Decode in where clause oracle month_no , 1, 200803 , 2, 200804 , 3, 200805 , 4, 200806 , 5, 200807 , 6, 200808 , 7, 200809 , 8, 200810 , 9, 200811 , For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. You do not need coalesce in this query from your question: SELECT * FROM table WHERE COLUMN1 = COALESCE(input, NULL) OR COLUMN2 = COALESCE(input2, NULL) SQL Where clause in ORACLE. EmployeeName, Employee. The maximum number of components in the DECODE expression, including expr, searches, results, and default, is 255. i have a problem in the following query. So, for your code snippet: (CASE WHEN CODE = 'PR' THEN 'El Título de ' WHEN CODE = 'ES' THEN 'El Diploma de ' WHEN CODE = 'PO' AND EQUIV = 85 THEN I am having an issue where I need to make 1 parameter have multiple options, almost like a case statement or decode function. SELECT DECODE(1, 1, '''sample1'', ''sample2'', ''sample3''', For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. Thanks, Oracle/PL SQL/SQL null comparison on where clause. Introduction to Oracle DECODE() function. Then filter it in the outer query. To get substring indexing with Oracle Text you will need a CONTEXT index. If you want to find all the exam results with A or B grades, you can place the select above in a subquery. You could try the months_between function. Thank you! How can I have decode in my where clause? I For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. This is what i wrote and it erred out. In the following The purpose of the Oracle DECODE function is to perform an IF-THEN-ELSE function. Please sign in to comment. Thank you! case or decode in when clause of case statement. Question 2:- Syntax of the Decode Function. Use decode in sql query. The reason for this is that the SQL is processed in steps. What's likely happening is THIS is returning more I try to get something in Oracle, if the commission is greater than 0. You are writing throw-away code For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. process_id=1 and d. 1. Thanks, Sanjeev. Per the docs: DECODE compares expr to each search value one by one. The ANSI standard method is CASE; however, for your purpose, COALESCE() is the right function and easy to use. 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 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) Conditional Where clause with decode; Breadcrumb. consolidate where clause For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. SQL "case when" query. status FROM employeetable t WHERE t. 0. Example :Decode(exists(select 1 from emp e where e. I will also compare DECODE() to CASE WHEN in Oracle and help you understand when to use each function. * from change_order co order by row_number() over (partition by order_no Since the requirement is based on data type, you could just negate the numeric columns in your decode; if col1 is numeric and the others are text then: ORDER BY decode(in_sort_column, 'col1', -col1, 'col2', col2, 'col3', col3); But this is going to attempt to convert the text columns to numbers. Hi all 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 How to use Oracle's decode function in where clause. I want to use the CASE construct after a WHERE clause to build an expression. The question is Why? Sure I've coded around the issue but I'd like to understand if this is an oracle bug or just a quirk of the DECODE function. current_req_status = :block1. Follow edited Aug 27, 2020 at 23:08. Decode() in Oracle. Using decode to define "where" clause. Thank you! We are experiencing an issue with a Select statement that uses Decode in the Where clause. Please give me the sample code For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 756197 Feb 25 2010 — edited Feb 25 2010. Specifically, it seems to be ignoring a nested Decode and just These changes document Community specific rules and Oracle’s content moderation practices including use of automated tools, appeals process, and Oracle’s contact details. ; How can I do it? I have two tables test1 and test2. That expression should be morphotropic(;)) So, assuming stardard oracle's employee schema, managers are: select * from emp e where exists (select emp_id from emp where e. Ask Question Asked 8 years, 6 months ago. Your usage is equivalent, but DECODE has much wider usage. attribute2, 'STONE', 0, xfer. Thanks in advance. Improve this Oracle Database searches for the first WHEN THEN pair for which expr is equal to comparison_expr and returns return_expr. This will prevent use of any index, For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. If there are no matches, the value is 0; if there are matches, then the first clause is met and the return value is 1. attribute10)) matl_val In the above code matl_val is alias name i need to use that one in where clause as where matl_val > 0 is this possible or anyother way can anyone help me. Thank you! I have a oracle query and part of it is calculating some value using DECODE. How to add decode inside of the WHERE condition? 