Case in select statement oracle. Otherwise, Oracle returns null.

Case in select statement oracle idperson , CASE WHEN T. Hot Network Questions Two columns tables Dec 2, 2004 · For appeals, questions and feedback about Oracle Forums, CASE in SELECT statement. If a condition is true, then corresponding THEN clause is executed and execution jumps to the END CASE (short circuit evaluation) clause. A case expression returns a single value. COL1, C1. Asking for help, clarification, or responding to other answers. selector_value can be an expression of any PL/SQL type except BLOB, BFILE, or a user-defined type. TELEPHONE_NO_DAY ELSE NULL END You also don't need the brackets around the two case statements. job. WHEN selector_value THEN statement. select exam_id, count ( case when percent_correct >= 90 then 1 end ) a, count ( case when percent_correct >= 80 and percent_correct < 90 then 1 end ) b, count ( case when percent_correct >= 70 and percent_correct < 80 then 1 end ) c, count ( case when percent_correct >= 60 and percent_correct < 70 then 1 end ) d Nov 28, 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 Sep 22, 2015 · select column_id, case when column_id in (select column_value from table(f_str_to_nums('1,2,3,4'))) then 'red' else 'blue' end from user_tab_columns where table_name = 'EMP' Share Improve this answer The SQL CASE Expression. 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. A simple CASE statement evaluates a single expression and compares the result with some values. In particular, a multi-row select clause subquery can output each of its rows as an xmlelement that is encapsulated in an xmlforest. Notice the statement is finished with the END CASE keywords rather than just the END keyword. Oracle - dynamic SQL in Select Aug 20, 2008 · On a related note, if the requestor had been passing on value in or returning one value from the case statement couldn't he have used the case statement to either use the variable or use the column name, sort of like using the NVL OR EXPANSION where username = (nvl(:x,username)) but more readable. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). The function is available from Oracle 8i onwards. Aug 25, 2015 · SELECT (CASE WHEN ISNULL(s. create table account( account_id number primary key, account_status varchar2(30)); insert into account values(1, '5'); insert into account values(2, '3'); insert into account values(3, '2'); select * from account update account set account_status= case when account_id=1 then '2' when account_id=2 then '5' when What is the equivalent of the below SQL Query in Oracle? SELECT CAST( CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1 ELSE 0 END AS BIT) I just want an Apr 15, 2014 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand You can use MIN in the column list if you group the query appropriately: select a. The difference is that it uses EXISTS instead of IN. 3 WHEN 'D' THEN 1 WHEN 'D-' THEN 0. If it's the 20th or less (e. Thanks for accepting this as the answer but Tony Andrews solution is a lot more straightforward and, in my view, the better answer. end_date,'yyyymm') END - to_date(b. Select case 'some_column_data' when Mar 1, 2017 · it is oracle. The isAdmin is a Character 'Y' or 'N'. A quick example would be something like: Jan 8, 2013 · The Goal / Background. employees t1 INNER JOIN hr. Statement 1 SELECT employee_id as EmployeeID, first_name as FirstName, last_name as LastName, hire_date as HireDate, t2. COL1=B1. 7 WHEN 'C+' THEN 2. Jul 20, 2015 · Conjunction: Your case doesn't make any sense (and cannot be made in this way). I ahve made the two temp tables, "disc_memberlist" and billing_disc. In this case the salary depend on emp. Hello, in Oracle8 I've the following Depending on each weekday attribute in table ROUTINE a case statement should be used, that checks if r. Jan 14, 2016 · DISTINCT: duplicate rows are removed (if it's a SELECT DISTINCT statement) UNION, EXCEPT, INTERSECT: the action of that operand is taken upon the rows of sub-SELECT statements. object_name)) then 'IS_TABLE' when 1 in (select 1 from dual where not EXISTS (select 1 from user_tables tab where tab. type = 'C' THEN (SELECT name from Customers where C. Technical questions should be asked in the appropriate category. – Oct 19, 2016 · As well as the issues mentioned by @GordonLinoff (that AS is a keyword) and @DCookie (you need entityid in the group-by):. DATA = '0' THEN Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. 