Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types.

T-SQL has 30 different data types, as listed in Figure 1, in order of decreasing precedence. Generally speaking, when an operator combines two expressions of different data types, the rules for data ...

In response to previous SQL lessons, TechRepublic members including Michael M. and Jason P. have posted comments requesting a basic explanation of the types of JOINs available in SQL.

The return type of this function will vary depending on the type selected by the index, as well other types in the list of values. CHOOSE returns the data type with the highest precedence from the set ...