Oracle case statement in where clause multiple values. Suppose all employees are going on a field trip.

Oracle case statement in where clause multiple values. customer_id IS NULL; and when pcustomer_id IS NOT NULL then c. For Automatic mode - all the paramete Jun 11, 2021 · SQL queries support case expressions. e more than 1 value. 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. 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. Id = '2'); DECLARE @D_VALUE VARCHAR(100) = (select value from D where D. else case when <your other conditions here> then 1 end. DETAIL_CODE FROM which is just like doing AND 1 IN (SELECT 1 FROM . In a Searched CASE statement, each condition is evaluated independently. An expression returns a single value. It means that the two values have to exist in the same row. But if query need to be performed based on multiple columns, we could not use IN clause( Mar 3, 2021 · 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. roleid AND rolename IN ( CASE WHEN (1 < 2) THEN ('Owner Role') WHEN (2 < 1) THEN ('Eval Owner Role') END); Jul 2, 2010 · I am facing a problem in executing queries with CASE statement. Using if condition in the Select statement. clientId=100 and D. FROM T1, T2 WHERE CASE T2. You select only the records where the case statement results in a 1. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The simple CASE statement has the following structure: Is there a way of combing these two techniques. 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 value or expression: Dec 10, 2021 · main table create table new_details( e_id number(10,0),ac_ec varchar2(50 byte),constraint pk_new_details primary key (e_id)); insert into new_details values(11,'ac') ; reference table: c 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. Hot Network Questions Counts repetitions within a list The WHERE clause appears after the FROM clause but before the ORDER BY clause. l_status = 'n' May 5, 2015 · The case statement is an expression that returns a single value. Oracle 9i extended its support to PL/SQL to allow CASE to be used as an expression or statement. 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. Following the WHERE keyword is the search_condition that defines a condition that returned rows must satisfy. 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: See full list on oracletutorial. Usually you pass a column as argument and it will return the first NOT NULL column value. Problematic sample query is as follows: select c 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 Apr 24, 2007 · 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. Otherwise, I am saying return all data i. l_status = 'n' 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). I then nee Sep 24, 2013 · SELECT SUM(CP) AS CPTotal, SUM(CASE WHEN Code = 'P' THEN CP ELSE 0 END) AS CPProd, SUM(CASE WHEN Code = 'S' THEN CP ELSE 0 END) AS CPSupp FROM tasks; The ELSE portion is not needed as NULL results when a value does not match any criteria in a CASE statement, and NULL is ignored on aggregation, but some prefer to include it. table_owner is compared to 'ABC' and 'DEF', if it's one of them the CASE expression has the value 1, otherwise NULL (by default). If not CASE is there any other way that I can handle. Jun 20, 2012 · CASE is an expression - it returns a single result of a well defined type:. For example: Dec 2, 2011 · Depending on your use case, instead of using a case statement, you can use the union of multiple select statements, one for each condition. – Jul 22, 2017 · 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. Apr 3, 2019 · Case statement in where clause with "not equal" condition. What it does is evaluates a list of conditions and returns one of the multiple possible result expressions. 2. for example. EmployeeId, Employee. Nov 25, 2021 · Hi, Dieter Glad that the (+) syntax is helpful for you. How to Return Multiple Values from CASE clause in Where Condition. How to get the correct values from a multiple where statements in SQL Server. Jun 23, 2009 · Use ALTER SESSION statements to set comparison to case-insensitive: alter session set NLS_COMP=LINGUISTIC; alter session set NLS_SORT=BINARY_CI; If you're still using version 10gR2, use the below statements. And this table is joined as 'a. This is what you wanted to In a (math) PhD personal statement/statement of purpose, should I use mathematical notation, or english, if math is likely clearer? Are truffles dirty? Free Speech - is it a Torah principle? Sep 18, 2013 · HAVING clause; SELECT clause; ORDER BY clause ; WHERE just filters the rows returned by FROM. Otherwise, Oracle returns null. I have a scenario where I have to run a report in automatic and manual mode. Dec 7, 2023 · There’s no if keyword in SQL. Nov 6, 2016 · I want to write the Select statement like this: SELECT somefields FROM sometable WHERE CASE variable WHEN 'blank' THEN field IS NULL ELSE field = field END Basically I either want to filter a column to find NULL values or ignore the filter and return all values depending on the value of the variable. Id = '1'); DECLARE @C_VALUE VARCHAR(100) = (select value from C where C. 