Oracle case in where clause. Otherwise, Oracle returns null.

Oracle case in where clause. Follow edited Dec 14, 2020 at 11:23. COL1 FROM A1, B1 WHERE A1. Thanks – ronan The Oracle LOWER() function converts all letters in a string to lowercase. 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 Feb 9, 2024 · Oracle - Case in where clause. The CASE expression matches the condition and returns the value of the first THEN clause. “CASE” statement within “WHERE” clause in SQL Server 2008; Nested case statements vs multiple criteria case statements; Case statement in WHERE clause in SQL Server Oct 10, 2008 · hello all, Is that possible a case in a where clause? i'm using oracle10g and toad v9. The WHERE clause specifies a search condition for rows returned by the SELECT statement. Oracle date comparison in where clause. Then in the WHERE clause, I want to evaluate that input and if Y, have the WHERE clause run as: WHERE end_date is null but if the input is N, then run the query with the WHERE clause as: Apr 28, 2019 · I'm trying to create a CASE STATEMENT in SQL (Oracle) where I need to select only single rows in addition to other criteria. Another way to use the Case Statement is within the WHERE clause. As your answer (correctly) points out, OP doesn't need a CASE expression in the WHERE clause. SQL case in where condition not working. The Oracle documentation is here. COMPARE_TYPE <> 'A' AND T1. Feb 20, 2013 · Since COL1 IN (COL1) is the same as true, you can rewrite your query like this:. In that blog, we employed the Case Statement as most DBAs and developers do, in the SELECT clause. TUESDAY_YN = 1 then insert next 3 tuesdays, etc. So then you might think you could do: Oct 18, 2009 · SELECT col1 as a, CASE WHEN a = 'test' THEN 'yes' END as value FROM table; I am trying to alias the column because actually my CASE statement would be generated programmatically, and I want the column that the case statement uses to be specified in the SQL instead of having to pass another parameter to the program. Note: same CASE statement is used in PL/SQL blocks. 0). Create Procedure( aSRCHLOGIC IN Varchar, aPARTSTRP IN VarChar ) Declare sLogic VARCHAR(100) := aSRCHLOGIC; sPartStrp VARCHAR(100); BEGIN SELECT * FROM parts p WHERE ( Case sLogic WHEN (sLogic = 'begins') THEN (p. Rate)AS MaximumRate FROM HumanResources. NEXT_DATE = V_NEXT_BUSINESS_DATE OR F. [That typical approach is to supply the list as a string or xml, convert that into a data-set using a function, and then join on to that data-set. Jun 23, 2020 · A short time ago we were introduced the incredibly useful and versatile Case Statement. SELECT product_name, list_price, CASE category_id WHEN 1 THEN ROUND (list_price * 0. 0. SE May 17, 2023 · You can use a CASE expression in almost any part of a SQL statement, including the WHERE and JOIN. The CASE statement can be used in Oracle/PLSQL. I have written the following query and in this condition i can't use in clasue. rating = p_rating or b. e. There is a major, major difference between using a CASE expression and boolean expressions in the WHERE clause. SELECT count(*) FROM userTable WHERE ( CASE WHEN mac IS NULL THEN mac IS NULL ELSE mac = '000fe95erd32' END ) your clause is not well good. Or you can slap the case expression directly in the where clause, like so: Try writing the where clause this way: WHERE (T2. 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 May 22, 2021 · Yes. So something like: case when then when then end = I gather what you want is logic along the lines of: - If ass_line = '551F', then match any values for assembly line in ('551F','551C','551S') For example, you can use the CASE expression in statements such as SELECT, UPDATE, or DELETE, and in clauses like SELECT, WHERE, HAVING, and ORDDER BY. LOWER(string) Code language: SQL (Structured Query Language) (sql) Jun 7, 2016 · Rather than putting the data in a case statement where you might have to repeat that case statement in more than one query, you could create a table with static data, then joint to that table. Jun 16, 2014 · Oracle case inside where clause. Case will not conditionally chose the evaluated code. For example, if the grade is A+ and student_id is 1001 , or if the grade is A and student_id is 2009 , it returns 1 (included), otherwise, it returns 0 (excluded). COLUMN4 = D. COL1 END FROM A1,B1,C1; That is if A1. col1 matches B1. for example. However, my CASE expression needs to check if a field IS NULL. Aug 30, 2021 · I am trying to write a "case" statement inside a "where clause" which has an "in" statement in the "then" part. Am getting exception like this please help to find the wrong thing. Case your column and your string identically. 