0. 3. Viewed 1k times 1 I want to use parameter in my query but I can't handle with it. Ask Question Asked 11 years, 6 months ago. If default is omitted and no matches are found, then NULL Decode with AND clause oracle. how to decode with multiple conditions with same condition with diff result. id),true,10003,10004). 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 I have this code for x_eo in ( select decode(mod(card_name_id,2),0,1,1,2) e_o, count(*) nr from rp_Deck where session_id=p_session_id_in and posi I see this a lot too. IsFrozen FROM employee, employeerole, roledef WHERE employee. 793965 Dec 22 2011 — edited Dec 22 2011. Plz reply. Thank you! i have a problem in decode clause i have 2 conditions in my code Zero-length string is treated as null, and you cannot compare nulls through (in)equality in Oracle, as they are treated in special way. If expr is null, then Oracle CEP returns the result of the first search that is also null. Thanks for the question, Kaushal. If no matches are found, the default value is returned. The syntax is: DECODE ( expression, search, result [, search, result] AND (NVL (t. Sravprem May 5 2011 — edited May 5 2011. Create Procedure( aSRCHLOGI 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) After getting suggestion that using WITH clause, My approach to retrieve data through DECODE() using alternative table name is: declare cl number; cursor c is with V as ( select c1. deptno has values 10,20,30,40. But i'm unsure what value does the 'exists' condition evaluates to, so that i can put that in the 'search' clause to return a hard coded value. DECODE returns NULL in where clause. roleid = roledef. Actually oracle has generated a smart logic kind of plan with concatenation: I would like to use 'Decode' function with 'exists' condition. The more context switching the less performant application would be. 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 For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. If the first result is NULL, then the return value is converted to VARCHAR2. I think what you wanted was this: Following oracle query complies and works fine: SELECT Employee. Hi, The requirement is like this: In a DECODE expression, Oracle CEP considers two nulls to be equivalent. When you do : if var1 = 'a' then var2 := 'x'; elseif var1 = 'b' CASE might help you out: SELECT t. It's a bit involved as it's made for indexing large documents and text using a lot of smarts. In a DECODE function, Oracle considers two nulls to be equivalent. a collection)? Hi Tom, I'd like to use a decode statement that returns multiple values instead of a single value. SQL query with decoding and comparison in where clause. but the same condition used in simple query is working well for the multiple In Oracle string literals need to be surrounded in single quotes. Hot Network Questions Problem with lua's load function A guess about sudoku-like game, proof or a counterexample Do 「気がする」 and 「感じがする」 mean the same I need to write a sql statement like this: SELECT id_segmento AS Segmento, Decode (id_segmento , '1' , 'a', 'b' ) FROM mapchile. If yes can u give small sample Sur I'm not sure if decode can be used in a where clause. NVL. Jeffrey Kemp. AND Nvl(MF_TRN_AMT, 0) = Decode(:b5, 'P', To_number(:b9), Nvl(mf_trn_amt, 0)) But if :b5 is P, then they're different! There are a couple of ways you could approach this. Asked: August 17, 2016 - 11:51 am UTC. 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. secondary_inventory_name, 'Y'), :p_sub_inv_name ) ) ) This CONDITION in query is giving only the data of single parameter value from the list of p_sub_inv_name parameter values. 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 For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. If expr is null, then Oracle returns the result of the first search that is also null. For example: SELECT , (SELECT DECODE((SELECT 23 FROM DUAL), 0, null, I want to use if statement within where clause. Basically Case is better readable, more flexible and more standard 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. However, that would also be necessary with decode(). Is it the right behavior and is it How to use Oracle's decode function in where clause. ? 1. 