Data Engineering Essentials: Tools and Techniques You Need to Master

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SQL Join Interview question: Different types of SQL joins and describe the output each type produces?

SQL Join Interview question: Different types of SQL joins and describe the output each type produces?

Sreenu Y December 31, 2024

What is the output of below query for all joins?         SELECT T1.* FROM  T1 JOIN T2 ON T1.C1=T2.C1 AND T1.C2&l…

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SQL Question:Write an SQL query that checks for email addresses with at least 8 alphabetic characters before the "@"

SQL Question:Write an SQL query that checks for email addresses with at least 8 alphabetic characters before the "@"

Sreenu Y December 21, 2024

SQL Query:  Write an SQL query that checks for email addresses with at least 8 alphabetic characters before the "…

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SQL Convertion Query using Oracle, MySQL, PostgreSQL and SQL Server

SQL Convertion Query using Oracle, MySQL, PostgreSQL and SQL Server

Sreenu Y December 11, 2024

Write to SQL query to Classify the values in the column based on criteria. For instance, the Name column in the source …

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How to extract the filename from a given file path using different SQL databases: Oracle, MySQL, SQL Server, and PostgreSQL.

How to extract the filename from a given file path using different SQL databases: Oracle, MySQL, SQL Server, and PostgreSQL.

Sreenu Y November 22, 2024

How to extract the filename from a given file path using different SQL databases: Oracle, MySQL, SQL Server, and Postgr…

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Verify phone_number format using ORACLE, MYSQL, SQL SERVER , POSTGRESQL(SQL Interview Question)

Verify phone_number format using ORACLE, MYSQL, SQL SERVER , POSTGRESQL(SQL Interview Question)

Sreenu Y November 07, 2024

In this post, we will explore a common SQL interview question: how to validate the phone number format in the `phone_n…

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