1, 2) -- Video Card ELSE ROUND (list_price * 0. LIBRARYTRANSID THEN 1 WHEN LBT. with tmp as ( select 'Oracle' as field_name , 1 as data from dual union all select 'Oracle' as field_name , null as data from dual union all select NULL as field_name , null as data from dual union all select 'Test' as field_name , null as data from dual ) Select * from tmp Where 1 = case when field_name = 'Oracle' and data is null then 0 else 1 end Oct 16, 2008 · The problem with this is that when the SQL engine goes to evaluate the expression, it checks the FROM portion to pull the proper tables, and then the WHERE portion to provide some base criteria, so it cannot properly evaluate a dynamic condition on which column to check against. 7 WHEN 'F' THEN 0 ELSE Dec 4, 2013 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. The WHERE clause acts as a filter on the rows of the result set produced by the FROM clause. IssuedTo='SN' AND LBT. 7k 11 11 gold badges 35 35 silver badges 61 61 bronze badges. Learn more Explore Teams Jan 21, 2017 · In this case (if it's really DATE data type) the where condition should be. These work like regular simple CASE expressions - you have a single selector. g. Aug 13, 2021 · In a simple oracle case statement, Oracle search starts with the first WHEN . The advantage would be that you can change the data in the table easier than changing all of the queries that have that case statement. Aug 7, 2022 · THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. COLUMN1 = D. Oracle CASE expression has two formats: the simple CASE expression and the searched CASE expression. And obviously you can't escape from the fact that case expressions are really just a concealed way of writing nested IF/THEN/ELSEs which inevitably has, in a certain sense, "more procedurality" to it than some other language constructs. CASE WHEN <condition> THEN <return expression> your query is malformed. – jarlh. One of the most common tasks that database users need to perform is querying data based on a date. Feb 12, 2014 · You can apply the logic you are attempting, but it is done without the CASE. Viewed 14k times 0 I know i could probably accomplish May 5, 2012 · In my WHERE Clause IS the AND F. Value Match (Simple) CASE Expression; Searched CASE Expression; Value Match (Simple) CASE Statement; Searched CASE Statement; Related articles. I'm trying to do it this way: SELECT A. CASE expressions require that they be evaluated in the order that they are defined. May 5, 2015 · If you want to use case, then you need to return a value and do a comparison: (CASE order_date > sysdate and fee_rate_type in ('REGULAR', 'BONUS') then 1 order_date <= sysdate and FEE_RATE_TYPE in ('REGULAR') then 1 END) = 1 However, I would encourage you not to use case in a where clause. The examples below will show how this is done. In you first version you have. COL1 ELSE SELECT A1. If none of the WHEN . IN statement from CASE result inside Where clause Oracle. Dynamic Column on SQL doesn't work (APEX,Interactive Report) Hot Network Questions Aug 17, 2010 · Hi All, I'm on oracle 10gr2. Dec 30, 2008 · This works because this is a multi-value comparison IN list. The following illustrates the syntax of the WHERE clause: Aug 1, 2017 · I have a WHERE clause that I want to use a CASE expression in. com. Oct 17, 2012 · But i would like to use the decode on the whare clause. Technical questions should be asked in the appropriate category. 3 WHEN 'B' THEN 3 WHEN 'B-' THEN 2. Aug 17, 2010 · Hi All, I'm on oracle 10gr2. Jul 19, 2011 · I need to modify the WHERE clause criteria based on a value input by the user. Date = ScoresTable. If none of the conditions are true, it returns the value of the ELSE clause. plsql conditional where clause. 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 Jun 24, 2014 · You'd generally want to use simple boolean logic rather than putting a case statement in a where clause. You can express this as simple conditions. ] @Aleksej: OP should select the answer that best suited his needs. e OTH). where (l_batch_type = 1 and t. id = b. Second problem is that you are trying output a boolean value from your CASE. Database Used: Oracle 11g The present query looks like: SELECT name FROM merchant m WHERE NOT EXISTS ( SELECT 1 FROM settlement s WHE Nov 20, 2015 · i'm using the following query to create a view in oracle 11g (11. Barbaros Özhan. Otherwise, Oracle returns null. 7 WHEN 'D+' THEN 1. (It is a "nested" query - this is very non-technical term though) The inner query takes values from the outer-query (WHERE st. batch_type in ('C', 'D')) or (l_batch_type = 3 and t. SELECT WORK_ORDER_NUMBER, SUM(CASE WHEN STOCK_CODE LIKE 'xxxx' THEN STOCK_QUANTITY