Substring returns characters from a string, starting from the specified position, or index. Index values start with the number 0. Examples: substring('This_is_a ...

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Robert Kelly is managing director of XTS Energy LLC, ...

Andriy Blokhin has 5+ years of professional experience in public accounting, personal investing, and as a senior auditor with Ernst & Young. Erika Rasure is globally-recognized as a leading consumer ...

Abstract: Nowadays, SQL (Structured Query Language) is widely taught in professional schools and colleges across the globe. SQL is an efficient domain-specific language for managing and querying ...

There are six stages of compiling a program: Variables are checked to make sure they have been correctly declared and contain the correct data type. Operations are checked to ensure that they are ...

A complex sentence communicates more than one idea. One part (the main clause) is like a simple sentence: it can stand on its own. The other part (the minor clause) gives more detail about the simple ...