationship using SQL JOIN? Look no further! In this blog post, I'll provide easy solutions to this common issue
How to select rows with no matching entry in another table?
# How to Select Rows with No Matching Entry in Another Table? 🔍 Have you ever stumbled upon the problem of finding rows in one table that do not have a matching entry in another table? It can be quite frustrating, especially when dealing with a database
Postgres and Indexes on Foreign Keys and Primary Keys
# Postgres and Indexes on Foreign Keys and Primary Keys: What You Need to Know 🎯 **Introduction:** Postgres is a powerful relational database management system known for its scalability and complex query capabilities. When it comes to optimizing your dat
Rename a column in MySQL
# Renaming a Column in MySQL: A Handy Guide 🔄 So, you're trying to rename a column in your MySQL database, but you keep running into roadblocks? Don't worry, we've got just the solution for you! 💪 ## The Road to Renaming 🛣️ You fire up your MySQL s
How to insert a value that contains an apostrophe (single quote)?
# How to Insert a Value That Contains an Apostrophe: Decode the Mysteries! 🔍💡 Have you ever run into the frustrating dilemma of trying to insert a value with an apostrophe 🤷♂️ into your SQL syntax, only to be met with errors? Fear not, my tech-savvy f
How to get the top 10 values in postgresql?
# How to Get the Top 10 Values in PostgreSQL: The Fastest Solution 💪💨 Hey there, tech enthusiasts! 👋 If you've stumbled upon this blog post with burning curiosity about how to fetch the top 10 values in PostgreSQL with lightning speed ⚡, you've come t