Learn SQL articles

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL, or Structured Query Language, is a language designed to manage and manipulate databases. Among its many features is the TRUNCATE TABLE statement, a highly efficient but often misunderstood tool. What is the TRUNCATE TABLE statement? The TRUNCATE TABLE statement is […]

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> For those seeking to deepen their understanding of SQL, an encounter with the TRY_CAST and TRY_CONVERT functions is inevitable. These two functions are vital tools within the SQL landscape and unlock a high degree of flexibility when dealing with a variety

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL (Structured Query Language) is a powerful tool that programmers use to communicate with databases. Among the numerous statements and functions available in SQL, the MERGE statement holds a unique position. Often dubbed as the “Swiss Army Knife of SQL statements,”

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In Structured Query Language (SQL), the ORDER BY clause is used to sort the result set in ascending or descending order. Originally, this is based on one or more columns. The ORDER BY clause can only be used in select statements.

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL (Structured Query Language) is a ubiquitous language in the field of Data Analysis used to communicate with a database. Amongst the numerous functionalities in SQL is the OVER clause. To excel in data analysis, understanding enigmatic SQL functions such as

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> The PARSE function in SQL is a powerful tool that aids in converting a string value into a specified data type. This function is especially useful when dealing with date and time strings, or any strings which need to be manipulated

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> ROW_NUMBER is a built-in function of SQL that assigns a unique row number to each record present in the result set. This function counts every record in a result set and assigns a respective unique number to every row, starting with

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In the wide world of SQL (Structured Query Language), the ROW_NUMBER() function serves a vital and versatile role. As a built-in function in most Relational Database Management Systems (RDBMS), ROW_NUMBER() provides an efficient way to number rows in the result-set of

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> The STRING_AGG is a built-in function in SQL Server (starting with 2017) that concatenates the values of string expressions and places a separator between them. This function simplifies the concatenation of strings. Prior to SQL Server 2017, you had to use

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Among the numerous functions in SQL (Structured Query Language), one of the most critical ones is the STRING_ESCAPE function. This is a powerful function that allows developers to escape special characters in text strings, ensuring the correct interpretation and execution of