2) Keep my CASE statement with your SELECT 1 FROM JOBS J WHERE J. select Invoice_ID, 'Unknown' as Invoice_Status, case when Invoice_Printed is null then '' else 'Y' end as Invoice_Printed, case when Invoice_DeliveryDate is null then '' else 'Y' end as Invoice_Delivered, case when Invoice_DeliveryType <> 'USPS' then '' else 'Y Nov 20, 2015 · Both solutions works well. id, yourtable. Either use a subquery, or better just the entire CASEEND into your where clause. SELECT some_other_field, id, CASE ID WHEN A THEN columnA WHEN B THEN columnB ELSE 'Unknown' END genericvalue FROM customers; Jul 15, 2019 · I have a requirement where in i'm supposed to take 3 dynamic values from the user and compare with the list of values present based on match of it I need to have conditions to be added to where clause using case statement. Like, Case when someiput is null then Begin select something into val from sometable where somecondition = somevalue; Exception when NO_DATA_FOUND then someinput := somevalue; end; end case; I hope it help! Apr 16, 2014 · I need a query to return a certain result for a certain column depending on what value the column that is being run the select statement against has. simple_case_statement. 7 WHEN 'F' THEN 0 ELSE Aug 4, 2020 · I have written a simple case statement as below: case when col_name is null then 'NO' else 'YES' end as col_name But I'm still getting (null) instead of a 'NO' ? Any ideas? I have tried following still no luck: case when isnull(col_name, 0) = 0 then 'NO' else 'YES' end as col_name I have also tried this: Dec 3, 2015 · You can do switch-like statements with CASE expressions in plain SQL. 325462 Dec 2 2004 — edited Dec 2 2004. Oracle case statement basic syntax. Syntax of CASE statement CA Jan 4, 2018 · If table_records is relatively small, why not try a left outer join instead: select case when a2. Provide details and share your research! But avoid …. The above query, now with an alias, looks like this: SELECT name, zoo, CASE zoo WHEN 1 THEN 'Brookfield Zoo' WHEN 2 THEN 'Dublin zoo' ELSE 'unknown' END AS name_zoo FROM animal; And the result: Apr 27, 2004 · Moreover, using the CASE function, multiple conditions provided in separate SQL queries can be combined into one, thus avoiding multiple statements on the same table (example given below). (CASE WHEN (Select 1 from DUAL) = 1 THEN 'TEST' ELSE 'TEST2' END) AS TEST; Now I want to get the result of this case simple_case_statement. You can also write this without the case statement. ColumnName != '' -- Just to select everything in the table ELSE e. SQL> SET HEADING OFF SQL> SELECT * 2 FROM NLS_SESSION_PARAMETERS 3 WHERE PARAMETER IN ('NLS_COMP', 'NLS_SORT'); NLS_SORT BINARY NLS_COMP BINARY SQL> SQL> SELECT CASE WHEN 'abc'='ABC' THEN 1 ELSE 0 END AS GOT_MATCH 2 FROM DUAL; 0 SQL> SQL> ALTER SESSION SET NLS Jul 17, 2014 · What I mean is, I have hard coded the values for the case statement as 'INTERNET', 'SALES' ETC Is it possible to avoid hard . To match these requirements I tried to make use of the SELECT CASE WHEN clause in the SQL statement as follows: Feb 28, 2012 · You can either put another case or use decode (as @madhu suggested): select case when value in (1000) then null when user in ('ABC') then user when area in ('DENVER') then case when value = 2000 then 'Service1' when value = 3000 then 'Service2' end else null end as num_code from service_usoc_ref; May 28, 2020 · If you mean to select from those two tables, then compute the CASE expression, and then apply CAST to it, that's fine (you are using a "scalar subquery" to return a single value to which you apply CAST), but then you are missing SELECT before the keyword CASE. Hello, in Oracle8 I've the following Oct 23, 2014 · Try selecting the columns and using the case to evaluate each row: SELECT COLUMN_A, COLUMN_B , CASE WHEN COLUMN_A <> COLUMN_B THEN 'Not OK' ELSE 'OK' END AS [Status] FROM Table1 Per your comments, you can have multiple cases within a single case statement: * Update - While not elegant, you can handle each necessary case with it's own statement. The simple CASE statement has the following structure: Apr 9, 2018 · Both CASE statements are invalid: for the first, you can't use CASE value WHEN boolean_expression THEN you either need to use CASE value WHEN value THEN or CASE WHEN boolean_expression THEN ; for the second, AS :bind_variable is invalid (and so would 2 = 2 AND CASE END AS alias also be invalid). Your subquery should return only one value (only one row and one column) since you'll display it on a single row. y else c. select h. SELECT * FROM emp WHERE