(index-by dataset index-column-name)Identifies the column that should be used as the index for the dataset. Useful when functions that use the index to perform their operations, cannot auto-detect the index column. This can happen if there are more than one time-based column; or, if it is not clear that any column contains time data.
Identifies the column that should be used as the index for the dataset. Useful when functions that use the index to perform their operations, cannot auto-detect the index column. This can happen if there are more than one time-based column; or, if it is not clear that any column contains time data.
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