How to return multiple values for then clause in an sql case expression oracle. But I want something like l_status = 'n','s' I am using this case statement in the where How can I return two columns if a condition is satisfied in case? The short answer is you can't. Another way to return many values using CASE is to return them as a complex type. It is not an assignment but a relational operator. ) You can use another column to store the other id with (a similar case) and use nulls to represent the else values, just like you're doing now. The code up the top seems to be what I need, but I'm having trouble tailoring it to my needs. Instead of checking on @check you should check on the element that has multiple options. dsc' INSERT INTO TABLE DEPT_LOADER WHEN DEPT = '10' FIELDS If you want to have this evaluation only once, the query gets slightly more complicated, as you'd go in two steps: SELECT CASE WHEN which = 'left' THEN stddev_left ELSE stddev_right END AS value1, CASE WHEN which = 'left' THEN mean_left ELSE mean_right END AS value2, CASE WHEN which = 'left' THEN median_left ELSE median_right if the value of @check is 0 then return 'typeA' otherwise return ('typeB' OR 'typeC') But how can SQL return multiple values? Most likely you should change your CASE statement like below. sql Case statement bring back multiple values. Here's more about Oracle Scalar Subqueries: Here are the CASE expression examples from the PostgreSQL docs (Postgres follows the SQL standard here):. The simple CASE is more concise when you’re just comparing a single expression against multiple possible values. Code : select * from tbl where regexp_like(col, CASE is an expression - it returns a single result of a well defined type:. The problem is you trying to shove multiple values into a single field for a single row. you might want to move the opening parentheses in the second then clause one word right. Or perhaps something like: WHERE. If your test value matches the first WHEN clause, the THEN clause is returned and the CASE expression is finished. 18. SELECT a, CASE a WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'other' END FROM test; Functions destroy performance. Additionally, you have AND t. Your control file should be like; LOAD DATA INFILE 'F:\SQL_Loader\dept. Number WHEN '1121231','31242323' THEN 1 WHEN '234523','2342423' THEN 2 END AS Test FROM tblClient c; When working with SQL, one might often need to run complex queries that involve multiple conditional statements. SELECT a, CASE WHEN a=1 THEN 'one' WHEN a=2 THEN 'two' ELSE 'other' END FROM test; or. (select name from TABLE3 where TABLE1. If all rows for a specific 'Utility' do have a 'todate', I want the value to be 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The subquery (select acct_id from TABLE2 group by acct_id having count(*) = 1 ) is OK because it will only ever return one value. For example, JSON, XML or an object type. The longer answer is you can do things like: - Concatenate all the columns into Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. I would like to return multiple values in my case statement, such as : SELECT CASE WHEN <condition 1> THEN <value1=a1, value2=b1> WHEN <condition 2> THEN <value1=a2, I am using the case statement in the cursor WHERE condition something like the below:---example select case when (l_eno is null and l_ename is null) then l_status = 'new' how can return multiple values for THEN in CASE. If no match is found, it returns the ELSE value. You should use multiple INSERT INTO DEPT_LOADER . I know that l_status stores only 1 value. It isn't really shown in the doc for SELECT (at least I can't find it now. If that happens an ORA-01427 exception is thrown. There are several enhancements to case available in PL/SQL: case statements; Extended case controls (from 23ai) Case statements in PL/SQL. Both IIF() and CASE resolve as expressions within a SQL How to return multiple values for THEN clause in an SQL CASE expression Hi Tom,The question which i am asking might look very simple but for the past 2 days I have been trying for a solution and checking in multiple forums but couldn't get any clue. This is similar in Is there anyway that I can change column name through THEN clause in CASE STATEMENT. The SQL CASE Expression. id2 END as column_2 Check the official documentation for more information. Using dynamically created IN clauses means the query optimizer does a 'hard parse' of every query. Viewed 785 times 1 My "files" table data is SQL return multiple values from CASE statement. Once it finds a match, the associated value is returned. However, CASE expressions are indirectly needed inside the CHOOSE() function to perform the operations completely. So now you can build conditions in the WHEN clause. If there is no ELSE part and no conditions are true, it returns NULL. to values. *, (case colB when 'January' then 1 when 'February' then 2 when 'March' then 3 when 'April' then 4 when 'May' then 5 when 'June' then 6 when 'July' then 7 when 'August' then 8 when 'September' then 9 when 'October' then 10 when 'November' then 11 when 'December' then 12 end) as monthnum from t ) select colA, (select