How To Obtain hierarchical data / Parent - Child relationship

Explain How To Obtain hierarchical data / Parent - Child relationship data

This is a series of articles on hierarchical queries in MySQL:

• Hierarchical queries in MySQL
• Hierarchical queries in MySQL: adding level
• Hierarchical queries in MySQL: adding ancestry chains.
• Hierarchical queries in MySQL: finding leaves
• Hierarchical queries in MySQL: finding loops

See also:

• Hierarchical data in MySQL: parents and children in one query