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Microsoft Certified: Power BI Data Analyst Associate · Microsoft
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Según la documentación de Microsoft, una de las técnicas para mejorar el rendimiento es reducir la cardinalidad de las columnas. La columna IoT DateTime tiene cardinalidad muy alta porque cada fila tiene un timestamp único (fecha + hora + segundos exactos). Al dividirla: La columna Fecha tendrá muchos menos valores únicos La columna Hora solo tendrá 24 valores posibles Esto reduce drásticament
Data type for this field is currently set to "Date/Time", setting data type to just "Date" would result in losing the "Time" part of the information which is required in the analysis
No, we need the time in the analysis