CASE WHEN emp. salary > 2000 THEN e Aug 3, 2017 · I am trying to use the if condition in the select query of the Oracle database. See the following example:. id = a2. projectID = p. Jan 12, 2015 · Select (CASE WHEN REQUESTS. ID) AND (pr. If that's the case, then your update statement won't work, since you can't update a single column to multiple values. Given this test data: SQL> select * from employment_history 2 order by Gc_Staff_Number 3 , start_date 4 / GC_STAFF_NUMBER START_DAT END_DATE C ----- ----- ----- - 1111 16-OCT-09 Y 2222 08-MAR-08 26-MAY-09 N 2222 12-DEC-09 Y 3333 18-MAR-07 08-MAR-08 N 3333 01-JUL-09 21-MAR-09 N 3333 30-JUL-10 Y 6 rows selected. Net Oracle client you'll end up with a DataTable with a column named MYNEWCOLUMNAME in case (1) and MyNewColumnName in case (2). SELECT product_name, list_price, CASE category_id WHEN 1 THEN ROUND (list_price * 0. Aug 7, 2022 · 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. salary > 2000 THEN e Mar 27, 2018 · The query runs okay the number of rows considered, untill the part showed below. From here, I need to simple_case_statement. COLUMN1 = D. if they're not stage 3, stage 2, or even stage 1). Please understand that PL/SQL is not another name for "Oracle SQL". eventnbr in (select eventnbr from event where sysdate between eventbegints and eventendts) then rate else sellprice end) as listprice from sku a INNER JOIN colour b ON b. I tried the following: select *, (case when PRI_VAL = 1 then 'High' when PRI_VAL = 2 then 'Med' when PRI_VAL = 3 then 'Low' end) as PRIORITY from MYTABLE; Oct 25, 2012 · SELECT ProductNumber, Category = CASE ProductLine WHEN 'R' or 'r' THEN 'Road' WHEN 'M' or 'm' THEN 'Mountain' WHEN 'T' or 't' THEN 'Touring' WHEN 'S' or Jun 5, 2020 · I have a view which contains a cast statement for one column. COLUMN4 Aug 8, 2016 · I've been trying to look up for awhile now if it's possible to use an alias stated earlier in the select statement if it can be used in a case later in the case statement for Oracle SQL. This cast statement contains a case statement. Nov 17, 2014 · I am trying to return a boolean value from a case statement but the compiler is complaining about a ORA-00936: missing expression error: SELECT CASE MYCOLUMN WHEN NULL THEN true ELSE So simple you can use case statement here. COLUMN4 = D. ELSIF statements. colourcode = a. In Oracle database 23ai the simple CASE statement and expression are more flexible, allowing dangling predicates and multiple choices in a single WHEN clause. It gets rid of a lot of repetition, too! This really isn't about the performance of the query ( @Gordon has that covered pretty well), but that huge case statement just seems like a maintenance nightmare. MONDAY_YN = 1 then insert the next 3 mondays, if r. Otherwise, you can get printable Boolean values from a SELECT. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks We can use a CASE statement in WHERE clause as: SELECT employee_no, name, department_no FROM emps WHERE (CASE WHEN :p_dept_no = 50 THEN 0 WHEN :p_dept_no = 70 THEN 0 Aug 21, 2015 · SELECT case when x. the column list in SELECT statements). Also: plain SQL only has case expressions, not case statements, and indeed everything in your post is case expressions. Oracle Database uses short-circuit Example. id; Jan 27, 2015 · Generally, you shouldn't use CASE where Boolean logic is allowed (e. May 5, 2015 · The case statement is an expression that returns a single value. rate, 0) = 0 THEN (SELECT TOP 1 pr. I wasn't game to create 30 tables so I just created 3 for the CASE expression. 3 WHEN 'C' THEN 2 WHEN 'C-' THEN 1. selector. THEN . com. But as you can't use like in the first version, you need the second: CASE WHEN CONTACTS. COLUMN4) THEN 1 ELSE 0 END) AS COLUMN8 FROM TOTAL1 A FULL OUTER JOIN TOTAL2 D ON A. Jan 11, 2016 · I am facing difficulty in understanding oracle(12c) sql order by clause with case statement. ID_DOC withount joining the JOBS table. IF-ELSE issue in Select Statement in Oct 7, 2015 · Ok based on the fiddle you have given i have tried these and it worked for me. id = 2 THEN 2 ELSE 1 END Sep 25, 2012 · CASE WHEN <condition> THEN <return expression> These are the 'simple' and 'searched' variants in the docs. 1, 2) -- Video Card ELSE ROUND (list_price * 0. Dec 13, 2013 · In the Oracle RDBMS, it is possible to use a multi-row subquery in the select clause as long as the (sub-)output is encapsulated as a collection. assign_date, (CASE WHEN lp. col1 matches B1. job_title as JobTitle, CASE WHEN hire_date <= '31-DEC-03' THEN 'Old Employee' ELSE 'New Employee' END AS EmployeeStatus FROM hr. select * from MY_DBSOURCE WHERE 1=1 And LP_WHERE_REP = (CASE When :LP = 'LIFESHEILD' AND :M = 'AP' AND :STATUS = 'Processed Jul 30, 2013 · With the . Thanks! – Apr 27, 2010 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. rate FROM ProjectRates pr WHERE (pr. I'm trying to do it this way: SELECT A. Aug 21, 2020 · In Oracle statement CASE has IF-THEN-ELSE functionality. 