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 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 How to use Oracle's decode function in where clause. ORDER_SCH_ID, 'TRAN2', TAB1. However, in this case i cannot equate the value of r For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. If no match is found, then Oracle returns default. DISCOUNT_AMOUNT, o. The alias effectively renames the select list item for the duration of the query. How do I merge the multiple If Else using decode in PL/SQL? 0. Hi, I'm working with Oracle9i Enterprise Edition Release 9. enterprise in decode(v_in_enterprise, 'ALL', v. the when clause can be any sql you like -- decode, instr, substr, like, in Your confusion is understandable; but no, the values returned by the DECODE are not interpreted as column numbers. DECODE replaces any specified value by desired value and can be chained. SELECT supplier_name, DECODE(supplier_id, 10000, 'IBM', 10001, 'Microsoft', 10002, 'Hewlett Packard', 'Gateway') result FROM suppliers; 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. 1. I know that is with NVL, but sql statement inside decode clause. I have 3 big selects to raport and I just want to use parameter for some part of code which depends from choice. Sql to pick n rows from each value of where clause. empid =t. But When I'm exeucting the following query as a seperate query, then I'm getting the value of DECODE block properly, but didn;t understnad why its not returning the same way when I'm putting the same DECODE statement in WHERE clause. Hi all Question 1:- What is Decode in Oracle? Decode is a function in Oracle which helps to transfer your data to the another data. Your continued use of Oracle Communities This has no else clause, so returns null for values of exam_id other than 1, 2, 3, or 4. SQL case query with multiple statement. ITEM_ID, o. com. first_name, t. rowid rid,c1. I want to use as: when pcustomer_id IS NULL then WHERE c. billing_status_text For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 1k 15 15 How to use Oracle's decode function in where clause. Your continued use of Oracle Communities Explanation: In this query, you list the name and ticket details of the passengers traveling with more than one piece of luggage. How do I merge the multiple If Else using decode in PL/SQL? 1. If a passenger owns more than one piece of luggage, there will be more than one element in the bagInfo array. Understanding how to implement conditional logic directly within SQL queries is a necessary skill for data scientists and data engineers. If yes can u give small sample Sur For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. sreese Mar 27 2012 — edited Mar 27 2012 The DECODE function in Oracle allows you to have IF-THEN-ELSE logic in your SQL statements. decode function in where clause. There isn't any place for an IN clause in a DECODE. I need conditional output for deptno 30 based on the availability of this value in test2 table. An existing code is failing, and I'm very unfamiliar with Oracle and am just trying to get this to work. Or you can slap the case expression directly in 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, Hi Guys, I have to use DECODE function in where clause. Using DECODE in WHERE clause. There are several ways to address the problem. business_unit = (CASE WHEN source_flag = SOURCE_FUNCTION THEN 'production' WHEN source_flag = 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) I'm interesting that how can I use if-then-else statement or any control structure in where clause in Oracle. The case statement is the SQL standard "equivalent" to decode(). EmployeeId, Employee. Using AND condition in decode. I'm brand-new to the Oracle world so this could be a softball. First, I use a CTE which computes the number of records having either Success or In_progress. It’s similar to a CASE statement, but CASE is a statement where DECODE is a function. I need a proc that will accept a comma-delimited string as a parameter that I can use in the "IN Case construct with WHERE clause Hi Tom, I have a question and I don't know if this is possible or if i'm jsut doing something wrong because i get multiple errors like missing right paren, or missing keyword. employeeid = employeerole. Hot Network Questions For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. decode in where clause in oracle sql. SKV_585724 Aug 20 2007 — edited Aug 21 2007. process_id, DECODE(c1. I don't think its possible to use a list with decode in this way. SELECT o. id=emp. 2 I would like to get 'GOOD', otherwise 'BAD'. Thank you! DECODE in WHERE clause. state_cd in (:stateCode)) then 1 else 0) end = 1; Alternatively, remove the For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. secondary_inventory_name, 'Y') IN (DECODE (:p_sub_inv_name, NULL, NVL (t. Now, order by clause use an expression and order rows upon it. 