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 how can return multiple values for THEN in CASE. 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 The key thing is that the counting of t. Alright, you don't need a CASE expression for the Number column. This was not an elegant solution for changing values and would require change control protocols if I had any new values. The SQL Case statement is usually inside of a Select list to alter the output. If you want to do if-else-then logic in select, where or anywhere else in a statement, you need a case expression. How it works: First &user_input is compared to 'AA'. The update includes a join to find the name and the output is evaluated in a CASE statement that supports the name being found or not found. com 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. CONTAINER_EVENT_ID = e. case in where clause - Toad SQL. (And there will be a CASE of some sort somewhere - NVL and COALESCE are CASE expressions with a different syntax. If you want to use the CASE statement in the WHERE clause, you’ll need to copy and paste the same CASE statement, instead of use the “continent” name. How can I do it? Apr 4, 2018 · Incidentally, if you were only using the l_tdoay_date value once - and didn't have the dbms_output debugging call at the end - you wouldn't need that variable; you can use case with the function call: BEGIN CASE TO_CHAR(SYSDATE, 'DAY', 'NLS_DATE_LANGUAGE=ENGLISH') WHEN 'MONDAY' THEN Mar 9, 2012 · Check for multiple values within CASE statement. 6. length), I want to execute different SQL statement. A subquery is a query nested within another query, you will learn about the subquery in the subquery tutorial. It isn't really shown in the doc for SELECT (at least I can't find it now. partnum LIKE sPartStrp||'%') Jun 16, 2011 · How to Return Multiple Values from CASE clause in Where Condition. I have written the following query and in this condition i can't use in clasue. DETAIL_CODE IN (SELECT t. I didn't know you could use the syntax "ON (my_field LIKE Apr 17, 2015 · If values from select techfund_debitor_enabled from impl_shop where shop_id='4987bc1b-c0a8-6cb7-12f4-0243011f7099' is "YES" then I need to pass 2 values to in clause, if not single value Thanks in advance Mar 10, 2016 · Functions destroy performance. So then you might think you could do: Aug 20, 2024 · Example 5: Using a Simple CASE Statement. Oracle case statement basic syntax. when (l_eno is null and l_ename is null) then. alter session set NLS_COMP=ANSI; alter session set NLS_SORT=BINARY_CI; Following on from my earlier question here Case statement for Order By clause with Desc/Asc sort I have a statement like this: SELECT * FROM TableName WHERE ORDER BY CASE @OrderByColumn WHEN 1 THEN Forename END DESC, CASE @OrderByColumn WHEN 2 THEN Surname END ASC Sep 18, 2012 · 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. Evaluates a list of conditions and returns one of multiple possible result expressions. com. ) Sep 30, 2016 · I'm interesting that how can I use if-then-else statement or any control structure in where clause in Oracle. select student_id, exam_id, percent_correct, case -- top line checked first; no-one will get grades A-D!. Case your column and your string identically. Oct 20, 2016 · It is not an assignment but a relational operator. Suppose all employees are going on a field trip. So the first value val1 is 'magic', this could have been a column as well. 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 ELSE -1 END) = 0; Jul 6, 2015 · I have a codition in which i need to use multiple parameters in where clause using Conditional operator. 2. I am using SQL Developer and Oracle version 11. Searched CASE Statement. As mentioned, there are also simple CASE statements, which compare an expression to a set of simple expressions. clientId=100 and B. The CASE expression was first added to SQL in Oracle 8i. When I see an in with two columns, I can imagine it to mean two things: The value of column a and column b appear in the other table independently; The values of column a and column b appear in the other table together on the same row Jan 16, 2019 · I actually have multiple CASE WHEN statements but yeah using Number as a filter condition also works and simple. Second problem is that you are trying output a boolean value from your CASE. sample data. flag) is in case there isn't a unique constraint on the combination of contactid and flag -- if there's no chance of duplicates you can omit the DISTINCT from the query: Aug 27, 2015 · [ELSE statement_list] END CASE Or: CASE WHEN search_condition THEN statement_list [WHEN search_condition THEN statement_list] [ELSE statement_list] END CASE For