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 Oracle Case When Like [duplicate] Ask Question Asked 11 years, -- sample of data SQL> with t1(je_source, user_name) as( 2 select 'Revaluation1', 'SCHE123' from Jun 6, 2014 · You cannot reference a alias in the WHERE clause. Oracle CASE expression syntax is similar to an IF-THEN-ELSE statement Mar 31, 2009 · 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'; What does PL/SQL have to do with this? What you have shown is plain SQL. effectiveDate DESC ) ELSE (SELECT TOP 1 sr. One alternative is to use a case expression within the SQL SELECT INTO statement, as David Goldman has shown in his Answer. job = 'DEVELOPER' THEN salary*1. It's not as clean as you'd like as you need to re-write each expression, but it gets the job done: select case when (1+2) > 200 then 'high' when (1+2) < 100 then 'low' else 'medium' end hi_med_low from dual ; Sep 26, 2013 · select case when val=2 then val1 else val end as thevalue from table1 I assume you meant that val and val1 are both from the same table, but when val=2, to use val1 instead. The following example displays the list price as a text comment based on the price range for a product. – Jan 10, 2012 · The max aggregate function will ignore null values, so you don't need the case statement or the group by as you want the max over the entire returned set. Eidted it in the question Adding a UNION to two SELECT statements (using CASE) 0. Expression whose value is evaluated once and used to select one of several alternatives. idperson) END Name from myTable T I have a stored procedure that contains a case statement inside a select statement. Oct 20, 2017 · I'm assuming that you have appropriate indexes on the tables in the subqueries. Simple Oracle SQL query Apr 14, 2023 · CASE Statement and CASE Expression Enhancements in Oracle Database 23ai. COL1, B1. A CASE statement is evaluated from top to bottom. id from table1 as mytable left outer join (SELECT 2 AS tableid, * FROM table2 UNION ALL SELECT 1, * FROM table3) as yourtable ON mytable. If you want to run different select statements depending on a parameter, use a where condition for this and union all such select statements. Mar 25, 2010 · Here's another possibility, although I haven't tried it on Oracle: select mytable. TUESDAY_YN = 1 then insert next 3 tuesdays, etc. select query with if in oracle. 3 WHEN 'B' THEN 3 WHEN 'B-' THEN 2. Taskid,h. I am combing through a workorder system to see if workorders meet certain criteria (e. jobs t2 ON t1. a = 'something' then b. cntrctr_lcns_info where third_party_id = thirdPartyId Oct 20, 2016 · It is not an assignment but a relational operator. job_id = t2. I modified your code a little bit (I'm on 11gXE, it doesn't allow partitions nor identity columns - you can leave both of those if your database supports them). See an example below that would do what you are intending. Jun 29, 2011 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. Jul 5, 2021 · But when it comes to query (in select statement) will using nvl make it slower? I have a package that have loads of select statement with NVl. grade_id = 3 THEN (CASE ((date_completed-date_submitted)*24*60)<=14400 THEN Mar 15, 2021 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. Simple PL/SQL CASE statement. idperson) ELSE (SELECT name from Providers where idprovider = T. Jun 12, 2019 · The oracle says that CASE statements return s, but all the examples I've see are ones where it return values. The only Examples I can get my hands on, uses the CASE in a select statement, I don't want to use it in select statement, I want to set my variable without having a bunch of IF THEN ELSE statements. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks Feb 29, 2016 · Note that I just changed your query so the sub-query in the CASE statement just have one level, Replacing String from each row of the column in oracle sql select. 