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Validating date in oracle

Examples: NULLIF(‘A’,’B’) results in A NULLIF(‘A’,’A’) results in NULL NULLIF(2,3) results in 2 NULLIF(2,2) results in NULL NULLIF(‘2’,2) results in an error NULLIF(2,’2’) results in an error Syntax: The coalesce function returns the first non-NULL value of the expressions in the list. If all expressions evaluate to NULL then NULL is returned.

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Reminded me to go back and review an Oracle conversion we'd done and sure enough I found 3 places where people had used TO_DATE and we're losing timestamp data. “31/9/2010”, “31/09/2010” – September has 30 days only 10. “31/6/2010”, “31/06/2010” -June has 30 days only 9. [1-9] # 01-09 or 1-9 | # .[12][0-9] # 10-19 or 20-29 | # .3[01] # 30, 31 ) #end of group #1 / # follow by a "/" ( # start of group #2 0? [1-9] # 01-09 or 1-9 | # .1[012] # 10,11,12 ) # end of group #2 / # follow by a "/" ( # start of group #3 (19|20)\\d\\d # 19[0-9][0-9] or 20[0-9][0-9] ) # end of group #3 The above regular expression is used to validate the date format in “dd/mm/yyyy”, you can easy customize to suit your need. “32/1/2010” , “32/01/2020” – day is out of range [1-31] 2.

I believe we can do it in value sets with validation type as special we can do this. Regards Ritu" id="ctl00_m_m_i_ctl00_gr_ctl01_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1697945" /Set first parameter a Low range and second date parameter the high range." id="ctl00_m_m_i_ctl00_gr_ctl03_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1698257" / than the from date. this will give u the yr part from the from_date parameter and u can give he condition accordingly. This query is modified based on: select rownum from dual connect by rownum<20 Regards Alex Zhang" id="ctl00_m_m_i_ctl00_gr_ctl23_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1699874" /even i tried ur query. I tried it on Sql Developer." id="ctl00_m_m_i_ctl00_gr_ctl25_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1699910" /1. Create a Parameter To date set range as Low dummy - using $FLEX$ get the year from FROM Date , add months , some thing like this, replace sysdate with $FLEX$ ADD_MONTHS(LAST_DAY(TO_CHAR(TRUNC(SYSDATE, ' YEAR'), ' DD-MON-YYYY')),11) Suresh Kumar" id="ctl00_m_m_i_ctl00_gr_ctl27_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1699908" / You may try this out 1. Create a Parameter To date set range as Low dummy - using $FLEX$ get the year from FROM Date , add months , some thing like this, replace sysdate with $FLEX$ ADD_MONTHS(LAST_DAY(TO_CHAR(TRUNC(SYSDATE, 'YEAR'), 'DD-MON-YYYY')),11) Suresh Kumar I am getting 25 rows in TOAD, 10 rows in SQL Developer and 1 row in SQL*Plus client. If the application returns less rows, it will be a problem Thanks, Balaji" id="ctl00_m_m_i_ctl00_gr_ctl29_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="1699993" /Where do you want to write these validations?

Continue Reading → One of the most mindboggling values in the Oracle database is the NULL value. Examples: NVL(‘A’,’B’) results in A NVL(NULL,’B’) results in B NVL(1,2) results in 1 NVL(NULL,2) results in 2 NVL(‘A’,2) results in A NVL(1, ‘B’) results in an error The last example results in an error because ‘B’ cannot be converted to a number.

But you need to work with NULL values (which are no… Syntax: If expr1 contains a NULL value, then replace it with the value of expr2 The NVL function lets you substitute a value when a null value is encountered.

“29/2/2007”, “29/02/2007” – 2007 is not leap year, only has 28 days 4.

“1/13/2010”, “01/01/1820” – month is out of range [1-12], year is out of range [1900-2999] 3.

“31/4/20100”, “31/04/2010” – April has 30 days only 8.