concept

CH column metadata: omie.continuous_trades.file_date

Trading day of the OMIE file the row comes from (trades_YYYYMMDD). With line_no it identifies the row: OMIE gives trades no id and repeats identical lines for real executions (several fills of the same size in the same second), so do not de-duplicate on the other columns.

# `omie.continuous_trades.file_date` Trading day of the OMIE file the row comes from (trades_YYYYMMDD). With line_no it identifies the row: OMIE gives trades no id and repeats identical lines for real executions (several fills of the same size in the same second), so do not de-duplicate on the other columns. - **category**: dimension