top 1 The CASE expression is like a more flexible version of the DECODE function. The CASE expression has two formats: simple CASE and searched CASE. Oracle Case in WHERE Clause with multiple conditions. Instead, use AND and OR:. The result of the case statement is either 1 or 0. In SQL case statement we pass the value and check the case according to value and return string. Take a look at Regular expressions in Perl with examples. g. A Case statement can only return one value. For example: select from emp where case when bonus is null then salary else salary + bonus end > 4000 Here emp is a table, and bonus and salary are two of the columns in that table. Modified 2 years, 10 months ago. [desc] = 'string4' THEN If they choose the No Selection option, then I just want to return all states by default, otherwise return just the list of states that are in my comma-separated list. 11. But instead of returning String, i want to return an expression. If the I need to use a CASE WHEN statement in my query with multiple 'THEN' options. sql The SQL CASE Expression. This is how my code looks but it is not working. acct_id= TABLE3. I think you don't need CASE statement , you can use IN operation instead of Case , like this SELECT * FROM FRUIT WHERE TYPE = 'something' AND COLOR IN ('RED', 'YELLOW') OR TYPE The case statement is an expression that returns a single value. SELECT student_id, course_id, CHOOSE( CASE grade A Subquery in the Select clause, as in your case, is also known as a Scalar Subquery, which means that it's a form of expression. The value match CASE expression, or simple CASE expression, compares the value of the expression (DEPTNO), with the list of comparison expressions (10 - 40). I just wanted to show the pattern that works like IN in oracle with multiple fields. Edit starts here. SQL:2003 standard allows to define multiple values for simple case expression:. Related. To be honest, I can't recall if I found it in the docs or what. a SQL statement needs to return a fixed set of columns, including the column name. select ID, TERM_CODE, DETAIL_CODE from tableName where TERM_CODE In the realm of SQL, the CASE WHEN statement functions much like an if-then-else expression, allowing us to create custom classifications within a query. 3) subquery. 1. SQL Multiple LIKE Statements. MYSQL CASE THEN statement with multiple values. Knowing that you Return multiple values for 'Then' clause in an SQL case expression. The conditions are evaluated sequentially, and the first condition that is met determines the result. The CASE expression evaluates a list of conditions and returns one of the multiple 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. Thanks for accepting this as the answer but Tony Andrews solution is a lot more straightforward and, in my view, the better answer. 5 6 b) If a <result> specifies a <value expression>, then its value 7 is the value of that <value expression>. – I need to create a CASE statement that will look at the multiple rows for a 'Utility' to determine the output. If you use ColumnName in your where clause, you might not like the results because you used it as an alias. Even if a value actually meets several WHEN conditions, the first condition it meets is the only one that will be returned. Other programming languages use similar logic – e. . The column must also have the same data type as expression. Evaluates a list of conditions and returns one of multiple possible result expressions. I have written the following query and in this condition i can't use in clasue. But it's important to build them accurately. ) SELECT * FROM <table_name> WHERE (value_type = 1 and CODE1 = 'COMM') OR (value_type = 1 and CODE1 = 'CORE') (In this case, you could make it shorter, because value_type is compared to the same value in both combinations. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). The table structure is as follows: application_id name location_id ----- 1 Joe Blogs 34 2 John Smith 55 IF/THEN logic with CASE expressions in SQL - SQL Office Hours August 2023 Scripts. Something like this: case ColumnName when 'A' then 'Apple' when 'B' then 'Banana' end ColumnName, case simple-case-statement-when-clause The value of the expression before the first WHEN keyword is tested for equality with the value of each expression that follows the WHEN keyword. 40. region IN If you read the documentation you will find 2 things 1) Its a case expression, not a statement, and that 2) it can only return a scalar value, not an expression. If there is a NULL 'todate' in any row for a specific 'Utility' (Solid Waste for example) I want to create a 'Status' column with a value of 'Active'. create global temporary table LOOKUP ( ID NUMBER ) on commit delete rows; -- Do a batch insert from your application to populate this Hi, Dieter Glad that the (+) syntax is helpful for you. 1 "cased" where, multiple values for one when. Return value. I've tried to remedy this by using the IN or ANY statements, but looks to me like the CASE expression simply is unable to output sets of multiple values. The query below will return the records where TYPE is either typeA or You can use the slightly more robust case syntax and express the cases as conditions instead of just possible values:. A case expression returns a single value. DETAIL_CODE IN (SELECT t. I have a scenario where I have to run a report in automatic and manual mode. put_line('Good'); WHEN grade = 'D' THEN dbms Ordering Conditions in CASE. Of course you can. The optional ELSE clause allows I have a codition in which i need to use multiple parameters in where clause using Conditional operator. SQL CASE with one condition and with t as ( select t. Ask Question Asked 5 years, 7 months ago. SQL processes CASE expression from top-to-bottom. 