The interpretation functions evaluate the contents of input text fields or expressions, and impose a specified data format on the resulting numeric value. With these functions, you can specify the format of the number, in accordance with its data type, including attributes such as: decimal separator, thousands separator,and date format.
The interpretation functions all return a dual value with both the string and the number value, but can be thought of as performing a string-to-number conversion. The functions take the text value of the input expression and generate a number representing the string.
In contrast, the formatting functions do the opposite: they take numeric expressions and evaluate them as strings, specifying the display format of the resulting text.
If no interpretation functions are used, QlikView interprets the data as a mix of numbers, dates, times, time stamps and strings, using the default settings for number format, date format, and time format, defined by script variables and by the operating system.
All interpretation functions can be used in both load scripts and chart expressions.
使用每个函数的下拉列表可查看每个函数的简短描述和语法。单击语法描述中的函数名称可了解更多信息。
