Select in case statement oracle select case when s. y else c. tst Dec 7, 2023 · If you want to do if-else-then logic in select, where or anywhere else in a statement, you need a case expression. col1 matches B1. See an example below that would do what you are intending. The following example displays the list price as a text comment based on the price range for a product. 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 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 Jan 12, 2015 · 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 (CASE WHEN REQUESTS. salary > 2000 THEN e 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. Aug 4, 2017 · Like you'd select any other column or expression into a variable! You put your case statement in the select clause and into after between the select and from clauses: set serveroutput on declare l varchar2(10); begin select case when 1=1 then 'THIS' else 'THAT' end into l from dual; dbms_output. 2) Keep my CASE statement with your SELECT 1 FROM JOBS J WHERE J. PFILE is null then s. 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'; Mar 15, 2021 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. Please understand that PL/SQL is not another name for "Oracle SQL". THEN . Therefore, it can't be used to conditionally decide among multiple columns or other operati 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 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 May 7, 2017 · Using Aliases in CASE Statements. Oracle CASE expression has two formats: the simple CASE expression and the searched CASE expression. Simple PL/SQL CASE statement. May 2, 2016 · I am not sure if this is what you want but you just need to copy the statements where table_a and table_b are: case when v_id = 1 then select a. 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. select object_name,object_type, case when 1 in (select 1 from dual where EXISTS (select 1 from user_tables tab where tab. COL1 ELSE SELECT A1. 1) LEFT JOIN the JOBS table and then use your CASE statement. COL1=C1. selector can have any PL/SQL data type except BLOB, BFILE, or a user-defined type. number) THEN 'Y' ELSE 'N' END) AS YES_NO FROM some_other_table a; 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. put_line(l); end; / THIS simple_case_statement. A simple CASE statement evaluates a single expression and compares the result with some values. idperson , CASE WHEN T. SOURCE_TYPE = 1 then r. To match these requirements I tried to make use of the SELECT CASE WHEN clause in the SQL statement as follows: 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 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) Apr 14, 2023 · CASE Statement and CASE Expression Enhancements in Oracle Database 23ai. The CASE statement has two types: simple CASE statement and searched CASE statement. num_val = a. COLUMN4 = D. g. Within a SELECT statement, the searched CASE expression allows for values to be replaced in the result set based on comparison values. Apr 27, 2004 · Here is the basic syntax of an Oracle CASE When statement: The following examples will make the use of CASE expression more clear, using Oracle CASE select statements. E. . Depending on each weekday attribute in table ROUTINE a case statement should be used, that checks if r. z end FROM X JOIN Y on x. So, once a condition is true, it will stop reading and return the result. ) You must select the value INTO a variable, and then use it. Also: plain SQL only has case expressions, not case statements, and indeed everything in your post is case expressions. a = 'something' then b. The difference is that it uses EXISTS instead of IN. id, b. object_name)) then 'NO_TABLE' else 'END' end case_with_exist from user 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 Jul 26, 2019 · Hello GuysNeed some help on the select case statement. idperson) ELSE (SELECT name from Providers where idprovider = T. The syntax is: 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. WHEN selector_value THEN statement. 0. 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. somecol = z. In Oracle database 23ai the simple CASE statement and expression are more flexible, allowing dangling predicates and multiple choices in a single WHEN clause. 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 Yes, it's possible. "2/7/2020") then I want the date range for January. Sep 2, 2015 · You have to add "fake" query in 'case statement'. . col1 then select from A1 and B1 and if not select from A1 and C1 Thanks To add to Alex's answer: The CASE expression has two forms, the "simple" CASE expression and the "searched" CASE expression. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks simple_case_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 Aug 21, 2015 · SELECT case when x. : Mar 15, 2021 · WITH x AS ( SELECT level+1 a,level+2 b,level+3 c,level+4 d,level+5 e FROM dual CONNECT BY level <= 10) SELECT CASE a+b+c+d+e WHEN <30 THEN 'Below 30' WHEN <60 THEN 'Below 60' WHEN IS NULL THEN 'NULL' ELSE 'Above' END FROM x; 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 What does PL/SQL have to do with this? What you have shown is plain SQL. Same execution time. select case when val=2 then (select val1 from table1) else 'false' end from table Even in Oracle (and in fact in the SQL standard), CASE is an expression that returns a single value. (Of course, you knew that already. This brings the PL/SQL simple CASE statement and expression in line with the SQL:2003 Standard [ISO03a, ISO03b simple_case_statement. * ,(CASE WHEN (A. Thanks! – Rows-to-columns using CASE. 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 (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 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. If it's the 20th or less (e. COL1 FROM A1,C1 WHERE A1. It is not used for control of flow like it is in some other languages. Both formats support an optional ELSE clause. 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. ID_DOC = D. idcustomer = T. The PL/SQL CASE statements are essentially an alternative to IF . 