如果只需要索引中包含的值，而不需要读取这些行。
If the values contained in the index are all that is required, the rows are not read.
然而，如果每个不同的索引值都有许多重复的行，而所关联的表是高度群集的，那么通过索引添加的连接成本可能很低。
However, if there are many duplicate rows per distinct index value, and the associated table is highly clustered, the added costs of joining through the index can be slight.
该方法接受5个参数：行索引、列索引、单元格值、电子表格键和工作表键。
This method accepts five arguments: the row index, the column index, the cell value, the spreadsheet key, and the worksheet key.
XISCAN 使用路径值对（/book/price,29） 来检查索引，并返回其中价格为 29的文档的行ID。
The XISCAN probes the index with the path-value pair (/book/price, 29) and returns the row IDs for documents where the price is 29.
第20行访问栈顶(栈顶的索引为- 1)作为lua字符串，打印消息，然后从堆栈中删除该值。
Line 20 accesses the top of the stack (the top of the stack has an index of -1) as a Lua string, prints the message, and then removes the value from the stack.
第20 - 26行只是将参数转换为色彩值，大小和索引属性。
Lines 20-26 simply convert the arguments passed into the correlating values for the color, size, and index properties.
针对每个选取的资料行，指示索引是要以递增或递减顺序排列此资料行的值。
For each column you select, indicate whether the index arranges values of this column in ascending or descending order.
取得值，指出发生事件之储存格的资料行索引。
RowIndexGets a value indicating the row index of the cell that the event occurs for.
要求两个索引值来查找数据：列索引和行索引，和其他一样都是从0开始。
It requires two indices to locate an element: a column index and a row index, both of which are zero-based like everything else in LabVIEW.
如果您通过表的行索引或列索引检索值，将无法设置返回值。
If you retrieve the value by means of the table's row index or column index, you will not be able to set the return value.
如果您通过表的行索引或列索引检索值，将无法设置返回值。
If you retrieve the value by means of the table's row index or column index, you will not be able to set the return value.
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