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. But if the query is written without the DECODE with a single column in the where clause, the index used (In either case). You use the EXISTS operator in the WHERE clause to DECODE is a subset of CASE. Thank you! i have a problem in decode clause i have 2 conditions in my code But I disagree about using TechOnTheNet as your primary source of information. If the resulting string is empty, then leave out the where clause entirely. roleid AND rolename IN ( CASE WHEN (1 < 2) THEN ('Owner If you need some kind of performance, you will need Oracle Text (or some external indexer). assembly_line = ass_line then 1 else 0 end end) = 1 DECODE is a subset of CASE. Decode with AND clause oracle. For example you can write this code. It works similar to an IF statement wit I'd like to use a decode statement that returns multiple values instead of a single value. tab2 and decode (code, 'a','approved') in this manner its not accepting? Can Your interpretation is correct. discount_total, s. col3, 10) cl from table2 c1) select c1. Thank you! using case when statement or decode stament in where clause. Don't use decode(). UNION ALL. Most likely the developer has got into the habit of wrapping nullable columns in an nvl expression, probably after being burned in the past by an unexpected null value, and now adds it everywhere without bothering to think it through, or perhaps without having really understood the issue in the first place. sql; oracle-database; oracle11g; Share. col1, V. for example. Using oracle decode. The DECODE function returns a value that is the same datatype as the first result in the list. Modified 6 years, Oracle's Ask Tom says: where decode( col1, col2, 1, 0 ) = 0 -- finds differences or. This post has been answered by Saubhik on May 18 2010. Tom Kyte has an example of this in his discussion on variable IN lists . Repeating 'Pune' in the argument list is the cost of doing the translation you asked for. Many application languages have the equivalent of concat_ws()-- string concatenation with a you could also use decode to get the results you need since it is oracle. Check out this post for AppDev or this post for AI focus group information. Select statement into decode function. tab1 = b. If expression is equal to a search, then the corresponding result is returned by the Oracle Database. Hi I want to create a query using outer join and using case condition: select * The decode works like this: SELECT DECODE('col1', 'x', 'result1','y','result2') resultFinal FROM table1; It possible to accomplish this in sql: SELECT * FROM (SELECT For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. First SQL engine and another PLSQL engine. 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 The decode is complex for me and would love to get some help in converting to Postgres CASE please. 748821 Feb 24 2010 — edited Feb 24 2010. Since time immemorial (almost), SQL has supported case expressions -- which are more flexible than decode() and available in all (real) databases. Oracle DECODE not working. Finally, I will provide How can I have a decode statement that returns multiple values (e. As DECODE handles NULLs appropriately, the following should work: SELECT * FROM table1 t WHERE DECODE(:var, t. Please help. grp_id = ?) Of course, this requires using the parameter twice. col3(+)=V. Doc reference: NULLS in conditions Therefore, this one expectedly doesn't work: I should note that the CASE solution suggest by GMB is standard SQL and works in both Postgres and Oracle (and pretty much any other database), so this is just a shortcut. cl and Hello gurus, Can we use case statements in where clause ?? Any example will be great! And also i would like to know, besides CASE and DECODE statements, Is there any way we can use IF ELSE statemen Original where clause in the Data Definition file is as follows, WHERE Closed_Status = nvl(:p_statcode,Closed_Status) AND overdue_flag = nvl(:p_overdue,overdue_flag) My modified code is as follows, For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. Oracle DECODE vs. Later, we can use this count to figure out whether we need to return a single row with the lowest version, or Interested in getting your voice heard by members of the Developer Marketing team at Oracle? a typical decode in where clause. Oracle SQL Comparing via DECODE. item_total FROM ORDER_ITEMS o CROSS APPLY (SELECT ITEM_PRICE*QUANTITY AS price_total, I think some problem is there in my WHERE clause. A simple case expression is like decode. How to create an Oracle SQL statement in the following case? 0. This tutorial provides a comprehensive guide to using the SQL DECODE() function in Oracle. Here is a snippit of the query below, We were using 2 parameters so he can have either or, or use a wildcard but we want to narrow it These changes document Community specific rules and Oracle’s content moderation practices including use of automated tools, appeals process, and Oracle’s contact details. NVL replaces NULL by specified value. The architect needs to justify what they are saying. hi gems. enterprise, TABLE(f_stringto Decode with AND clause oracle. Convert Oracle Decode to Postgres Case expression. 