Tagged: Data Science

How to Capitalize the First Letter of a String in MySQL

When working with text data in MySQL, you may encounter strings with inconsistent capitalization. For example, a database might contain values such as: grizzliesmavericksCAVALIERSSpurshawKsnets For reporting, dashboards, applications, and data-cleaning workflows, you may want...

How to Get the First Day of a Quarter in MySQL

Get the First Day of a Quarter in MySQL, Quarterly reporting is a common requirement in business analytics. Sales teams compare Q1 with Q2, finance departments track quarterly revenue, and analysts often need to...

How to Add Months to a Date in MySQL

Add Months to a Date in MySQL, Working with dates is a routine part of data analysis. Whether you’re calculating a subscription renewal date, projecting a sales period, or determining a future reporting date,...

MySQL Limit the Number of Characters Returned

MySQL Limit the Number of Characters Returned, you may sometimes need to truncate a string and return only a specific number of characters from a column. For example, suppose a table contains team names...

How to Remove the Time from a DATETIME Column

Remove the Time from a DATETIME Column, you will often encounter values stored as DATETIME, containing both a date and a time. For example: 2024-05-19 23:10:04 Sometimes, however, you only need the date portion:...

How to INNER JOIN on Multiple Columns in MySQL

mysql inner join multiple columns, sometimes one column isn’t enough to identify the relationship between two tables. Imagine a basketball database where the same team has a Guard, Forward, and Center. If you join...

How to Select the Last N Rows in MySQL

When working with MySQL databases, you may need to retrieve the last N rows from a table. This is a common requirement in data analysis, reporting, dashboards, application development, and database administration. For example,...