Decode in where clause oracle. Jan 3, 2011 · DECODE (TAB2.

Decode in where clause oracle The maximum number of components in the DECODE expression, including expr, searches, results, and default, is 255. If yes can u give small sample Sur Jan 3, 2011 · DECODE (TAB2. If yes can u give small sample Sur Aug 7, 2021 · I'm trying to analyze an existing oracle query. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Apr 2, 2012 · For appeals, questions and feedback about Oracle Forums, I have to use DECODE function in where clause. . Specifically, it seems to be ignoring a nested Decode and just returning the default value. However, in this case i cannot equate the value of r. SELECT id_segmento AS Segmento, Decode (id_segmento , '1' , 'a', 'b' ) FROM mapchile. May 5, 2011 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. customer_id = pcustomer_id. tab2 Oct 14, 2016 · For appeals, questions and feedback about Oracle Forums, decode in where clause in oracle sql. 0. The decode expression is similar to the case_expr (see case_expr::=). Oracle doesn't know what to do with that query in the case statement (and neither do I): are you trying to test for existence? are you looking for a specific value? Also, it's silly and confusing (not to mention unnecessary, in this case) to use both case and decode in the same statement. The architect needs to justify what they are saying. id,0),0,0,1)+ D Jan 29, 2020 · Don't use decode(). Decode with AND clause oracle. You could use the DECODE function in a SQL statement as follows: SELECT supplier_name, DECODE(supplier_id, 10000, 'IBM', 10001, 'Microsoft', 10002, 'Hewlett Packard', 'Gateway') result FROM suppliers; The above DECODE statement is equivalent to the following IF-THEN-ELSE statement: Hi all We can use decode function in the Select columns as well as Group by Columns as well as Having Clause Can we use decode function in the where clause also. May 10, 2010 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. ORDER_SR_NO) I have indexes on all columns as in the where clause, but still find that indexes are not being used. Nov 19, 2021 · Alternately, you can have the decode return the correct data type by doing an explicit cast. But if the query is written without the DECODE with a single column in the where clause, the index used (In either case). Hot Network Questions Which is larger? 4^(5^9) or 5^(6^8) There should be no performance hit. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Jul 11, 2005 · Hello, We are experiencing an issue with a Select statement that uses Decode in the Where clause. Dec 18, 2009 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. – May 11, 2010 · For appeals, questions and feedback about Oracle Forums, Decode in Where clause. DECODE can check equality operators only where as CASE can support all relational operators DECODE can be used in sql only where as CASE can be used in SQL AND PL/SQL CASE is better than DECODE. Apr 8, 2020 · The first thing I see is that the WHERE 1=1 condition is not needed. GRP_ID, ?) But given the use case, making the parameter NULL would be a little better. CURRENCY_CODE); is likely to return multiple rows (a value that is being selected is from a subquery). SELECT 1 "cast(null)" FROM dual WHERE SYSDATE <= DECODE(1,0,cast(null as date),SYSDATE); That will return a row regardless of the session's nls_date_format because the decode will now return a date data type and you're comparing a date to a date. Sql Query trying use DECODE in Where ORACLE. customer_id IS NULL; and when pcustomer_id IS NOT NULL then c. We had DECODE a long time before we introduced the CASE function, which is why a lot of people are more familiar with DECODE. For each entry in the array it appends a line to the WHERE clause in the format <name> = '<value>'. Although Oracle treats it as a special case sometimes. If expr is null, then Oracle returns the result of the first search that is also null. Maybe you were better off with the CASE . Jun 8, 2015 · And Decode works in a similar fashion, although I think it's less readable. 