Why can't I select symbol for OHLCV data type?

Question:

Why can't I select symbol for OHLCV data type? 

Answer:

The OHLCV data type is already aggregated and very compact, because of that we do not split it further by symbol as files would be too small. This can only be chosen by time period granularity (1SEC, 1MIN, 1HR, and 1DAY). This will be shown after clicking on "Select From Table".