8 9 2) Case: 10 11 a) If the <search condition> of some <searched when clause> in 12 a <case specification> is true, then the value of the <case 13 Oracle 10g has functions that allow the use of POSIX-compliant regular expressions in SQL: REGEXP_LIKE; REGEXP_REPLACE; REGEXP_INSTR; REGEXP_SUBSTR; See the Oracle Database SQL Reference for syntax details on this functions. DETAIL_CODE FROM which is just like doing AND 1 IN (SELECT 1 FROM . A reader, March 11, 2021 - 4:38 am UTC 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: WHERE TRUNC(C. It stops processing as soon as a WHEN clause is true. Add a comment | 2 Please do note that it is not a case STATEMENT, it is a case EXPRESSION. type="bk" THEN books. How to return multiple values for THEN clause in an SQL CASE expression Hi Tom,The question which i am asking might look very simple but for the past 2 days I have been trying for a solution and checking in multiple forums but couldn't get any clue. The above syntax allows the user to select specific columns from a table while creating a new column (new_column) with values calculated based on specified conditions using the CASE WHEN statement. SELECT IIF(Obsolete = 'N' OR InStock = 'Y', 1, 0) AS Salable, * FROM Product This is effectively just a shorthand (albeit not standard SQL) way of writing CASE. Thanks in Advance, i use an oracle 10g. DISBURSALDATE) >= TRUNC( SYSDATE - (CASE WHEN to_char(sysdate,'Day') = 'Sunday' THEN 3 ELSE 1 END) -- this 1 1) Case: 2 3 a) If a <result> specifies NULL, then its value is the null 4 value. multiple Like expression in sql query using case exprssion. This is where the SQL CASE expression comes into play. CASE expressions allow you to set conditions for your data and use similar logic to if-then statements to search your data, Multiple CASE WHEN statements allow you to implement conditional logic in SQL queries, allowing for the evaluation of multiple conditions and the execution of different actions You have to repeat your case construct for each column name. I prefer the conciseness when compared with the expanded CASE version. put_line('Excellent'); WHEN grade = 'B' THEN dbms_output. Essentially a versatile and powerful tool, the CASE expression enables users to perform conditional logic within SQL queries, making it tremendously helpful for dealing with diverse Oracle SQL CASE expression in WHERE clause only when conditions are met. You can make your aliases whatever you want. select id, case when V1=1, then 'A' when V2=1, then 'B' when V3=1, then 'C' when V4=1, then 'D' when V5=1, then v5_text Returning Multiple Columns under a single Then Clause using Case in PL/SQL. id1 END as column_1, CASE WHEN wall. You select only the records where the case statement results in a 1. In where clause I want to return only one row based on condition: if Description contains "SEMI" and SEMI_GV contains SEMI, return this row (2nd row) if Description contains anything else, return this row (1st row) The WHERE clause is working for the case when description contains the 'semi' in it, however I tried to put the another conditions but then it returns all the rows, because for each the value collumn is different. For Automatic mode - all the paramete You cannot return an expression from the THEN clause of a CASE expression; it needs to return a single scalar value. 13. The same WHERE clause can be expressed more simply, but regardless of reformulation, it will refer to both columns. 3. case statement in SQL, how to return multiple variables? 1. But you could use a common-table-expression(cte): with cte as ( Select IsNameInList1 = case when name in ('A', 'B') then 1 else 0 end, IsNameInList2 = case when name in ('C', 'D') then 1 else 0 end, t. – dnoeth. SELECT name, CASE WHEN table1. The CASE expression returns a value. select * from cardimport where STATUS = CASE WHEN STATUS = '' THEN 'F' ELSE STATUS END Let’s try the example from the previous section again, but this time we’ll use the CHOOSE() function instead of the IIF() or CASE expression. [desc] = 'string1' THEN 'String 1' WHEN codes. For Automatic mode - all the paramete Since web search for Oracle case tops to that link, I add here for case statement, though not answer to the question asked about case expression: CASE WHEN grade = 'A' THEN dbms_output. From SQL Server 2012 you can use the IIF function for this. The question is specific to SQL Server, but I would like to extend Martin Smith's answer. 