Illustrate the result of the above statement with the help of the following snapshot:Ĥ. We can manipulate the interval values by using various arithmetic operators like +, -, *, etc. Now(), now() - INTERVAL '2 year 1 hours 10 minutes' AS 'Last year at current time 1 hours 10 minutes' Consider the following statements and snapshots to know the time of 1 hour 10 minutes ago of the last two year at the current time. Consider the following statements and snapshots, to begin with, examples of interval values:Ģ. Examples to Implement Interval in PostgreSQLġ. The value returned by the extract function retains double precision. to manipulate the PostgreSQL interval value.Ĥ. The PostgreSQL provides various functions like TO_CHAR(), justify_days(), justify_hours(), justify_interval() and EXTRACT() etc. YEAR, MONTH, DAY, HOUR. MINUTE. SECOND. YEAR TO MONTH. DAY TO HOUR, DAY TO MINUTE, DAY TO SECOND, HOUR TO MINUTE, HOUR TO SECOND, MINUTE TO SECOND, etc.ģ. We can restrict the set of stored fields by using any of the following words in case of the interval type:

The value of days and months is stored as integers, and the value of the second’s field might contain some fractions.Ģ. PostgreSQL internally stores the interval values as seconds, days and months. How Does Interval Function Work in PostgreSQL?ġ. Direction: The direction can be an empty string or ago.Unit: It can be any of the following:(decade, century, millennium), (week, month, year), (minute, hour, day), (microsecond, millisecond, second,) abbreviations like d, m, y, etc., plural forms like days, months, years etc.Quantity: Quantity defines a number that can be either positive or negative so that we can add + or – sign as well.We can write the interval values with the help of the following syntax: In the case of the interval types, the valid range for p is 0 to 6. P: defines the number of fraction digits that should remain in the seconds. Hadoop, Data Science, Statistics & others

Postgres week number