2, not 0,2. A simple case expression is like decode. May 23, 2016 · DECODE is a subset of CASE. I had initially thought to show a full breakdown of the decode statement to show where it went wrong. are your trying to get records WHERE status is 7 and start date is null? you can use decode but if used in WHERE clause, the result should be compared to another value or column. Finally, I will provide code for the equivalent transformations in SQL Server, PostgreSQL, and MySQL. Let’s take some examples of using the DECODE() function to see how it works. The statement where I will be using this is something like:select * from v_viewname v where v. Using Case statement in Where clause in Oracle SQL. first_name LIKE firstname Mar 7, 2012 · It seems that there is a problem with my DECODE statement since i observed that when using the DECODE function, a column is equated before the DECODE. Repeating 'Pune' in the argument list is the cost of doing the translation you asked for. How to use Oracle's decode function in where clause. This also has one selector followed by a list of key-value pairs. How do I merge the multiple If Else using decode in PL/SQL? 0. Modified 8 years, 6 months ago. ORDER_TYPE, 'TRAN1', TAB1. Since we can't use decode directly in pl/sql, the plan is to use 'select decode() into variable from dual'. Apr 16, 2018 · Oracle Database searches for the first WHEN THEN pair for which expr is equal to comparison_expr and returns return_expr. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Sep 22, 2014 · So I've been trying to deal with a poorly optimized/created database. status = (CASE WHEN status_flag = STATUS_ACTIVE THEN 'A' WHEN status_flag = STATUS_INACTIVE THEN 'T' ELSE null END) AND t. CLASSIFICATION_TRIP is 'T' then i should use <= else i use >. If expr is null, then Oracle CEP returns the result of the first search that is also null. Is it the right behavior and is it Jun 1, 2011 · Hi all We can use decode function in the Select columns as well as Group by Columns as well as Having Clause Can we use decode function in the where clause also. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Oct 14, 2016 · For appeals, questions and feedback about Oracle Forums, decode in where clause in oracle sql. If you object to any changes, you may request that your account be closed by contacting oracle-forums-moderators_us@oracle. If yes can u give small sample Sur Jun 19, 2015 · Hi,I need to use decode condition in where clause in such a way that if the respective column is null then consider the corresponding column for eg Fee_dateFee_refund_date10-OCT-05 12-NOV-05 11-J Aug 28, 2015 · Your interpretation is correct. It is bespoke Oracle syntax. The next is that DECODE('NOINR','NOINR', (SELECT CURRENCY_CODE FROM FND_CURRENCIES WHERE CURRENCY_CODE <> 'INR', ACR. Otherwise, Oracle returns null. last_name, t. Hi all, Mar 6, 2020 · Note: If you have Oracle 12c or higher, you can use LIMIT instead of rownum. 2. Hot Network Questions Nov 26, 2013 · How to use Oracle's decode function in where clause. Oracle does not need to materialize inner queries before applying outer conditions -- Oracle will consider transforming this query internally and push the predicate down into the inner query and will do so if it is cost effective. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group In a DECODE expression, Oracle CEP considers two nulls to be equivalent. Sep 30, 2016 · I'm interesting that how can I use if-then-else statement or any control structure in where clause in Oracle. Jul 11, 2005 · Hello, We are experiencing an issue with a Select statement that uses Decode in the Where clause. It treats a NULL expression and NULL search as equal (so NULL == NULL). com. ORDER_SCH_ID, 'TRAN2', TAB1. 0 I'm trying to write a function that retuns the number of days between two dates, minus holidays, minus saturdays and sundays. tab1 = b. May 23, 2008 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. first_name, t. If expr is equal to a search, then Oracle Database returns the corresponding result. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Nov 1, 2015 · First of all, 0. ) decode() is rather hard to follow. SQL in Oracle: Decode function not working in this scenario. A simple boolean or is equivalent. – Justin Cave Jun 19, 2015 · Hi,I need to use decode condition in where clause in such a way that if the respective column is null then consider the corresponding column for eg Fee_dateFee_refund_date10-OCT-05 12-NOV-05 11-J Jun 19, 2015 · Hi,I need to use decode condition in where clause in such a way that if the respective column is null then consider the corresponding column for eg Fee_dateFee_refund_date10-OCT-05 12-NOV-05 11-J Sep 29, 2017 · WHERE clause is the section where you write your conditions to get your specific records from the table/s. Instead of the expression above, you could use this decode logic: Aug 6, 2024 · This tutorial provides a comprehensive guide to using the SQL DECODE() function in Oracle. Technical questions should be asked in the appropriate category. CASE vs DECODE. 1. Rajesh123 Oct 14 2016 — edited Oct 14 2016. 2 should be written as 0. Mar 4, 2011 · UPDATE temp SET col1 = DECODE(update_var, 1, update_value, col1), col2 = DECODE(update_var, 2, update_value, col2) Also, as a bonus, it'll handle the possible situation where the update variable is set to something other than one or two! Hi, Can i use Decode in Where clause Please Do the need full on the same. I think what you wanted was this: Aug 17, 2016 · Conditional Where clause with decode Hello there,Good Day!I have a query at hand:SELECT mf_trn_id FROM mf_transactions WHERE MF_TRN_AGENT_CD = :b1 AND MF_TRN_PAN_NO = :b2 AND MF_TRN_SCH_CD = :b3 AND MF_TRN_COMP_CD = :b4 AND MF_TRN_CD = :b5 AND MF_TRN_FOLIO = Decode(:b5, 'P', mf_trn_folio, :b7). BETWEEN is unnecessary assuming that datet is not in the future. SELECT (columns list) FROM AGREEMENT A WHERE A. A) Use DECODE() function to make data more meaningful. segmento but in this case I will obtain an 'a' when id_segmento is equal to '1', I need it to be 'a' even when the string id_Segmento contains the '1', kind of like and like statment. duration to the DECODE since if the value of R. Ask Question Asked 8 years, 6 months ago. So, this example will return 1: SELECT DECODE(NULL, NULL, 1, 0) FROM DUAL; The CASE statement treats NULL values as Oct 23, 2007 · Hi Tom, I'd like to use a decode statement that returns multiple values instead of a single value. How can I do it? Decode with AND clause oracle. Jul 10, 2009 · Hi, I'm working with Oracle9i Enterprise Edition Release 9. 772002 May 11 2010 — edited May 11 2010. Aug 20, 2007 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. But most importantly, decode is not suitable for this case. employid, t. name, 1, 0) = 1; From the 19c documentation: In a DECODE function, Oracle considers two nulls to be equivalent. Mar 14, 2013 · CASE might help you out: SELECT t. Always use proper, explicit, standard, readable JOIN syntax. SUM(NVL()) is not needed, because NULL values are ignored. enterprise in decode(v_in_enterprise, 'ALL', v. Your continued use of Oracle Communities Jul 17, 2015 · Miracle173, thank you for clarifying, I am using ORACLE SQL, For this particular script, I am not using SQL PLUS, just firing off a script (f5 in TOAD) and running, then inserting the parameter for &Industry. See the following locations table in the sample database: Jun 1, 2023 · Oracle DECODE Function with NULL Values. Per the docs: DECODE compares expr to each search value one by one. DECODE only "looks" at one thing, the first argument: DECODE([the thing I'm looking at], [then the possible values]) whereas CASE could have many things to consider, CASE WHEN x=1 THEN Jul 11, 2005 · Hello, We are experiencing an issue with a Select statement that uses Decode in the Where clause. 7. I am not well versed in Oracle and I'm bit confused by the use of this NVL function in DECODE function Select DECODE (DECODE(NVL(tab. enterprise, TABLE(f_stringto The DECODE function can be used in Oracle/PLSQL. Example. GRP_ID = DECODE(?, 0, A. can not use the case when function since oracle version am using is a bit old. Thank you! Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group Sep 21, 2018 · How to use Oracle's decode function in where clause. In this case (and all other cases where you could use decode), you can use case, which is more flexible and a more verbose so it is easier to read too. Dec 13, 2017 · I was thinking of converting an if block into decode in my pl/sql function. Viewed 1k times 1 I want to use parameter in my query but I Sep 19, 2014 · I know oracle is strict when it comes to aggregate functions but when I tried something like this in one of the subqueries, I got the ouptut as expected: SELECT DECODE(NVL(SUM(Qty1),0),0,SUM(Qty2),SUM(Qty1)) FROM test_v WHERE item_no = 1234567; But strangely when I modified it to this: Dec 7, 2023 · This has no else clause, so returns null for values of exam_id other than 1, 2, 3, or 4. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. If they are really claiming that using any function anywhere in the where clause prevents an index being used, you could point out that sysdate is a function, for example. ACCOUNT = 545 AND A. You could use the DECODE function in a SQL statement as follows: SELECT supplier_name, DECODE(supplier_id, 10000, 'IBM', 10001, 'Microsoft', 10002, 'Hewlett Packard', 'Gateway') result FROM suppliers; Sep 1, 2014 · let's say table 1 is named table1, my select would be: select id_number, code, start_month, qtr1, qtr2, qtr3, qtr4---the 1st 3 columns will be selected from table1 whereas the value for qtr1-4 should come from using the decode function. Thanks, Sanjeev. like below select * from tab1,tab2 where a. Probably you will require more sophisticated filtering - different operators, explicit data type conversion, bind variables - but this is the general idea. Hi all We can use decode function in the Select columns as well as Group by Columns as well as Having Clause Can we use decode function in the where clause also. As I mentioned above, the Oracle DECODE function is an exception to other functions in how it handles NULL values. ----- Update -----Evaluation of the decode( decode( . I want to use as: when pcustomer_id IS NULL then WHERE c. 0. But for now pressed for time, perhaps later. Hi All, All are welcome. The DECODE function can be used in Oracle/PLSQL. I will also compare DECODE() to CASE WHEN in Oracle and help you understand when to use each function. Jul 7, 2010 · CASE is a statement and DECODE is a function We can use the CASE in the where clause and can not use the DECODE in the where clause. 748821 Feb 24 2010 — edited Feb 24 2010. DECODE(theRow, 'P', 1,'D',2,'T',3, (goes on a bit)) AS Jan 5, 2021 · Never use commas in the FROM clause. status FROM employeetable t WHERE t. (This does not affect performance, however. Hi, The requirement is like this: Mar 28, 2020 · As DECODE handles NULLs appropriately, the following should work: SELECT * FROM table1 t WHERE DECODE(:var, t. I know you can use decode within a where clause, but I was wondering if there was any way you could use the value in the where clause after decoding in the selection. tab2 For appeals, questions and feedback about Oracle Forums, I have to use DECODE function in where clause. Aug 17, 2016 · Conditional Where clause with decode Hello there,Good Day!I have a query at hand:SELECT mf_trn_id FROM mf_transactions WHERE MF_TRN_AGENT_CD = :b1 AND MF_TRN_PAN_NO = :b2 AND MF_TRN_SCH_CD = :b3 AND MF_TRN_COMP_CD = :b4 AND MF_TRN_CD = :b5 AND MF_TRN_FOLIO = Decode(:b5, 'P', mf_trn_folio, :b7) In other words, the DECODE() function never evaluates a search (si+1) when a previous search (si) equals e. Hi all, Feb 24, 2010 · For appeals, questions and feedback about Oracle Forums, Using DECODE in WHERE clause. If no match is found, then Oracle returns default. 2. So task_id is compared with a search value one by one. business_unit = (CASE WHEN source_flag = SOURCE_FUNCTION THEN 'production' WHEN source_flag = SOURCE_USER THEN 'users' ELSE null END) AND t. The existing if block is as follows: if var1 = 'a' then var2 := 'x'; elseif var1 = 'b' then var2 := 'y'; else var2 := 'z'; end if; the replacement decode could be: May 5, 2017 · I don't think its possible to use a list with decode in this way. There isn't any place for an IN clause in a DECODE. The Feb 8, 2010 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. Basically, I have a case sorta like this. Oracle DECODE() function examples. :-) – Feb 17, 2009 · These changes document Community specific rules and Oracle’s content moderation practices including use of automated tools, appeals process, and Oracle’s contact details. Since time immemorial (almost), SQL has supported case expressions -- which are more flexible than decode() and available in all (real) databases. wivc wpwswc wgk jul hmr zozswme holw cwqo xiojev oqgam