7 WHEN 'D+' THEN 1. * ,(CASE WHEN (A. I would like to add if the month is &gt;= 7 I get as outp Jul 11, 2016 · I look for a working example where I can use mutliple when case statment wihch check to verify if a specific text is contained: e. assign_date > '01-JAN-13' THEN (select (CASE WHEN count(*) > 0 THEN 'BAD' ELSE 'GOOD' END) FROM transaction_table WHERE ACCOUNT = :V_ACCT AND transaction_date < :V_TRAN_DATE AND transaction_code = :V_TRAN_CODE AND :V_TRAN_CODE IN (1,6,25) AND attorney_id = :V_ATTY_ID ) ELSE function_legal_chk(:V_ACCT, :V_TRAN_DATE) END) FROM legal Mar 26, 2016 · I have the below piece of query and it runs but not producting what I want. select coalesce(max(cntrctr_lcns_seq_no), 1) as cntrctr_lcns_seq_no from nuwmsweb. Both perform good. select case when char_length('19480821')=8 then (select count(1) from Patient ) when char_length('19480821')=10 then (select count(1) from Doctor ) end The CASE statement has two types: simple CASE statement and searched CASE statement. One way I could think was using a Switch When expression in select query. sql> ed wrote file afiedt. For each case type, the SLA days are worked out slightly differently. season, MIN(case when sp. object_name)) then 'NO_TABLE' else 'END' end case_with_exist from user Jul 2, 2014 · Hi sql wizards and sorcerers, I am trying to work out SLA days based on a particular parameter (case-type). COL1 ELSE SELECT A1. Borrowing your example var l varchar2(4); exec :l := '551F'; with rws as ( select '551C' assembly_line from dual union all select '551S' assembly_line from dual union all select '551F' assembly_line from dual union all select '1234' assembly_line from dual ) select * from rws where case when :l Mar 9, 2012 · I'm trying to check whether a list of items contain specific number in the condition part of a case statement in Oracle 10g. Most results I find are about how to make an Alias based on a case statement which isn't the same problem. since the CASE statement is like a series of IF statements, only using the key word WHEN. WHERE clauses and check constraints). select object_name,object_type, case when 1 in (select 1 from dual where EXISTS (select 1 from user_tables tab where tab. idcustomer = T. 1) LEFT JOIN the JOBS table and then use your CASE statement. number) THEN 'Y' ELSE 'N' END) AS YES_NO FROM some_other_table a; Value Match (Simple) CASE Statement. rate FROM ShiftRates sr WHERE (sr. colourdescription as colourdesc, a. id AND tableid = CASE WHEN mytable. ALSO: You have no case statements in your code. The CASE statements supported by PL/SQL are very similar to the CASE expressions. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. SELECT a. 5 WHEN emp. Like this: Select T. skucode, a. They are control structures that select (case when exp_date > sysdate then 1 when exp_date <= sysdate then 2 else 3 end) expired, count(*) from mytable group by (case when exp_date > sysdate then 1 when exp_date <= sysdate then 2 else 3 end) Oct 20, 2008 · I am trying to use a subquery within a Case statement with a 'where' condition that binds to the parent query. effectiveDate DESC ) --s. There are several enhancements to case available in PL/SQL: case statements; Extended case controls (from 23ai) Case statements in PL/SQL. Oracle Select Statement in IF condition. somecol; The way you had it in the question is an incorrect use of case. shiftID = s. effectiveDate < GETDATE()) ORDER BY pr. To restrict that, you have to remove that. ) You must select the value INTO a variable, and then use it. 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. TELEPHONE_NO_DAY LIKE '07%' THEN CONTACTS. it is possible do a SELECT CASE, decode, nvl or another query function when I need verify if the return of a select query is empty or has a value? For example, I have this: Record | type | I need to do this: SELECT COLUMN1, COLUMN2, CASE SOMETHING WHEN 0 THEN 'SOMETHING' ELSE CASE SOMETHING1 WHEN 'SOMETHING2' THEN (Here I need my value from other table) ELSE Jan 16, 2007 · Hi All, Can anyone tell me whats wrong im doing in the following select statement. Within a SELECT statement, the searched CASE expression allows for values to be replaced in the result set based on comparison values. It is not required for your statement, this statement should work: select count(*) from tablename a where asofdate='10-nov-2009' and a. job = 'DB' THEN salary*2 END > 1700 To solve your case is overkill but I guess you can include other cases. (Of course, you knew that already. 