ELSE 0 END) AS TOTAL FROM Table GROUP BY WORK_ORDER_NUMBER; Jul 6, 2015 · I have a codition in which i need to use multiple parameters in where clause using Conditional operator. NAME Like 'IgNoReCaSe' If I would like, that the query would return either &quot;IGNORECASE Mar 14, 2013 · The CASE statement evaluates multiple conditions to produce a single value. How can I do it? Jun 23, 2009 · As I had written in title, I have SQL query, run on Oracle DB, lets say: SELECT * FROM TABLE WHERE TABLE. And I'm assuming that you don't really want to join A to B and then generate a Cartesian product with C. op = 2 and case when (:stat = -11) then (sale. Because of this, the optimizer will just use a table Apr 25, 2009 · In this below query i want to check more than one values in CASEwat to do? SELECT column1, column2 FROM table1 WHERE columnX IN <case starts here>(CASE ( valuex = TRUE ) THEN (SELECT columnA FROM tableA where columnB = 'value') //here i want to chk 2 values like " ( 250,3 )" ELSE (SELECT columnA FROM tableA) END)<case ends here> Sep 9, 2011 · I have a standard search clause whereby I'm selecting records on certain filters such as description and status, the status values being 101 to 110. In the case, I will check if the Operator is equal, greater than or less than. customer_id IS NULL; and when pcustomer_id IS NOT NULL then c. Oracle 9i extended its support to PL/SQL to allow CASE to be used as an expression or statement. If you just need to choose among several values to assign to a variable, you can code an assignment statement using a CASE expression instead. where sale. Actually I am passing a value in a procedure according to the value i have to select fields in where clause. The query has case construction in where clause. 2. Oct 13, 2010 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. In your case, I think the clearest code is if you just rewrite it a bit: Apr 1, 2021 · Most applications store a wide variety of text such as names, addresses, and descriptions. Jan 22, 2014 · I am trying to execute a query in Oracle database. Does anybody have any idea what the correct syntax should be like? Sep 22, 2015 · If that's the case, then it seems logical that they would have the ability to reformat the In clauses before they get put into the Case expression. if :P21_TYPEID value is 1 then in where clause it should be PARENTID_1 in (10,11) otherwise PARENTID_1 = :P21_TYPEID. WHERE Clause in See you below SELECT * FROM tabela WHERE coluna IN (CASE WHEN 1 = : Oracle - Clause where in case when. Here my code DECLARE CURSOR cur_contact_without_media (pP Apr 17, 2016 · Example (from here):. Employee AS e JOIN HumanResources. insert_date Dec 20, 2019 · It's generally better to use AND/OR constructions instead of case expressions in the WHERE clause. Oct 25, 2017 · I'm trying to avoid dynamic sql. SELECT * FROM mytable WHERE CASE WHEN desc1 = 'desc1' THEN status_code IN (240,242) WHEN desc1 = 'desc2' THEN status_code IN (240,245) END ORDER BY desc1 OUTPUT Dec 4, 2013 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 3 WHEN 'D' THEN 1 WHEN 'D-' THEN 0. 0. 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 May 15, 2009 · is possibile create a CASE in where clause, something as, So, i can write a single query, CASE (in where-clause) WHEN (KPMERCE IS NULL AND KSMERCE IS NULL) WHEN (KPMERCE IS NOT NULL AND KSMERCE IS NULL AND K_PMERCE = KPMERCE) WHEN (KPMERCE IS NOT NULL AND KSMERCE IS NOT NULL AND K_PMERCE = KPMERCE AND K_SMERCE = KSMERCE). NEXT_DATE IS NULL; can be written in another way I mean since It is using both AND and OR Operators on the same column . The syntax of the Oracle IN operator that determines whether an expression matches a list of values is as Aug 20, 2019 · The option type = '1' is common in both cases so you can leave it out of the CASE statement (also because it would be syntactically wrong to try to return 2 values from the CASE statement): where type = '1' and status = case when carName = :P_PARAMETER then 'N' else 'Y' end Dec 18, 2013 · I need to use a case type of logic in my query. Mar 24, 2011 · the SQL statement is not written correct. COLUMN2) AND (D. end; In where clause i want Jul 22, 2021 · As well as if it is possible to nest a CASE-statement into the WHERE clause? Here is the logic of m SQL statements: I have seen some related topics, but they were not helpful. My answer runs far afield of that, and gives an explanation as to why Oracle is balking at OP query (finding a condition where it expects a value and a value where it expects a condition. One of the multiple ways of writing this would be: Jun 19, 2010 · I assume you want to know the performance difference between the following: WHERE foo IN ('a', 'b', 'c') WHERE foo = 'a' OR foo = 'b' OR foo = 'c' Nov 16, 2015 · You can do the same thing using Oracle's syntax as well but it gets a bit hinkey. 