query – Page 4 – CodeRavo

Extracting Substrings in SQL

Understanding Substrings in SQL SQL provides powerful string manipulation functions, and a common task is to … Extracting Substrings in SQLRead more

When working with databases that store date ranges, it’s common to need to query data based … Querying Data within a Date RangeRead more

In SQL, a full outer join is used to combine rows from two or more tables … Emulating a Full Outer Join in MySQLRead more

Introduction Often, when working with databases, you need to find records where a specific column contains … String Matching in MySQLRead more

Introduction to Filtering Pandas DataFrames Pandas is a powerful library for data manipulation and analysis in … Filtering Pandas DataFrames with 'in' and 'not in' ConditionsRead more

Removing Duplicate Rows in SQL Duplicate data can creep into any database over time, impacting data … Removing Duplicate Rows in SQLRead more

Introduction to Attaching SQLite Databases SQLite is a lightweight, self-contained SQL database engine that’s widely used … Exploring Tables and Data in Attached SQLite DatabasesRead more

When working with dates and times in SQL Server, it’s essential to understand the different formats … Working with Dates and Times in SQL ServerRead more

Combining Results with UNION and UNION ALL In SQL, you often need to combine the results … Combining Results with UNION and UNION ALLRead more

Retrieving Table Names in SQL Databases When working with relational databases, it’s often necessary to programmatically … Querying Database Table Names with SQLRead more