the first syntax, case_value is an expression. employeeid AND employeerole. However, my CASE expression needs to check if a field IS NULL. Case statement in Oracle with one condition returning the actual column. Best way to learn is to play with your query and test over and over again Oct 24, 2016 · The same WHERE clause can be expressed more simply, but regardless of reformulation, it will refer to both columns. I know that l_status stores only 1 value. Jun 16, 2017 · Here is a correct way to use CASE in the WHERE clause. . The use of COUNT(DISTINCT t. column1='1' then @B_VALUE when A. This value is compared to the when_value expression in each WHEN clause until one of them is equal Feb 21, 2016 · WARNING ABOUT PROBLEM STATEMENT: IN WITH MULTIPLE COLUMNS DOES NOT EXIST, THINK CAREFULLY WHAT YOU WANT. = 1. 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. Mar 22, 2011 · There are 3 main ways to perform a case-insensitive search in Oracle without using full-text indexes. 2 and SQL Developer Version 17. If true, a. No, Oracle can't use boolean expressions as results from functions. What do I need to change to 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. ) Else (Select ProductID from Product) End as ProductID ) Aug 7, 2022 · THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. Please suggest. If you pass a nr of strings like you do, the value will always be the first. 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. But I want something like l_status = 'n','s' I am using this case statement in the where condition. Here’s what this looks like for two conditions: WHERE condition1 AND condition2 In our example, condition1 is dept = 'Finance' and condition2 is salary > 4000. ) Oct 20, 2017 · DECLARE @B_VALUE VARCHAR(100) = (select value from B where B. Sep 7, 2009 · Excellent. Aug 23, 2024 · 4. The second value val2 is a column. Mar 20, 2023 · You cannot return an expression from the THEN clause of a CASE expression; it needs to return a single scalar value. I assume that you want something like this: select A, B, (case when A = 'default' then 'dl_vint' when A = 'non default' then 'lw_vint' when A = 'Deliquent' then 'hg_vint' end) from Application Sep 8, 2016 · I have a table that has multiple rows with the following fields: PersonName SongName Status I want to use names selected from a multiple selection listbox, which I can retrieve the values, and then do a where clause so it shows the song names that the selected people can all play, therefore status is complete. insp_route_code IN ('NOTE', 'EWT2', 'EWT2 Dec 4, 2013 · For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. I want to use as: when pcustomer_id IS NULL then WHERE c. 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) Jul 22, 2017 · how can return multiple values for THEN in CASE. insp_route_code IN ('NOMN', 'EWM1', 'EWM2', 'SOMN') THEN 1 WHEN to_char(sysdate, 'DY') = 'TUE' and insp_route_feat. It allows In a [NOT] IN condition in a WHERE clause, if the right-hand side of the condition is a subquery, you cannot use LEVEL on the left-hand side of the condition. Aug 1, 2017 · I have a WHERE clause that I want to use a CASE expression in. Simple PL/SQL CASE statement. This SELECT statement would return all supplier_name and order_id values where there is a matching record in the suppliers and orders tables based on supplier_id , and where the supplier's state is California. clientId=100 and C. roleid = roledef. Jun 2, 2023 · You can’t reference the CASE statement like the example you gave, because it’s referring to a column alias, which can’t be done inside a WHERE clause. This example below assumes you want to de-normalize a table by including a lookup value (in this case storing a users name in the table). Value Match (Simple) CASE Expression; Searched CASE Expression; Value Match (Simple) CASE Statement; Searched CASE Statement; Related articles. VALUE' column from table 'iwh. See this FAQ for details. Id = '3'); SELECT (case when A. Apr 24, 2007 · I want to use the CASE construct after a WHERE clause to build an expression. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. The result of the case statement is either 1 or 0. These methods include using CASE, Boolean Operators, IF() or IIF(), and CHOOSE() or ELT(). SOME_TYPE NOT LIKE 'NOTHING%' END I know that my WHERE is clause is not correct. My goal when I found this question was to select multiple columns conditionally. The syntax of the Oracle IN operator that determines whether an expression matches a list of values is as The CASE statement has two types: simple CASE statement and searched CASE statement. Create Procedure( aSRCHLOGI Feb 6, 2012 · Oracle SQL Case Statement in Where Clause. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. e. Sep 12, 2018 · The Case statement in SQL is mostly used in a case with equality expressions. In you first version you have. For example, we want records from the [SalesOrderHeader] table where the orderdate is between specified dates. 