7 WHEN 'C+' THEN 2. COL1 THEN SELECT A1. MONDAY_YN = 1 then insert the next 3 mondays, if r. COL1, C1. I knew that we can use case in a select statement. 31. Status may be null, if so I return records of any Sep 24, 2015 · The ordered_predicates hint is specified in the Oracle WHERE clause of a query and is used to specify the order in which Boolean predicates should be evaluated. Dec 26, 2023 · Oracle Query with Date in Where Clause. Jun 16, 2011 · If each case only allows one column, then you probably need two cases: select col1,col2, case when col3='E01089001' then (select 1 from dual) else (select 2 from dual) end, case when col3='E01089001' then (select 3 from dual) else (select 4 from dual) end from Table1 where col1='A0529'; A REGEXP_LIKE will do a case-insensitive regexp search. Aug 6, 2013 · I have to write a query which have dynamic where clause. You can either put your query in a subselect: SELECT gpaScore FROM (SELECT ( CASE grade WHEN 'A+' THEN 4 WHEN 'A' THEN 4 WHEN 'A-' THEN 3. SOME_TYPE LIKE 'NOTHING%') OR (T2. Dec 2, 2020 · In the case of using Dynamic SQL there are times when a CASE Statement MUST be used due to the fact that there could be data that is being compared against in the WHERE clause that is NOT a column. type_id = 27 or sale. 00) ORDER BY Aug 20, 2008 · I had played around with using the CASE statement in the where clause to sql more dynamic but had also run into the same problem with needing multiple values returned for the in. Both formats support an optional ELSE clause. To match these requirements I tried to make use of the SELECT CASE WHEN clause in the SQL statement as follows: Aug 1, 2011 · Here's my queries, they don't work but I want to do something like this : SELECT a_field FROM a_table WHERE AND CASE WHEN a_value_from_another_query IS NULL THEN a_second_field IS NULL ELSE The WHERE Conditional clause in the Oracle database is an optional clause used in SQL statements. , CPU 5%, video card 10%, and other product categories 8%. Ask Question Asked 10 years, 7 months ago. Instead, you need to create logical groupings of OR/AND to combine the BETWEEN with the other matching condition from your case. 1. So, in the first usage, I check the value of status_flag, returning 'A', 'T' or null depending on what it's value is, and compare that to t. SELECT * FROM a, b WHERE a. CASE s. SOME_TYPE NOT LIKE 'NOTHING%') Share Apr 24, 2007 · I want to use the CASE construct after a WHERE clause to build an expression. asked Once a WHEN clause is matched and its statements are executed, the CASE statement ends. I have a table, users, in an Oracle 9. COLUMN4 Mar 15, 2021 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. The Oracle IN operator determines whether a value matches any values in a list or a subquery. The following query uses the CASE expression to calculate the discount for each product category i. Ask Question Asked 11 years, 2 months ago. case when Jan 29, 2014 · According to Oracle's documentation linked to in the answer, "To write a query that performs an outer join of tables A and B and returns all rows from A (a left outer join), use the LEFT [OUTER] JOIN syntax in the FROM clause, or apply the outer join operator (+) to all columns of B in the join condition in the WHERE clause. However, this isn't an absolute rule. THEN pair meet this condition, and an ELSE clause exists, then Oracle returns {else expression}. If the @UserRole variable value = 'Analyst', then the SupervisorApprovedBy column value must be NULL. Some databases do, but not Oracle. May 2, 2018 · There are valid uses of a CASE in a WHERE clause, especially to force Oracle to run one predicate before another (eg check a string only contains digits before doing a TO_NUMBER on it ) – Gary Myers May 25, 2009 · I need help in a query using case statements in where clause. Modified 10 years, 6 months ago. Rate ELSE NULL END) > 42. I tried to put it in case statement but it didn't work. Surely you can add some constraints on obj_C and obj_D so that null is not allowed? This would simplify things. Jul 11, 2013 · This is a simple question, I've read some details about using CASE in WHERE clause, but couldn't able to make a clear idea how to use it. 7 WHEN 'B+' THEN 3. Basically, the following code is what I want, but it's not the Oracle correct syntax. type_id = 29) else (sale. If you aren't familiar with APEX, it uses low-code to produce a front-end page that is data driven; this case uses a dropdown to select from a list, and I'm comparing that list selection to values pulled from my database. USE AdventureWorks2008R2; GO SELECT JobTitle, MAX(ph1. 