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; 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. You can rewrite it to use the ELSE condition of a CASE: SELECT status, CASE status WHEN 'i' THEN 'Inactive' WHEN 't' THEN 'Terminated' ELSE 'Active' END AS StatusText FROM stage. I have (2) case statements: SELECT CASE WHEN EXISTS ( SELECT * FROM MYTABLE_A WHERE timestamp = to_char(sysdate-1, 'yyyymmdd') || '0000 Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. table_name = obj. selector_value can be an expression of any PL/SQL type except BLOB, BFILE, or a user-defined type. Expression whose value is evaluated once and used to select one of several alternatives. COLUMN3 = 1) AND (DISTINCT A. If none of the WHEN The syntax for the CASE statement in Oracle/PLSQL is: CASE [ expression ] WHEN condition_1 THEN result_1 WHEN condition_2 THEN result_2 WHEN condition_n THEN result_n ELSE result END Parameters or Arguments expression Optional. I have a stored procedure that contains a case statement inside a select statement. The CASE expression can have an alias, or a name for the resulting new column. Like this: Select T. TUESDAY_YN = 1 then insert next 3 tuesdays, etc. value from table_c c; end as t Jun 29, 2011 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. COL1 THEN SELECT A1. somecol JOIN Z on x. SELECT ID, NAME, (SELECT (Case when Contains(Des Oct 20, 2008 · I am trying to use a subquery within a Case statement with a 'where' condition that binds to the parent query. Notice the statement is finished with the END CASE keywords rather than just the END keyword. somecol; The way you had it in the question is an incorrect use of case. The CASE statement chooses from a sequence of conditions, and executes a corresponding statement. Feb 24, 2020 · For the query below, I'm trying to pull a specific date range depending on the current day of the month. At this point everything is good, but I still need to add a few checks. Both types of CASE statements support an optional ELSE clause. COLUMN2) AND (D. Oracle Database uses short-circuit May 27, 2014 · case supports a syntax to evaluate boolean conditions. SOURCE_REF when s. COLUMN4 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. * ,D. 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: Otherwise, Oracle returns null. Usually you'd use DUAL for this sort of thing, testing if the variable is set: var_type := 'B'; SELECT CASE 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. end . The simple CASE statement has the following structure: 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, 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; CASE Statement. ) sign, mean 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 |. If no condition is found to be true, and an ELSE clause exists, then Oracle returns else_expr. COL1, B1. value from table_a a; when v_id = 2 then select b. : Returning categories based on the salary of the employee. COLUMN4) THEN 1 ELSE 0 END) AS COLUMN8 FROM TOTAL1 A FULL OUTER JOIN TOTAL2 D ON A. idperson) END Name from myTable T The SQL CASE Expression. 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; simple_case_statement. COL1 FROM A1, B1 WHERE A1. Both perform good. 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 ; Apr 18, 2017 · The Select statement below is returning the columns attached. The CASE statements supported by PL/SQL are very similar to the CASE expressions. ELSIF statements. Nov 20, 2015 · Both solutions works well. when sal < 3000 then 'category 2' . I need to: IF the TEXT column contains a period (. number, (CASE WHEN EXISTS (SELECT null FROM some_table b where b. This is a series of when clauses that the database runs in order: For example, if you want to map exam correct percentages to grade letters according to these rules: CASE expressions let you use IF THEN ELSE logic in SQL statements without having to invoke procedures. The CASE statement evaluates a single expression and compares it against several potential values, or evaluates multiple Boolean expressions and chooses the first one that is TRUE. END CASE is mentioned in the Oracle documentation here. type = 'C' THEN (SELECT name from Customers where C. 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 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. cntrctr_lcns_info where third_party_id = thirdPartyId Jul 2, 2010 · Just put opening and closing bracket around select statement resolve you problem . It is the value that you are comparing to the list of conditions. I'm trying to do it this way: SELECT A. ALSO: You have no case statements in your code. COLUMN1 = D. They are control structures that Mar 15, 2021 · Is it possible to use a SELECT statement within case For ex, SELECT CASE WHEN A1. MONDAY_YN = 1 then insert the next 3 mondays, if r. else 'category 4' . value from table_b b; else select c. SELECT a. grade_id = 1 THEN (CASE WHEN ((date_completed-date_submitted)*24*60)<=30 THEN 'Yes' ELSE 'No' END) ELSE CASE WHEN REQUESTS. when sal < 4000 then 'category 3' . One alternative is to use a case expression within the SQL SELECT INTO statement, as David Goldman has shown in his Answer. It just won't work quite the way you wrote it. 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. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). FILE end fileName from mtas s, gtas r where s. COL1=B1. COL1 END FROM A1,B1,C1; That is if A1. id, a. ID_DOC withount joining the JOBS table. May 9, 2012 · I don't have an Oracle install to test against, but I have experienced Oracle 9i/10g being weird with CASE statements, sometimes requiring you to use END CASE rather than just END. Otherwise, Oracle returns null. id, c. grade_id = 2 THEN (CASE ((date_completed-date_submitted)*24*60) <=120 Value Match (Simple) CASE Statement. If you actually had two tables, and they both have only one record each, then. SELECT AVG(CASE WHEN e. somecol = y. object_name)) then 'IS_TABLE' when 1 in (select 1 from dual where not EXISTS (select 1 from user_tables tab where tab. I would like to add if the month is >= 7 I get as outp Dec 30, 2016 · Assume your table name is table_name, One way to do it is using this:. col1 then select from A1 and B1 and if not select from A1 and C1 Thanks 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. selector. You have a case expression. Jan 7, 2013 · Using a SELECT statement with a searched CASE expression. COL1, C1. Otherwise simple_case_statement. select coalesce(max(cntrctr_lcns_seq_no), 1) as cntrctr_lcns_seq_no from nuwmsweb. sszez zyaimnl hjdfk mnywyw uuu vqxcldy fwowycmz qqhokd xsoxa kev