Could you maybe calculate a range of date values that encompasses the period you want and use BETWEEN on the raw date column? I'm thinking something along the lines of:
SELECT DATE_KEY FROM DATE_DIM WHERE ORACLE_DATE BETWEEN TRUNC(:b1) AND TRUNC(:b1) + .99999 ; but like, more elegant. 8^) HTH, -Roy Roy Pardee Programmer/Analyst SWFPAC Lockheed Martin IT Extension 8487 -----Original Message----- Sent: Monday, April 08, 2002 10:57 AM To: Multiple recipients of list ORACLE-L I've got the following SQL statement that is running very long on a nightly data load. The problem is the TO_CHAR function which is preventing me from using the index on this small (20,000-row table). This is an 8.0.4 database so it is not possible for me to use make this a function-based index. The problem is that the date field has minutes, etc. included and those need to be eliminated before the comparison can be made. That's why I can't just eliminate the TO_CHAR from both sides of the equation. Isn't there a way that I can pull this function out of the select statement and do it in a preceeding statement? Then I could just pass in both variables to this statement without the TO_CHAR and use my index. Is this realistic? How, exactly could it be done? SELECT DATE_KEY FROM DATE_DIM WHERE TO_CHAR(ORACLE_DATE,'DD-MON-YYYY') = TO_CHAR(:b1,'DD-MON-YYYY') SQL> desc date_dim; Name Null? Type ------------------------------- -------- ---- DATE_KEY NOT NULL NUMBER(5) ORACLE_DATE NOT NULL DATE DATACOM_DATE NUMBER(6) DATACOM_REVERSE_DATE NUMBER(6) DAY_OF_WEEK NOT NULL VARCHAR2(30) DAY_NUMBER_IN_MONTH NOT NULL NUMBER(3) DAY_NUMBER_OVERALL NOT NULL NUMBER(9) WEEK_NUMBER_IN_YEAR NOT NULL NUMBER(3) WEEK_NUMBER_OVERALL NOT NULL NUMBER(7) MONTH NOT NULL VARCHAR2(30) MONTH_NUMBER_OVERALL NOT NULL NUMBER(7) YEAR NOT NULL NUMBER(5) WEEKDAY_IND NOT NULL CHAR(1) LAST_DAY_IN_MONTH_IND NOT NULL CHAR(1) DATA_WAREHOUSE_MOD_DATETIME NOT NULL DATE DATA_MART_MOD_DATETIME NOT NULL DATE SQL> select oracle_date from date_dim where rownum=1; ORACLE_DA --------- 01-JAN-70 Thanks in advance for any help. Cherie Machler Oracle DBA Gelco Information Network -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Pardee, Roy E INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
