Learn SQL articles

How do I remove duplicate rows from a table in SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> One common problem SQL users face, is having duplicate rows in a table. This can create redundancy in the database, leading to inefficiencies and incorrect analytical results. Fortunately, SQL provides a variety of methods to effectively eliminate these unnecessary duplicates. Understanding

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How do I retrieve records from a table in a specific order using SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> When working with databases, you may sometimes need to retrieve data in a specific order. The SQL (Structured Query Language) language has a built-in functionality for that – the ORDER BY clause. This command allows you to sort the data from

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How do I retrieve records from a table that match a specific list of patterns using SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Structured Query Language, or SQL, is a language used by programmers to interact with databases. This can include tasks such as retrieving, updating, or deleting data. One of the most common tasks that we can do in SQL is to retrieve

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How do I retrieve records from a table within a specific date range using SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL, short for Structured Query Language, is the primary language used for interacting with databases. It allows you to query, insert, update, and modify all types of data stored within your database. In this post, we will discuss how to retrieve

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How do I retrieve the first or last n records from a table in SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Structured Query Language (SQL) is one of the most powerful tools for manipulating data in relational databases. In this post, we’ll delve into a commonly asked question – how to retrieve the first or last ‘n’ number of records from a

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How do I search for specific values in a table using SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome back to another blog post! Today, we’re tackling an essential topic in SQL – searching for specific values within an SQL table. SQL, or Structured Query Language, is a standard computer language for relational databases management and data manipulation. It

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