Learn how to check if a table with the specified name is present in a particular schema in MySQL, SQL Server, and PostgreSQL. >>>
Monthly Archives: July 2024
Generating a Range of Numbers Between Two Values in SQL
Learn how to generate a range of values in PostgreSQL, MySQL, and SQL Server >>>
Difference Between JOIN and UNION in SQL
Learn the difference between JOIN and UNION in SQL. >>>
Difference Between COUNT(*), COUNT(1), COUNT(column), and COUNT(DISTINCT)
A quick and practical overview of various methods of using COUNT. >>>
Dropping All Database Tables in One SQL Query
Discuss how to drop all the tables in a schema using a SQL script. >>>
Get the First Day of a Month in SQL
Learn how to calculate the first day of a month from a date field in SQL Server, PostgreSQL, and MySQL. >>>
Difference Between CHAR, NCHAR, VARCHAR, and NVARCHAR in SQL Server
Explore the differences among four text data types in SQL Server. >>>
Update Data From One SQL Table to Another Based on ID Match
Learn various ways to update data from one table to another based on ID matching. >>>
Difference Between Stored Procedure and View
Learn the difference between a stored procedure and a view. >>>
Finding the Maximum Value Across Multiple Columns in SQL
A quick and practical guide to finding the maximum value across multiple columns in SQL. >>>