7. customer_id = pcustomer_id. Sql Query trying use DECODE in DECODE (TAB2. Follow edited Nov 26, 2013 at 6:27. CASE statement in WHERE clause to look for multiple values using IN. SQL Decode - SELECT & WHERE. 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. ORDER_TYPE, 'TRAN1', TAB1. The Oracle/PLSQL DECODE function has the functionality of an IF-THEN-ELSE DECODE function in SQL allows us to add procedural if-then-else logic to the query. DECODE compares the expression to each search value one by one. Hi to all, Could you anybody please give response to my query select ast. I have 3 different Where conditions 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! For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 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 DECODE (item. Hi all, SELECT 'US Website' v_site. So task_id is compared with a search value one by one. gselect * from mytable mwhere col1 = { if col2 > sysdate then col2 else sysdate end if} or if case doesn't work -- as you gave me NO VERSION at all -- decode select * from m where col1 = decode( sign( col2 - sysdate ), 1, col2, sysdate ); workouts and quizzes on Oracle Database Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Using Case or decode in where clause. In working with an SSRS report, I'm passing in a string of states to a view. Jump to The following query appears to be what you want. where decode( col1, col2, 1, 0 ) = 1 -- finds sameness - even if both NULL Safely Comparing NULL Columns as Equal. In test1, there are columns called rec_id and deptno. Oracle SQL function to Hive Function Conversion. Multiple values in decode Oracle SQL. like below select * from tab1,tab2 where a. The alias can be used in the ORDER BY clause, but not other clauses in the query. Oracle decode statement. In test2 table, column rec_id and deptno are also available. If the first result has a datatype of CHAR, then the return value is converted to VARCHAR2. Decode in a where clause with "in" 637272 Jul 10 2009 — edited Jul 10 2009. duration to the DECODE since if the value of R. Here's what I need. Decode helps to perform IF-THEN-ELSE logic in the SQL 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 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. 772002 May 11 2010 — edited May 11 2010. decode function in order by clause. Note that sysdate has a time component. Hot Network Questions The general approach in this case would be to parse the comma-separated list into an Oracle collection and to use that collection in your SQL statement. user1000073 Jul 18 2016 — edited Jul 19 2016. Locked Post. i have to 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: The first thing I see is that the WHERE 1=1 condition is not needed. You are usually better off with the official documentation, and the page for DECODE is a good example of why. Database is oracle 10. The decode expression is similar to the case_expr (see case_expr::=). CLASSIFICATION_TRIP is 'T' then i should use <= else i use >. 0 I'm trying to write a 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. You can do a sub-select and filter on it: SELECT * FROM ( SELECT A. Iniyavan . Hot Network Questions Do accidentals have other meanings, or is their usage in this hymn all wrong? In addition, decode() is specific to Oracle (is it deprecated yet?). 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 Here is an example: CREATE TABLE SalesReps ( SalesRep NUMBER(10) NOT NULL, Name VARCHAR2(15) NOT NULL, Age NUMBER(3), RepOffice NUMBER(10), Title VARCHAR2(15), HireDate DATE NOT NULL, Manager NUMBER(10), Quota NUMBER(10), Sales NUMBER(12,2) NOT NULL, CONSTRAINT SalesrepsPK PRIMARY KEY (Salesrep) );. But Oracle has new functionality that lets you avoid a subquery: select co. The bagInfo array holds the information on all the luggage owned by a passenger. 6. Oracle supports a little syntactic shortcut, in which columns of the result set can be referred to positionally in an ORDER BY clause. account = 545 and (? = 0 or a. 2. Thank you! Using DECODE in WHERE clause. Probably you will require more sophisticated filtering - different operators, explicit data type conversion, bind variables - but this is the general idea. And also if the commission is null I want to get 0. 