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 16, 2015 · This is what I got so far: select to_char(sysdate, 'yyyy') Time from dual; Which gives me: TIME 2015 Its working until this point. For example, if it's a UNION, all rows are gathered (and duplicates eliminated unless it's a UNION ALL) after all sub-SELECT statements are evaluated. COL1 FROM A1,C1 WHERE A1. somecol = z. Sep 2, 2015 · You have to add "fake" query in 'case statement'. number, (CASE WHEN EXISTS (SELECT null FROM some_table b where b. Feb 26, 2016 · The problem is that Oracle evaluates the SELECT after the WHERE clause. 0. I want to compare the two, and add a column which states if the user is present in billing_disc or not (The Y and N, in the case) If i specifi a pre determined agreement_id the select works fine. ID) AND (sr. Using case in PL/SQL. you also need acdcalls and daacdcalls in the group-by (unless you can aggregate those); Jul 2, 2010 · Just put opening and closing bracket around select statement resolve you problem . grade_id = 2 THEN (CASE ((date_completed-date_submitted)*24*60) <=120 THEN 'Yes' ELSE 'No' END) ELSE CASE WHEN REQUESTS. I then nee Oct 20, 2016 · You can also go the other way and push both conditionals into the where part of the case statement. 7 WHEN 'B+' THEN 3. sizecode, b. ID_DOC = D. Hot Network Questions Convincing the contrapositive is equivalent Mar 7, 2017 · I have a huge query and I am wondering if it is in Oracle possible to get the result of a case-when-statement and use it for comparison? My CASE-STATEMENT is declared in the Select-Statement and it looks like this. SQL works in a different way to most languages when evaluating expressions - it doesn't return true and then compare that with other values; you need to put the condition that returns true in the place where a condition or value is expected. CASE WHEN 'VariableFromLogi' = '' THEN (SELECT "InvoiceID" FROM "DataManagement_Sys" WHERE "InvoiceID" = '1111') ELSE (SELECT "InvoiceID" FROM "DataManagement_Sys" WHERE "InvoiceID" = 'VariableFromLogi') FETCH FIRST 5 ROWS ONLY END CASE Aug 19, 2011 · No. ColumnName FROM Schema. 2. So when I remove the CASE; the stored proc won't compile. z end FROM X JOIN Y on x. COL1 THEN SELECT A1. I am selecting most this fields from Global Temperory Table and few from normal DB tables. Updated query per OP's comments: create table student_totalexp2 nologging compress as SELECT a. Select Case Statement with an Insert. "2/7/2020") then I want the date range for January. Same execution time. Jan 7, 2013 · Using a SELECT statement with a searched CASE expression. 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. Oct 17, 2024 · The PL/SQL CASE statement is a powerful conditional control structure in Oracle databases that allows you to execute different blocks of code based on specified conditions. The CASE expression can have an alias, or a name for the resulting new column. In PL/SQL you can write a case statement to run one or more actions. The following query uses the CASE expression to calculate the discount for each product category i. job_id;. This brings the PL/SQL simple CASE statement and expression in line with the SQL:2003 Standard [ISO03a, ISO03b Mar 14, 2016 · I want to select *, and not have to type out all individual columns, but I also want to include a custom column with a case statement. So it is not only a matter of what Bob mentioned. It just won't work quite the way you wrote it. end_date IS NULL THEN sysdate ELSE to_date(b. May 16, 2017 · PROCEDURE GetBatchTotals(pEntityName VARCHAR DEFAULT NULL) IS BEGIN -- Sample Query SELECT e. WITH table_a AS ( SELECT DISTINCT col1 FROM table_name WHERE col2 = 'A' ) SELECT col2, SUM(CASE WHEN col1 IN (SELECT col1 FROM table_a) THEN DECODE(col2, 'A', 1, 0) ELSE 1 END ) count FROM table_name GROUP BY col2 ORDER BY col2; Apr 5, 2017 · SELECT CASE WHEN name1 <> name2 THEN name2 ELSE name1 END as calc_name, SUM(amount) as amount FROM table GROUP BY CASE WHEN name1 <> name2 THEN name2 ELSE name1 END Also, name is a reserved keyword, so I modified that alias slightly. However, dynamic SQL seems like overkill in this case. – Feb 10, 2017 · In general you can easily write the Where-Condition like this: select * from tab1 where (col1, col2) in (select col1, col2 from tab2) Note Oracle ignores rows where one or more of the selected columns is NULL. My query looks like this: SELECT 'TEST' FROM DUAL WHERE 1=1 AND EXISTS( SELECT CASE WHEN EXISTS (Select 1 from dual where 1=2) THEN 1 ELSE (Select 1 from dual where 1=2) END FROM DUAL); I want to execute my select-statement only if the case-when statement returns a record. COL1 END FROM A1,B1,C1; That is if A1. , CPU 5%, video card 10%, and other product categories 