OBIEE - Week First day and last day

If we need to get week start date from a particular table,just use the below code:

TIMESTAMPADD(SQL_TSI_DAY,- DAYOFWEEK(MIN(“Dim – Date”.” Date Column”)) + 1, MIN(“Dim – Date”.” Date Column”))

For Week End Date,follow the below code:

TIMESTAMPADD(SQL_TSI_DAY, 7-DAYOFWEEK(MAX(“Dim – Date”.” Date Column”)), MAX(“Dim – Date”.”Date Column”))

DAYOFWEEK returns an integer in the range of 1 to 7. A value of 1 represents the Monday.