您可以使用逻辑运算子来完成这项动作。
您可以使用下表所列的标准逻辑运算子合并或修改搜寻条件。
You can combine or modify search conditions using the standard logical operators listed in the following table.
若要测试位元栏位,判断特定列举值是否存在,请使用布林逻辑运算子。
To test a bit field to determine whether a specific enumeration value is present, use the Boolean logical operators.
除非情况如此,否则布林逻辑运算子就无法抽取栏位中所储存的个别列举值。
Unless this is so, the Boolean logical operators will not be able to extract the individual enumeration values that are stored in the field.
算术和串连运算子优先顺序如下节所述,其优先顺序都高于比较运算子、逻辑运算子和位元运算子。
The arithmetic and concatenation operators have the order of precedence described in the following section, and all have greater precedence than the comparison, logical, and bitwise operators.
算术和串连运算子优先顺序如下节所述,其优先顺序都高于比较运算子、逻辑运算子和位元运算子。
The arithmetic and concatenation operators have the order of precedence described in the following section, and all have greater precedence than the comparison, logical, and bitwise operators.
应用推荐