3. eg Oct 29, 2013 · How to convert string field and use for Where clause. You can write the where clause as: where (case when (:stateCode = '') then (1) when (:stateCode != '') and (vw. Jun 2, 2023 · Yes, you can use an SQL CASE in a WHERE clause. The CASE expression was first added to SQL in Oracle 8i. BusinessEntityID GROUP BY JobTitle HAVING (MAX(CASE WHEN Gender = 'M' THEN ph1. You would need to use an inner query, something like: select "Id", case "Id" when 3 then 'foo' else 'bar' end AS "Results" from ( select TABLEA. depending on one of the input parameter. select * from cardimport where STATUS = CASE WHEN STATUS = '' THEN 'F' ELSE STATUS END Introduction to Oracle IN operator. ColumnName != '' is equivalent to e. GRP_ID = CASE ? WHEN 0 THEN A. Adrian's article is quite helpful. 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 This is a correlated sub-query. SELECT table_name, CASE owner WHEN 'SYS' THEN 'The owner is SYS' WHEN 'SYSTEM' THEN 'The owner is SYSTEM' ELSE 'The owner is another value' END FROM all_tables; Mar 22, 2011 · There are 3 main ways to perform a case-insensitive search in Oracle without using full-text indexes. SELECT * FROM TABLE1 WHERE P1 IS NULL OR COL1 IN (SELECT ID FROM TABLE2); In general, the CASE/WHEN/END clause can be used only in the "projection" part of a SELECT; you need to use the "regular" boolean expressions In the WHERE clause. Replace your row_number clause with rank() over (partition by col1 order by case when col2 = 'A' then 1 else 2 end) as rn in order to solve it. The following shows the syntax of the Oracle LOWER() function:. BusinessEntityID = ph1. LIBRARYTRANSID=LIB. Sep 1, 2017 · I wrote this oracle procedure to return a rows of data. dimension) end as total_dimension, d. In addition: Don't use commas in the from clause. ex: select * from table WHERE 1 = CASE WHEN channel = 1 AND REGEXP_LIKE Jul 11, 2016 · Oracle SQL CASE expression in WHERE clause only when conditions are met. Jul 26, 2020 · Oracle case inside where clause. 13. rating > p_rating or b. 00 OR MAX(CASE WHEN Gender = 'F' THEN ph1. partnum LIKE sPartStrp||'%') Oct 20, 2016 · You need do to the comparison outside the whole case statement. Syntax. x. Like procedure samp (pId number, pValue varchar, details out T_cursor) is begin Open details for Select id, No,Name from tbl1 where. Jan 25, 2018 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. As an additional input, although it does not relate to this thread, you can also aggregate your case statements without mentioning it in the group by clause. I have the following where clause,,whenre I need to use case for one of the filtering condition in the where clause. if seems like you just want to format the date Your not actually comparing the end date to anything which is where you're missing something (it is expecting there result of your case statement to be compared to something) Oct 9, 2013 · select * from Tran_LibraryBooksTrans LBT left join Tran_LibraryIssuedBooks LIB ON case WHEN LBT. LIBRARYTRANSID THEN 1 ELSE 0 END`enter code here`select * from Tran_LibraryBooksTrans LBT left join Tran Apr 2, 2020 · 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. Oracle Database 23c extended CASE expressions in PL/SQL to support dangling predicates in simple CASE expression. field value but a hardcoded value that is compared to perhaps a user selection or status (as examples) it might be a static value passed in via May 17, 2016 · This is because a DATE column in Oracle also contains a time part. id_file) as attachments_count, case when sum (f. You can change either the session or the database to use linguistic or case insensitive searching. Then filter it in the outer query. – Jeffrey Kemp Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. Moreover, your query would have never returned rows with department - "Accounts or Unknown" because of the filter Department="SALES" Try below instead, that will be easy to be fetched by Engine : Aug 7, 2018 · CASE <expression> WHEN <comparison expression> THEN <return expression> … or. id(+) AND b. May 26, 2016 · Couldnt try it on oracle. I need to check a value from a parameter, and depending on it, apply the right clause. * ,D. batch_type in ('A', 'B')) or (l_batch_type = 2 and t. As you're checking whether the result of the case statement is the same as the ELSE clause then the statement is the same as the opposite of all other conditions. When rows are inserted into this table, the first name and last name fields are supposed to be in all upper case, but somehow some values in these two fields are mixed case. Oracle