3 In Oracle PLSQL block , 2 types of engines works. SELECT 'US MyAccount Website' For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. QUANTITY, s. I've looked here and here but have no idea how to make it all work. Question and Answer. g. Instead of the expression above, 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. employid, t. You want to to write code that only Oracle developers recognize and understand; You want to write code that is hard to read; You want to increase the chance of introducing bugs the next time you change the code; You want the optimizer to generate suboptimal execution plans (when used in where-clause). employeeid AND employeerole. How to use NVL/DECODE correcly? 3. It is bespoke Oracle syntax. this is my test case CREATE TABLE tab_test (lev NUMBER, code VARCHAR2(10), val For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 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 How to use Oracle's decode function in where clause. Modified 8 years, 6 months ago. I recommend you to use case expressions instead of DECODE. name, 1, 0) = 1; From the 19c documentation: In a DECODE function, Oracle considers two nulls to be equivalent. If a match is not found, then the default is returned. How to use CASE in the WHERE clause. For those who land here that actually have a need for a case statement in a where clause. How to make two conditions within a DECODE. Technical questions should be asked in the appropriate category. FROM dual. If user select other then "ALL"option from the LOV the following condition should be part of the where clause. Don't use decode(). cl from table1 d,V,table2 c1 where V. price_total, s. . inv_type,'OT', (DECODE (item. I tried but can't succeed. The Oracle DECODE() function allows you to add the procedural if-then-else logic to the query. However, in this case i cannot equate the value of r. Whenever you write a SQL statement in a PLSQL block, the switching of engine takes place and this phenomena is called Context Switching. An existing code is failing, and For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. col2, 'BANDM', c1. From the documentation (emphasis added):. (in Oracle, they would pass the decode() test either) use standard joins (with the on keyword), rather than old-school implicit joins (with commas in the from clause) Share. Last updated: August 17, 2016 - 2:14 pm UTC. You can write the where clause as: where (case when (:stateCode = '') then (1) when (:stateCode != '') and (vw. Thank you! I've a prblem with the DECODE in ORDER BY clause Could you please advise if I did something wrong with my sort order. e. Thank you! You can not use alias names from the select list in the where clause, only in the order by clause. ITEM_PRICE, o. Thank you! Can i use Decode in Where clause Please Do the need full on the same. Decode function failure in hive 1. Hi, I have a query that goes like this but is not working: 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. How to write a If condition inside a Where clause in ef core. Select decode(a, 1, x,null), decode(b, 2, x,null), decode(c, 3, x,null) from y Share. answered Decode works on Oracle, but you can't find this function on remaining leading DBMS systems - PostgreSQL, SQL-Server, MySql, SQLite etc. SQL in Oracle: Decode function not working in this scenario. To find a sub-string match you can either use LIKE: oracle where clause with case when. is there any way to do this? sql; oracle; decode; Share. rec_id deptno decoded value condition 1 10 a NA 2 20 b NA 3 30 c or discard What is DECODE function in SQL? In Oracle, DECODE function allows us to add procedural if-then-else logic to the query. " That behavior is not mentioned in the TechOnTheNet I'm trying to use max function in where clause in order to fetch the latest revision of change order. Comments. conditional where in linq query. DECODE can check equality operators only where as CASE can support all relational This second example using a numeric data type for the variable in the decode works properly. Hot Network Questions Cookie cutter argument for nonphysicalism Alternately, you can have the decode return the correct data type by doing an explicit cast. Starting from Oracle 12c you could use CROSS APPLY to define expression and then you could refer to them in WHERE clause:. The statement where I will be using this is something like:select * from v_viewname v where v. Hot Network Questions Proof change of variables for multivariate PDF How do we write the above query in decode() in oracle? Used locations table given in oracle 11g. So for example this: SELECT a, b FROM some_table ORDER BY 1,2 is the same as: For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. But I couldn't succeed. Hi All, All are welcome. If some one can help, this is bit weird problem. So in table I have fields order_no, line_no, chg_order_no (revision number) and amount. How to merge two decode statements within one. DECODE has some strange behavior: "In a DECODE function, Oracle considers two nulls to be equivalent. It will calculate the number of months between two dates, as a decimal number. Rajesh123 Oct 14 2016 — edited Oct 14 2016. First the relevant rows are computed (the where clause), then the selected fields are computed (the SELECT clause) and last the rows are sorted (the order by clause). 