Raj: The date column has a timestamp value as well. By using the TRUNC function, you are getting all dates regardless of the time value (i.e. 12:01 AM, etc.) . When dealing with DATE datatypes it is always a good practice to use the TRUNC function on the columns to prevent the time of day portion of the date from being considered in the query. You can also make the TRUNC function part of a constraint or trigger, or create a general trigger, to ensure that only the date is placed in the column, and if a time is inserted, then it will be uniform time of , say 12:00AM.
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