About this document
Understanding Boolean Expressions in SQL by Ajverson is a document available to read on EtoBox.
1) Boolean expressions in SQL consist of predicates, boolean operators, and parentheses to control order of execution. Predicates are the basic building blocks and return TRUE, FALSE, or UNKNOWN. 2) Common comparison predicates like X = Y are used to demonstrate how complex boolean expressions can be constructed from multiple predicates. 3) A table shows example predicates and the resulting truth values they return for different values of X, such as NULL, 0, and 1.
- Author
- Ajverson
- Language
- EN