SQL Case Statement in Where Clause. Sep 30, 2016 · I'm interesting that how can I use if-then-else statement or any control structure in where clause in Oracle. I want to use as: when pcustomer_id IS NULL then WHERE c. PL/SQL Using CASE in WHERE clause. Case expression in where clause PL/SQL. 64. COLUMN3 = 1) AND (DISTINCT A. This example would return all suppliers that reside in the state of Florida and whose supplier_name is IBM as well as all suppliers whose supplier_id is greater than 5000. Jul 2, 2014 · "Declarative" was intended with respect to the physical access to the data (the "pointer chasing" that was so prevalent before the RM). type_id = 28 or sale. SQL SELECT WHERE field contains words. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. Always use proper, explicit join syntax. You could use the CASE statement in a SQL statement as follows: (includes the expression clause). 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 Jun 30, 2016 · Something isn't right in this Your using the case in the where clause but I don't think that's where you want it. 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 Oracle PL SQL CASE in WHERE clause. Oct 20, 2013 · The CASE statement is evaluated in order, so if any "case" is true then every case after it is ignored. dimension) is null then 0 else sum (f. 4. The data in the column will be stored in its specific case, but you can change your session's case-sensitivity for matching. Oct 2, 2018 · (1) you can't use a case statement anywhere in a sql query; (2) you can use a case expression anywhere in a sql query where an expression is allowed, including the select and where clauses. * ,(CASE WHEN (A. Hi ALL, Plseas suggest me Jan 21, 2005 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. COL1=B1. The syntax for the CASE statement in the WHERE clause is shown below. If budgpost is really a character column as is stated, then we have to assume that a non-numeric value might make its way into one of the In clauses. My query has a CASE statement within the WHERE clause that takes a Since web search for Oracle case tops to that link, I add here for case statement, Using Case When Clause in Where Clause. Tried a whole host of methods using STRAGG and in-list functions but kept running into limitations Thanks for showing how I can do dynamic where clauses without using pl/sql. select * from Users where Regexp_Like (User_Name, 'karl|anders|leif','i') This will be executed as a full table scan - just as the LIKE or solution, so the performance will be really bad if the table is not small. THEN pair whether the comparison expression is equal to the expression or column or not and if so, case statement will return {return expression}. Two of the fields are varchar - last_name and first_name. – Mar 11, 2010 · For appeals, questions and feedback about Oracle Forums, Case in where clause. create or replace force view v_documents_list ( id_doc, attachments_count, total_dimension, insert_date, id_state, state, id_institute, institute, hasjob ) as select d. Next Steps Nov 2, 2023 · Oracle EBS-Forms: How to know query behind LOV Nov 21, 2023 I'm working in Oracle's APEX environment, trying to return all values in one case and specific values in another case. LIBRARYTRANSID THEN 1 when LBT. I want to use the CASE construct after a WHERE clause to build an expression. In a simple CASE expression, Oracle Database searches for the first WHEN THEN pair for which expr is equal to comparison_expr and returns return_expr. Feb 21, 2019 · You can use a CASE Statement anywhere a valid expression is used within the SELECT statement such as the WHERE clause’s filter criteria. Select CASE SQL Example. If you want to find all the exam results with A or B grades, you can place the select above in a subquery. You can look to the case as a value, so you have to put an operator between the case and the other operand. COMPARE_TYPE = 'A' AND T1. 05, 2) -- CPU WHEN 2 THEN ROUND (List_price * 0. Ask Question Asked 12 You actually don't need the case here, this or clause will try the friendly name first it it was null it won't Jan 14, 2016 · Oracle tries to filter the number of records to be scanned from table by going for the where clause first before select that is why your query fails. If so, then use b. When searching on these values, often you want any matching letter – case is irrelevant. val(+) = 'test' Note that in both cases, I'm ignoring the c table since you don't specify a join condition. You can also set up indexes to use particular sort orders. For older versions use: SELECT * FROM ( SELECT * FROM t_config_rule WHERE rule = 'IND' OR rule IS NULL ORDER BY rule NULLS LAST ) WHERE ROWNUM = 