CODEWITHSUNDEEP
db2timestamp
Vivek
Vivek

Reputation: 2101

DB2 Timestamp select statement

I am trying to run a simple query which gets me data based on timestamp, as follows:

SELECT * 
FROM <table_name> 
WHERE id = 1 
AND usagetime = timestamp('2012-09-03 08:03:06') 
WITH UR;

This does not seem to return a record to me, whereas this record is present in the database for id = 1.

What am I doing wrong here?

The datatype of the column usagetime is correct, set to timestamp.

Upvotes: 9

Views: 124271

Answers (2)

JavaTec
JavaTec

Reputation: 1044

You might want to use TRUNC function on your column when comparing with string format, so it compares only till seconds, not milliseconds.

SELECT * FROM <table_name> WHERE id = 1 
AND TRUNC(usagetime, 'SS') = '2012-09-03 08:03:06';

If you wanted to truncate upto minutes, hours, etc. that is also possible, just use appropriate notation instead of 'SS':

hour ('HH'), minute('MI'), year('YEAR' or 'YYYY'), month('MONTH' or 'MM'), Day ('DD')

Upvotes: 2

Fred Sobotka
Fred Sobotka

Reputation: 5332

@bhamby is correct. By leaving the microseconds off of your timestamp value, your query would only match on a usagetime of 2012-09-03 08:03:06.000000

If you don't have the complete timestamp value captured from a previous query, you can specify a ranged predicate that will match on any microsecond value for that time:

...WHERE id = 1 AND usagetime BETWEEN '2012-09-03 08:03:06' AND '2012-09-03 08:03:07'

or 

...WHERE id = 1 AND usagetime >= '2012-09-03 08:03:06' 
   AND usagetime < '2012-09-03 08:03:07'

Upvotes: 23

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