What is time stamp in Db2?
A timestamp is a seven-part value representing a date and time by year, month, day, hour, minute, second, and microsecond, in the range of 0001-01-01-00.00. 00.000000000 to 9999-12-31-24.00. Timestamps can also hold timezone information. Db2 stores values of datetime data types in a special internal format.
How do you find the difference between two timestamps in Db2?
Calculate difference between two Dates : date(exp) – date(exp1) OR date(exp) -exp1 OR exp-date(exp1) , where exp, exp1 are date or valid string representation of date. The result will be a decimal duration which is decimal(8,0) number represents the difference between two date values as YYYYMMDD.
What is time stamping and what are the types of time stamping?
Timestamping is different types those are digital timestamping, network timestamping, trusted timestamping and etc. Timestamps are a postmark on a letter or ‘in’ and ‘out’ times on a time record.
How do you subtract two dates in Db2?
Subtracting dates: The result of subtracting one date (DATE2) from another (DATE1) is a date duration that specifies the number of years, months, and days between the two dates. If DAY(DATE2) > DAY(DATE1) then DAY(RESULT) = N + DAY(DATE1) – DAY(DATE2) where N = the last day of MONTH(DATE2) .
How does SQL calculate timestamp difference?
To calculate the difference between the timestamps in MySQL, use the TIMESTAMPDIFF(unit, start, end) function. The unit argument can be MICROSECOND , SECOND , MINUTE , HOUR , DAY , WEEK , MONTH , QUARTER , or YEAR . To get the difference in seconds as we have done here, choose SECOND .
What is Sysibm SYSDUMMY1?
As the name implies, SYSIBM.SYSDUMMY1 is a dummy table. It contains one row and one column, which is named IBMREQD and contains a value of ‘Y’. SYSIBM.SYSDUMMY1 is used extensively in SQL examples on the web and in the Knowledge Center.