1; or number the rows with ROW_NUMBER and keep the first row: SELECT * FROM ( SELECT r. I have a column gap_value if the user sends a parameter 'P' then I need to fetch gap_value&gt;0 else if 'N' it should be gap_value&lt;0. Feb 6, 2012 · Oracle CASE in WHERE clause. user580970 Mar 11 2010 — edited Mar 11 2010. Date) thus it is evaluated once for each row in the outer query. I tried to guess your table structure from above comment, let's see this example: SQL> create table employees (emp_id number, admin_user number, project_id number); Table created. Oracle implemented this multi-value comparison IN list with a limit of < 100,000 rather than the 1,000 in the normal IN list. Can I Use DECODE Instead Of CASE? Oracle has a function called DECODE, which lets you check an expression and return Jun 8, 2016 · Good day Stackoverflow! I have a query that is giving me an error: "Missing Right Parenthesis", at least, so says SQL Developer. id_doc, count (f. COLUMN4) THEN 1 ELSE 0 END) AS COLUMN8 FROM TOTAL1 A FULL OUTER JOIN TOTAL2 D ON A. ACCOUNT = 545 AND A. something like select MISC_FLAGS from systemcode where rec_type = 'C' and code_type = 'SAN' and CODE_ID = 'HT'; The problem with the case (as you have written it) is that Oracle does not treat the value from a logical expression as a valid value. Jan 11, 2016 · I am facing difficulty in understanding oracle(12c) sql order by clause with case statement. Oracle is a powerful database management system (DBMS) that can be used to store and manage large amounts of data. 2. There, it may be utilized to alter the data fetched by a query based on a condition. This Oracle WHERE clause example uses the WHERE clause to define multiple conditions, but it combines the AND condition and the OR condition. SQL "case when" query. COURSE_SCHEDULED_ID WHEN IS NULL THEN which will throw "ORA-00936: missing expression" because IS NULL is a condition, not a value or expression. 6 database. COL1=C1. if the flag is Yes then i want all the id where the column name is not null. I wrote a simple CTE that obtains as input either a Y or N from the user. customer_id = pcustomer_id. 5. Use table aliases that are abbreviations for the table names. The below is my sample query: 1 SELECT * FROM dual 2 Jan 17, 2020 · Hello Tom Is it possible to change the where condition (using case statement) based on certain variable? For example var T varchar2(1) exec :T := 'E'; var E number; exec :E := 7788; var N varchar2(20) exec :N := 'MILLER'; select empno, ename from emp where -- how to use case statement to vary the condition based on :T -- if :T = 'E' then the condition should be where empno = :E -- and if :T Feb 26, 2016 · The problem is that Oracle evaluates the SELECT after the WHERE clause. Jan 3, 2014 · Oracle doesn't treat Boolean expressions like other expressions — it handles them as syntax rather than as a type — so CASE expressions can't evaluate to Booleans. If no condition is found to be true, and an ELSE clause exists, then Oracle returns else_expr. If someone says adding a CASE expression to a JOIN clause is a bad practice, ask them to explain why. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks Dec 14, 2020 · oracle; case; where-clause; Share. GRP_ID ELSE ? END And Decode works in a similar fashion, although I think it's less readable. No, Oracle can't use boolean expressions as results from functions. Oracle Database uses short-circuit Summary: in this tutorial, you will learn how to use the Oracle WHERE clause to specify a condition for filtering rows returned by a query. 08, 2) -- other categories END discount FROM products May 16, 2017 · Never forget that in Oracle SQL the '' literal (empty string) is the same as NULL, hence your predicate e. 3 WHEN 'C' THEN 2 WHEN 'C-' THEN 1. Can You Use An SQL CASE within CASE? Yes, you can use a CASE within CASE in SQL. In a searched CASE expression, Oracle searches from left to right until it finds an occurrence of condition that is true, and then returns return_expr. Mar 27, 2012 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. COL1 FROM A1,C1 WHERE A1. state_cd in (:stateCode)) then 1 else 0) end = 1; Alternatively, remove the case entirely: Dec 7, 2023 · How to use CASE in the WHERE clause. 