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. 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; Dec 4, 2013 · Hi All,I want to use the CASE statement in the WHERE clause to build the condition for a column with different values, I tried as below but getting the error as 'PL 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 In MSSQL 2008 or later you can use the "values" virtual table constructor Oracle create table using with clause Subtracting from multiple CASE statements. EmployeeName, Employee. Based on my condition,(for eg. Dec 30, 2008 · Oracle implemented this multi-value comparison IN list with a limit of < 100,000 rather than the 1,000 in the normal IN list. Top-to-bottom evaluation. It’s useful when conditions depend on the outcome of previous conditions: Hierarchical Conditions: Conditions based on the result of prior conditions. Let’s use a simple CASE statement for this example. To be honest, I can't recall if I found it in the docs or what. Thanks for accepting this as the answer but Tony Andrews solution is a lot more straightforward and, in my view, the better answer. Oracle with CASE Statement in WHERE clause. Kindly guide me how can i return multiple parameters from case clause. * from table ) select userid , case when IsNameInList1=1 then 'Apple' when IsNameInList2=1 then 'Pear' end as snack , case when IsNameInList1=1 then 'Milk' when 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. For example, the following statement is not valid: Jul 17, 2016 · SELECT * FROM user_table JOIN (SELECT column_value filter FROM table(sys. if seems like you just want to format the date. IsFrozen FROM employee, employeerole, roledef WHERE employee. Oracle Case in WHERE Clause with multiple conditions. 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 Oct 17, 2024 · The Simple CASE statement then checks the value of day_number and assigns the corresponding day name to the variable day_name. select * from cardimport where STATUS = CASE WHEN STATUS = '' THEN 'F' ELSE STATUS END Mar 3, 2021 · 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. Mar 6, 2019 · Before I start to integrate the nested select code in filter, I cannot get the multiple where field not like X or field1 not like Y working. My string masks are stored in a configuration table. Apr 22, 2015 · The top query uses a "pairwise comparison subquery" (source: 2007 Oracle SQL class slides). SELECT 'X' Operation, --Another CASE here if needed ,* FROM TableA WHERE Number like '20%'; Introduction to Oracle IN operator. flag needs to equal the number of arguments in the IN clause. Combining these two statements in the following ways does not seem to work: 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. What are the practical insights into the real world that probability values provide? Oct 9, 2013 · I believe you can use a case statement in a where clause, here is how I do it: Select ProductID OrderNo, OrderType, OrderLineNo From Order_Detail Where ProductID in ( Select Case when (@Varibale1 != '') then (Select ProductID from Product P Where . Additionally, you have AND t. So the values in the IN list are the values in which val1 and val2 have to match. Any help would be great in knowing if this type of statement is possible. Nesting Multiple CASE WHEN Statements. A simple CASE statement evaluates a single expression and compares the result with some values. 3. Exactly what I needed to remove hard-coded values from my code. case. I'm afraid you can't return multiple columns from a single Scalar Subquery, no. Jun 1, 2020 · You have to use IN clause if you need to filter multiple values from same column. The output will be The day is: Monday; Output: Statement processed. May 8, 2014 · BETWEEN can be implemented differently in different databases sometimes it is including the border values and sometimes excluding, resulting in that 1 and 31 of january would end up NOTHING. 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. Oracle WHERE examples May 16, 2017 · Never forget that in Oracle SQL the '' literal (empty string) is the same as NULL, hence your predicate e. customer_id = pcustomer_id. The day is: Monday simple-case-statement 2. 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. For Automatic mode - all the paramete Aug 4, 2024 · In this article, we discussed various methods for implementing IF or IF-ELSE logic in an SQL WHERE clause. container_event_reference e' if some values are present with other fields of other table and if there is no any values though want to display other field's values of other table. end. Oct 20, 2016 · You can also go the other way and push both conditionals into the where part of the case statement. Here's more about Oracle Scalar Subqueries: Yes, boolean expreasion makes it easier but if you want case when statement in where clause then there is an option as follows: CASE WHEN to_char(sysdate, 'DY') = 'MON' and insp_route_feat. name LIKE filter The filter expressions must be distinct otherwise you get the same rows from user_table multiple times. 