Only deterministic functions can participate in deterministic expressions 只有确定性函数可以加入确定性表达式。
2.
The column must be a computed column that is defined with a deterministic expression 该列必须是由确定性表达式定义的计算列。
3.
Deterministic expressions that do not contain float expressions are called precise 不包含浮点表达式的确定性表达式称为精确表达式。
4.
Deterministic expressions always return the same result any time they are evaluated with a specific set of input values 在使用特定的输入值集对确定性表达式求值时，它们始终返回相同的结果。
5.
Only precise deterministic expressions can participate in key columns and in where or group by clauses of indexed views 只有精确的确定性表达式才能加入键列，并包含在索引视图的where或group by子句中。