8%. id = yourtable. Since you are displaying the value as one column using your query above, it looks like your intention is to get only one value. Oracle Database uses short-circuit Oct 22, 2013 · 1) Try the code below - it's not the regex that's wrong so much as where it's located. COL1 FROM A1, B1 WHERE A1. SELECT status, CASE status WHEN 'a1' THEN 'Active' WHEN 'a2' THEN 'Active' WHEN 'a3' THEN Mar 15, 2021 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. somecol JOIN Z on x. Apr 9, 2013 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. FILENAME in (select distinct filename from tablename where asofdate='10-nov-2009' and isin is null); To add to Alex's answer: The CASE expression has two forms, the "simple" CASE expression and the "searched" CASE expression. If you actually had two tables, and they both have only one record each, then. You could use the CASE statement in a SQL statement as follows: (includes the expression clause). I need to: IF the TEXT column contains a period (. g. 08, 2) -- other categories END discount FROM products Dec 7, 2023 · There are a few differences between case in PL/SQL and Oracle SQL. start_date,'yyyymm')) as days_experience FROM student One problem here is that you may have multiple values coming back from your select statement. 1. Jul 29, 2013 · Edit: Actually, you can re-factor both of those sub-queries into a JOIN, which would probably be faster, anyway. in WebAPI, because JS treats this differently. – Apr 4, 2018 · The problem is the parentheses; you should not have those around the select statements: DECLARE l_today_date VARCHAR2(15) := TO_CHAR(SYSDATE, 'DAY', 'NLS_DATE_LANGUAGE=ENGLISH'); BEGIN CASE l_today_date WHEN 'MONDAY' THEN SELECT st_time AS SYS_DATE, Dec 2, 2004 · For appeals, questions and feedback about Oracle Forums, CASE in SELECT statement. In a "simple" CASE expression you compare one expression to one or more values; that doesn't work with NULL, as we know from the first week of SQL classes. SELECT ID, NAME, (SELECT (Case when Contains(Des CASE WHEN (10 > 0) THEN 1 ELSE 0 END (It can be used in SELECT QUERY) SELECT CASE WHEN (10 > 0) THEN 1 ELSE 0 END AS MY_BOOLEAN_COLUMN FROM DUAL Returns, 1 (in Hibernate/Mybatis/etc 1 is true). At this point everything is good, but I still need to add a few checks. SELECT AVG(CASE WHEN e. Starting with Oracle 9i, you can use a CASE statement in an SQL sentence. The result of this statement is 1, 2, or 3. COL1=C1. SELECT CASE WHEN (10 > 0) THEN 'true' ELSE 'false' END AS MY_BOOLEAN_COLUMN FROM DUAL Feb 24, 2020 · For the query below, I'm trying to pull a specific date range depending on the current day of the month. 05, 2) -- CPU WHEN 2 THEN ROUND (List_price * 0. May 7, 2017 · Using Aliases in CASE Statements. somecol = y. . If no condition is found to be true, and an ELSE clause exists, then Oracle returns else_expr. Mar 2, 2017 · I have a huge query used within a case-when block. e. SELECT. table_name = obj. ColumnName = pEntityName END ); END GetBatchTotals; 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. Otherwise I have (2) case statements: SELECT CASE WHEN EXISTS ( SELECT * FROM MYTABLE_A WHERE timestamp = to_char(sysdate-1, 'yyyymmdd') || '0000 Nov 21, 2017 · The sub-query will contain the SUM(C_Amount) in each row (since you are using the analytic function with OVER (PARTITION BY item)) and then summing these in the outer query you are effectively doing SELECT COUNT(1) * SUM(C_Amount) AS S_C_Amount FROM table A GROUP BY item which is not the output the OP wants. Otherwise, Oracle returns null. May 27, 2014 · case supports a syntax to evaluate boolean conditions. first is not null then 'Pass' else null end check_first_name from table_records a1 left outer join ( select id from table_records group by id having count(*) > 1 ) a2 on a1. buf 1 with t1 as 2 ( 3 select 1 as seq, 'nothing 1' as some_type from dual union all 4 select 2 as seq, 'nothing 2' as some_type from dual union all 5 select 3 as seq, 'something 1' as some_type from dual union all 6 select 4 as seq, 'something 2' as some_type from dual union all 7 select 5 as seq, 'something 3' as Jul 27, 2012 · Better you would have use CASE statement. colourcode LEFT OUTER JOIN skuprcevnt sp ON sp Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. Sep 27, 2013 · I need to run a CASE expression on a number of columns, the columns are Boolean, so if it's 0 I need to populate the column with the column name and if it's 1, I ignore the column/value. I have a table with the below data, SELECT