7. 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 decode is the function Oracle originally provided with releases of the database prior to 8. identifier , A. last_name, t. 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. where (case when ass_line = '551F' then case when asl. For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. I came into an issue trying to use the DECODE function in a simple where clause. The next is that DECODE('NOINR','NOINR', (SELECT CURRENCY_CODE FROM FND_CURRENCIES WHERE CURRENCY_CODE <> 'INR', ACR. It is quite likely that you really want: oracle outer join with condition in where clause. name , TO_NUMBER(DECODE( A. Technical questions should be asked in the appropriate category. Improve this answer. It really is very old-fashioned. How to use Oracle's decode function in where clause. You can use case or just put the right logic as in: where a. select months_between(sysdate+30, sysdate ) from dual; select months_between(sysdate+15, sysdate ) from dual; Oracle: DECODE and WHERE Clause. status = (CASE WHEN status_flag = STATUS_ACTIVE THEN 'A' WHEN status_flag = STATUS_INACTIVE THEN 'T' ELSE null END) AND t. 6. 2. mgr_id) An workaround query may be: DECODE is a subset of CASE. 60. 741685 Dec 17 2009 — edited Dec 18 2009. Maybe you were better off sql statement inside decode clause. arms777 Mar 7 2012 — edited Mar 8 2012. If you object to any changes, you may request that your account be closed by contacting oracle-forums-moderators_us@oracle. Hot Network Questions Oracle: DECODE and WHERE Clause. CASE vs DECODE. Toggle Dismiss. Description, Employee. req_status If user select "ALL" from the lov no need to append the above condition in the where clause. Sql Query trying use DECODE in Where ORACLE. DECODE (expression, search, result [, search, result] [, default]) Question 3: - Example of Decode Function in 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. You can use a column alias, c_alias, to label the immediately preceding expression in the select list so that the column is displayed with a new heading. 0. Thank you! Check out this post for AppDev or this post for AI focus group information. I have one requirement is need to fetch data from one table using Where Returns. CURRENCY_CODE); is likely to return multiple rows (a value that is being selected is from a subquery). attribute10)), 'FG', (xfer. Hot Network Questions Is it appropriate to reach out to executives and/or engineers at a company to express interest in a position? This is not possible directly, because chronologically, WHERE happens before SELECT, which always is the last step in the execution chain. Starting with 816, CASE is the standard way to achieve the same results - with more meaning (case is easier to read and understand) and is the recommended function to use. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns Decode with AND clause oracle. Hi All, Oracle's decode is basically a switch statement: Place if statement inside a where clause in Linq for Entity framework. Share Improve this answer For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. Learning the various ways to use DECODE, its syntax with examples. ORDER_SR_NO) I have indexes on all columns as in the where clause, but still find that indexes are not being used. The aggregation will always return one row. This also has one selector followed by a list of key-value pairs. release_quantity1 * xfer. account_num,sup. Oracle : Decode for more than one key field. 2 I just googled "Oracle case vs decode" and found a lot of links. The statement where I will be using this is something like: select * from v_viewname v This Oracle tutorial explains how to use the Oracle/PLSQL DECODE function with syntax and examples. assembly_line in ('551F', '551C', '551S') then 1 else 0 end else case when asl. If expr is equal to a search, then Oracle Database returns the corresponding result. It allows you to provide a value, and then evaluate other values against it and show different results. Decode in Where clause. basr vhn uvxv suwfw vpmxwk qgliv awu egflmu fxo gwnuu