3. For example, the Olympic data set stores athlete names in this format: FAMILY NAME, Given Names To find all the people who have Barry for any of their names, you can upper (or lower) case the column and search string: Sep 10, 2021 · The CASE statement returns a "column value" that cannot be evaluated as a WHERE CONDITION itsef, but you can use it as a value 1 or 3 depending on sysdate, and then use this value in the filter condition: Nov 30, 2021 · I want to write a query - to cover a case :- where I want to check if any misc value present for a code_id (a input vairable) if not then use code_id as default value (i. you can do it differently like this : Jun 26, 2023 · The CASE statement in the WHERE clause can conditionally filter rows based on defined criteria. Date format in where clause-Oracle. IssuedTo='SM' AND LBT. Case Statement on Multiple conditions in Oracle. rating < p_rating, correspondingly in the SQL. Oct 30, 2017 · Here is the query that you can use. Introduction to Oracle WHERE clause. Kindly guide me how can i return multiple parameters from case clause. This is because CASE is designed to return a value, rather than to dynamically construct the SQL inside it. Rate ELSE NULL END) > 40. case statement in where clause with in values oracle sql. Jun 21, 2018 · E. It extracts only those records that fulfill the specified condition. oracle where clause with case when. Sql Fiddle DEMO. Feb 1, 2018 · The FETCH FIRST clause is available only as of Oracle 12c, though. A subquery is a query nested within another query, you will learn about the subquery in the subquery tutorial. Jun 8, 2015 · You can use a case: SELECT (columns list) FROM AGREEMENT A WHERE A. The result of the to_date() function is a date with the time set to 00:00:00 and thus it probably doesn't match any rows in the table. I do the same for the business_unit column with a second CASE statement. The CASE statement is appropriate when there is some different action to be taken for each alternative. COL1, B1. Dec 30, 2016 · The idea is great, but add Z4/C to the data and you'll see the flaw. I have a table with the below data, SELECT DEPT_NO, DEPT_NAME FROM SORTNG_LOGIC; DEPT_NO DEPT_NAME Feb 10, 2017 · Oracle, for example can do WHERE (Field1, Field2) = ('a', 'b') but MySQL can't. Create Procedure( aSRCHLOGI Dec 3, 2014 · You just need to make both comparisons in the same case statement: and dep_dt = case when to_char( SysDate, 'D' ) <> '2' and dep_dt <= SysDate then dep_dt else SysDate end Otherwise, Oracle returns null. In the absence of ordered_predicates, Oracle uses the following steps to evaluate the order of SQL predicates: Aug 4, 2024 · In this query, we use the CHOOSE(CASE-END, 1, 0, 0, 0) function to select the second argument 1 when the CASE statement returns 1. SomeIDNumber AS "Id", from TABLEA ); May 16, 2009 · More detail on Mr Dredel's answer and tuinstoel's comment. Jan 12, 2015 · does anyone know whats wrong with this nested select statement? It complains about missing )'s but i can't understand why it doesn't work (i have left off the other bits of the statement) Select ( Mar 10, 2013 · But, there are no other criteria in the WHERE clause so, with a case-insensitive index on (lastname, firstname), the best you could hope for from the statement you posted is a Full Fast Scan on the index. In almost all databases, it comes down to "the optimizer understands boolean expressions". Using SELECT inside COALESCE. ColumnName != null which always evaluates to NULL. Commented Dec 20, Case on where clause ORACLE. This can be done using the WHERE clause in an Oracle query. batch_type in ('E', 'F')) Depending on each weekday attribute in table ROUTINE a case statement should be used, that checks if r. IssuedTo='BO' AND LBT. select * from student where (cast (nvl(linerevnum,'0') as int)) = 1 liner Mar 13, 2015 · To keep it simple I would go for union clause in this case, so you can have your where clause as complex as you need. Dec 14, 2007 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. 1022. Given the example, the CASE expression performed better in this tutorial than the UNION ALL. – Ishamael Commented Oct 16, 2012 at 23:08 Aug 8, 2016 · The alias can be used in the ORDER BY clause, but not other clauses in the query. To learn more about WHERE, check out our article SQL WHERE – Guide and Examples You should look up the CASE construct. . CASE Expressions And Statements in Oracle. Ultimately what method you choose is dependent on your individual circumstances; the main thing to remember is that to improve performance you must index correctly for case-insensitive searching. With the kind of query you want to do I can't help but think there are some omissions in the database schema. Each WHEN clause may contain a comparison condition and the right-hand side of the formula. EmployeePayHistory AS ph1 ON e. status. Below is query I am trying to make work using a case statement Oct 25, 2016 · Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. type_id = 27) end But I am getting the following error: ORA-00907: missing right parenthesis. rftn yamvv zoiyb xgnabt bplen dngeyu upkg upfoxkp lzpuoi rhyz