DEPT_NO, DEPT_NAME FROM SORTNG_LOGIC; DEPT_NO DEPT_NAME May 16, 2013 · In PLSQL you can write Begin, Exception and End block within the case statement. if the column is one of the following : I, D, Jul 20, 2016 · ORA-06592: CASE not found while executing CASE statement. Query: select id ,CASE WHEN COUNT(id ) &gt; 1 THEN 'X' ELSE ' ' END AS Dual from x group by id Results: ID Dual the CASE statement will produce a result and you can compare it or use it on other operations. The result of the case statement is either 1 or 0. id is not null then 'Duplicate ID' else null end check_id, case when a1. selector can have any PL/SQL data type except BLOB, BFILE, or a user-defined type. You have a case expression. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks Otherwise, Oracle returns null. * ,D. member_sk, SUM(CASE WHEN b. Another option is dynamic SQL, where you actually create a string with the SQL statement and then execute it. Rows-to-columns using CASE. select case when val=2 then (select val1 from table1) else 'false' end from table Feb 20, 2014 · Point 1: For the query, you are trying, the from example in the last will cause to loop through all the records and fetch all the records. Aug 8, 2021 · select case region when ‘N’ then ’North’ when ‘S’ then ’South’ when ‘E’ then ’East’, when ‘W’ then ’West’ else ‘UNKNOWN’ end from customer; Searchable Case statement are case statement where we specify a condition or predicate (case statement in oracle with multiple conditions) Dec 30, 2016 · Assume your table name is table_name, One way to do it is using this:. Both types of CASE statements support an optional ELSE clause. The CASE statement can be used in Oracle/PLSQL. rate END) AS rate Nov 30, 2017 · Unless you are worried about strings with equal signs not appearing at the end of the string, I wouldn't bother with the case statement, and if you are concerned about that, I'd recommend the REGEXP_REPLACE function instead. COLUMN2) AND (D. It's intended use is to allow you to use Boolean logic where it is not typically allowed (e. TableName e WHERE ( CASE WHEN pEntityName IS NULL THEN e. You can use CASE statement : select case when expvalue. num_val = a. The PL/SQL CASE statements are essentially an alternative to IF . If I replace them with case will it work faster? For example; select case sum(nvl(birikim,0)) when null then 0 else sum(nvl(birikim,0) end instead of using this, select nvl(sum(nvl(birikim, 0)), 0)) Mar 22, 2011 · Since 10gR2, Oracle allows to fine-tune the behaviour of string comparisons by setting the NLS_COMP and NLS_SORT session parameters:. You select only the records where the case statement results in a 1. I mocked up some quick test data and put 10 million rows in table A. This is especially important, if you hand over the raw results to a JSON formatter as it is done e. Here, we explore the syntax, types, and practical use cases of the PL/SQL CASE statement to make better decisions and improve your ability to use conditional logic in Oracle Oct 7, 2020 · Oracle SQL: Using same alias In CASE statement to select in one case one column, in the other two columns and another three with the same alias 1 Access alias in CASE statement Sep 3, 2013 · Here is correct syntax: SELECT lp. 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; Apr 27, 2004 · Moreover, using the CASE function, multiple conditions provided in separate SQL queries can be combined into one, thus avoiding multiple statements on the same table (example given below). COLUMN3 = 1) AND (DISTINCT A. If you know that is not the case, then this should work: Oct 25, 2016 · Multiple condition in one case statement using oracle. Flowid Feb 4, 2022 · level pseudocolumn goes with select (not just values). My question is: do Oracle 12c - Insert with multiple case conditions. Nov 12, 2009 · A CASE statement cannot return more than one value, it is a function working on one value. grade_id = 1 THEN (CASE WHEN ((date_completed-date_submitted)*24*60)<=30 THEN 'Yes' ELSE 'No' END) ELSE CASE WHEN REQUESTS. In you first version you have Apr 18, 2017 · The Select statement below is returning the columns attached. Oracle CASE expression syntax is similar to an IF-THEN-ELSE statement Yes, it's possible. This statement works. ) sign, mean This is precisely the sort of scenario where analytics come to the rescue. So, once a condition is true, it will stop reading and return the result. Oracle Case in WHERE Clause with multiple conditions. xfgrzj ksqkhpj tkbrk ffjqpqc jlo zfev foagrx dssc bphrnkz eari