1 1) Case: 2 3 a) If a <result> specifies NULL, then its value is the null 4 value. bad' DISCARDFILE 'F:\SQL_Loader\dept. However, it’s less flexible than the searched CASE, which can handle multiple conditions and more complex logic. Commented Jul 2, 2010 at 6:38. Returning multiple values in a CASE expression. * from table ) select userid , case when IsNameInList1=1 then 'Apple' when IsNameInList2=1 then 'Pear' end as snack , case ColumnName when 'A' then 'Apple' when 'B' then 'Banana' end ColumnName, case ColumnName when 'A' then '1' when 'B' then '2' end ExtraColumn, There is a gotcha here. So, once a condition is true, it will stop reading and return the result. Commented May 15, SQL Case and LIKE in where clause. In PL/SQL you can write a case statement to run one or more actions. Kindly guide me how can i return multiple parameters from case clause. If you are not adverse to string manipulation, you could do something like: left(org_status_letter, charindex('|', Understanding CASE Expression Syntax. Is this is possible using oracle This works well until the sub-select returns multiple rows. So, once a condition is true, it In a CASE statement with multiple WHEN clauses, the order is significant. Let’s perform IF-THEN logic in SQL:. The SQL CASE expression allows you to evaluate a list of conditions and returns one of the possible results. Oracle SQL - Multiple return from case. acct_id) could return multiple values depending on your data. SQL Server: use CASE with LIKE. Using case in PL/SQL. put_line('Very Good'); WHEN grade = 'C' THEN dbms_output. tag = 'Y' THEN 'other string' WHEN codes. The subquery returns a result set of one column to test for the match. Depending on the fulfillment of conditions, EDIT 2: After doing a bit more reading on the subject it seems that I need a stored procedure to do this. SELECT CASE c. Python uses if , elif , and else , Followed the IN operator is a list of comma-separated values to test for a match. The IN operator returns true if the value of Summary: in this tutorial, you will learn how to use the SQL CASE expression to add the logic to the SQL statements. All the values must have the same data type as expression. 2. For some complex WHERE clauses, it may make sense to use it (your current one can be solved without, as @Somebody is in trouble's answer shows), but you need to structure it to return a single result This construct proves invaluable in handling scenarios where more than one condition needs consideration. 0. [desc] = 'string3' THEN 'String 3' WHEN codes. [desc] = 'string2' THEN 'String 2' WHEN codes. If no condition is found to be true, and an With a simple case you can check if an input equals any listed key. By enclosing the queries in parentheses, you are converting them (syntactically) to values. I'm afraid you can't return multiple columns from a single Scalar Subquery, no. sql - problems with conditional WHERE clause with CASE statement Using Case statement in Where This will return the same row multiple times if Field1 matches multiple LIKE. Oracle SQL CASE expression in WHERE clause only when conditions are met. This structure of this is: If the <selector> matches none of In this article, we’ll explore how to use the CASE statement with multiple conditions, providing simple examples that should work across most major relational database Here is a snip-it of code from a where clause where I needed it to return multiple values: AND CASE '{EOC_TEST_TYPE}'::text WHEN 'NGSYB' THEN t. This query is designed in Oracle v10, and I am eligible to use only select queries and not to create procedures. So something like this: ELSE 2 END. Example: CASE WHEN wall. To a specify the column name in the resultset, assign an alias. SQL> select 2 case 1+3+4 3 when 5 then 12 4 when 6 then 13 5 when 8 then 15 6 end x 7 from dual; X ----- 15 Let me explain again . 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 SQL*Loader does not allow OR operator in WHEN clauses. short_name IN Is there a "better" way to rewrite a SELECT clause where multiple columns use the same CASE WHEN conditions so that the conditions are only checked once? See the example below. Introduction to SQL CASE expression. If there’s a match, it returns the corresponding THEN value. csv' BADFILE 'F:\SQL_Loader\dept. Hot Network Questions Write a program that takes an input value n and then finds the first n primes The recommended way to handle this in Oracle is to create a Temporary Table, write the values into this, and then join to this. 8 9 2) Case: 10 11 a) If the <search condition> of some <searched when clause> in 12 a <case specification> is true, then the value of the <case 13 . The differences between case expressions and statements are: You complete Obviously I can't return multiple values from a CASE clause so how else could I write this? How to return multiple values from a SQL Case subquery without grouping. SQL doesn't support multiple returns from a case. If it does you can return a corresponding value. For Automatic mode - all the I used case when but I cannot seem to return more than 1 value. Meaning that it can only return one value. If no conditions are true, it returns the value in the ELSE clause. mlp int tdgan yswo holj tydjdxsc ywogj fngazi ovmg tqih