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. Nesting Multiple CASE WHEN statements allows for intricate conditional logic. Jul 26, 2020 · COALESCE will return the first NOT NULL value in the list of arguments. ---code. 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. The Oracle IN operator determines whether a value matches any values in a list or a subquery. The simple way to achieve this goal is to add a CASE expression to your SELECT statement. Moreover, we can use universal CASE statements to handle multiple different conditions with different outcomes. column1='2' then @C 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: Aug 3, 2010 · Is there a syntax something like: Case When A=1 Then B := 2 and C := 3 When A=2 Then B := 4 and C := 5 Else B := 6 and C := 7 End Case; where the then clause can have multiple assignments? CASE Expressions And Statements in Oracle. For Automatic mode - all the paramete Jun 26, 2023 · You can combine multiple conditions with a nested CASE statement in the WHERE clause. CONTAINER_EVENT_ID' Sep 22, 2015 · There is another workaround you can use to update using a join. Feb 10, 2017 · If we need to query a table based on some set of values for a given column, we can simply use the IN clause. COMPARE_TYPE WHEN 'A' THEN T1. Create Procedure( aSRCHLOGI Aug 19, 2011 · How to return multiple values using case statement in oracle. The first part of the code looking for duplicate ID is where I am stuck, I am trying to check if column ID from TABLE_RECORDS has duplicate values. Both types of CASE statements support an optional ELSE clause. May 7, 2017 · As you write an SQL query, you may need to get values from multiple columns and change values from one form to another. odcivarchar2list('dummy%', '123%', 'test%')) ) ON user_table. The old code had each one hard-coded. ColumnName != '' is equivalent to e. employeeid = employeerole. This Oracle WHERE clause example uses the WHERE clause to join multiple tables together in a single SELECT statement. 0. AND should be used to apply filter in different columns. All of the previous examples use searched CASE statements. If the @UserRole variable value = 'Analyst', then the SupervisorApprovedBy column value must be NULL. Besides the SELECT statement, you can use the WHERE clause in the DELETE or UPDATE statement to specify which rows to update or delete. An aggregate function like MAX() can't have a result returned because it hasn't even been applied to anything. In this article, we'll introduce you to the syntax, formats, and uses of the CASE expression. 1. Do not provide 5 in your condition, by default it will be omitted Mar 15, 2021 · Atually i want to display value of 'e. Meaning that it can only return one value. I want to use the CASE construct after a WHERE clause to build an expression. Moreover, your query would have never returned rows with department - "Accounts or Unknown" because of the filter Department="SALES" Jul 14, 2018 · Following oracle query complies and works fine: SELECT Employee. Technical questions should be asked in the appropriate category. I don't want to write a Dynamic SQL. name email bob [email protected] joey [email protected] desired output [email protected] UPDATE: Thank you all for your help. CASE s. ColumnName != null which always evaluates to NULL. Jan 4, 2018 · I am trying to check for duplicate values as one of several checks in a case when statement. That's also the reason, why you can't use aliases defined in the SELECT clause in a WHERE clause, but you can use aliases defined in FROM clause. You should test how you database does this. To filter data by multiple conditions in a WHERE clause, use the AND operator to connect the conditions. Mar 3, 2021 · 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' (l_eno is not null and l_ename is not null) then l_status = 'new' , 'sent' end from dual; I want to return l_status = 'new' , 'sent' i. CASE in a SELECT Statements. SupervisorApprovedBy = SupervisorApprovedBy. Oracle CASE expression syntax is similar to an IF-THEN-ELSE statement The CASE expression must return a value, and you are returning a string containing SQL (which is technically a value but of a wrong type). Description, Employee. However, you can specify LEVEL in a subquery of the FROM clause to achieve the same result. The function is available from Oracle 8i onwards. Any input is greatly appreciated. SOME_TYPE LIKE 'NOTHING%' ELSE T1. I need to search for some 30 possible values that may appear anywhere in the free-form text of the column. If this condition is satisfied, check for orders with a value 1 for column [OnlineOrderFlag]: Oct 25, 2016 · Multiple Case statements in SQL.

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