Sql case when exists multiple multiple columns oracle. postalcode from schemax.

Sql case when exists multiple multiple columns oracle. Asked: April 10, 2018 - 11:27 am UTC. NCT_ID CONDITION NCT00531284 Multiple MyelomaNCT00531284 Lung CancerNCT00531284 Oct 14, 2014 · If the intent is to select some columns and generate a single column list of the distinct values, then Dynamic SQL is needed to produce such a query. There is a scenario where A is null so i fetched 10 from the next row where z=1 and f='DEF'. [Description], p. Here is the sample query. char in ('B', 'C', 'D')); You might want to start using ANSI join syntax as well: 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. For example -- if a returned value is Mar 18, 2016 · To do this in one update, you would need to expand the where clause:. If you have DDL triggers or AUDIT, then they will get fired multiple times for case 1. Here is my code for the query: SELECT Url='', p. ID = :ID) THEN 1 WHEN EXISTS (SELECT 1 FROM C WHERE C. First_name = people. This means the flag columns are always populated, regardless of whether the value columns are. Ask Question Asked 15 years ago. By adding more columns in the GROUP BY clause, more detail and more specific subsets of the data is created in query results; therefore, gaining higher Dec 31, 2014 · UPDATE Multiple columns Using CASE in SQL Server 2008. Oracle SQL non How to retrieve the column name which has maximum value by comparing the values from multiple columns using 'Case' statements 0 Case statement in select oracle compare multiple columns Dec 3, 2009 · You will be able to store only one instance of NULLs however (no two sets of same columns will be allowed unless all columns are NULL) : SQL> CREATE TABLE t (id1 NUMBER, id2 NUMBER); Table created SQL> ALTER TABLE t ADD CONSTRAINT u_t UNIQUE (id1, id2); Table altered SQL> INSERT INTO t VALUES (1, NULL); 1 row inserted SQL> INSERT INTO t VALUES Dec 21, 2011 · Oracle B-Tree indexes don't have nulls, while bitmap indexes do. Jun 14, 2018 · Use a self join on B with NOT EXISTS. UPDATE some_table SET column_x = CASE WHEN x_specific_condition THEN new_value_for_x ELSE column_x END, column_y = CASE WHEN y_specific_condition THEN new_value_for_y ELSE column_y END, WHERE some_more_conditions AND (x_specific_condition OR y_specific_condition ); May 14, 2020 · If you want to update a column for a table it must first exist: ALTER TABLE F_STATE_MAPPING ADD MATCHING_FLAG int Then you can update it . To make this work, you'll need to repeat the CASE logic for each column that needs to implement it. STN ) t SET t. I will leave it for reference. UPDATE. That could be read as wanting a list of groups with any 'YES' value, rather than a column for each group. CompanyMaster WHERE AreaId= (CASE WHEN EXISTS (SELECT BusinessId FROM dbo. name AND s. Modified 6 years, 4 months ago. , my search string is mainstreet John Doe. PID SEQ Desc A 1 Have A 2 a nice A 3 day. So if I have one of the old tables. personid ( multiple rows for a single merge_test. A case expression returns a single value. ZN_CD=B. Each WHEN clause may contain a comparison condition and the right-hand side of the formula. You can add "WHEN NOT MATCHED THEN. contactid FROM YOUR_TABLE t WHERE flag IN ('Volunteer', 'Uploaded') GROUP BY t. 0. Jan 18, 2021 · You are not using EXISTS correctly. An expression returns a single value. 1. Otherwise, Oracle returns null. If you know that you're only interested in tables in the current user's schema, you should use the USER_TAB_COLUMNS view instead. The matter of vendor-ordering for the second+ vendors is not defined in the question. city FROM stuff s WHERE EXISTS ( SELECT 1 FROM stuff ss WHERE s. "' Instructions from dual UNION ALL 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. This is why I favour the syntax EXISTS (SELECT 1 all on one line, because effectively it is just extra syntax of the EXISTS not of the subquery. We can use case statements inside PL/SQL program. s_status = 'ACTIVE' and s. In an EXISTS, the selected column makes no difference, it is entirely ignored and does not even need a name. I'm joining two queries with multiple columns, I have 3 conditions for column DUE_DATE_STATUS I just don't know how to have 3 conditions in the Select Statments. C 1 Yes C 2 we can C 3 do C 4 this work! Output of the SQL should be - Sep 8, 2014 · Try the conditional update, Update with Case for conditions. itemnum and not exists( select 1 from b2 where b2. PL/SQL in Oracle is only applicable in stored procedures. It’s particularly useful when we need to categorize or transform data based on multiple conditions. Using case in PL/SQL. B 1 Nice Work. detailid gets updated and new row get inserted for Discussion: To filter data by multiple conditions in a WHERE clause, use the AND operator to connect the conditions. tag = 'Y' THEN 'Other String' ELSE CODES. Also, this is no way "clean" in case there are a lot of similar columns. Aug 24, 2001 · How to enforce conditional unique on multiple columns Hi, Tom,I have a table create table project (project_ID number primary key, teamid number, job varchar2(100), status number(1));status=1 means it is an active project, otherwise it is archived,I was told to enforce a unique rule: the job Dec 3, 2013 · You used the keyword CONTAINS in your sample queries and question. name,s. value -- -- omitted other columns -- else A. May 4, 2012 · UPDATE CASE WHEN EXISTS ( SELECT A. CONTAINS lets you search against columns that have been indexed with an Oracle*Text full-text index. If the column (ModifiedByUSer here) does exist then I want to return a 1 or a true; if it doesn't then I want to return a 0 or a false (or something similar that can be interpreted in C#). column1, D. Just use a JOIN! UPDATE people SET has_license='Y' FROM People INNER JOIN Drivers ON Drivers. SELECT s. 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 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 Oct 20, 2017 · SELECT COALESCE(B. 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'. where the PK is composite key. ORDER BY cannot be used to create an ordered view or to insert in a certain order. If records are in table A and not in table B they need to be added to table B. ID REF_EXISTS 1 1 2 0 3 1 Jan 22, 2014 · GROUPING - accepts a single column as a parameter and returns "1" if the column contains a null value generated as part of a subtotal by a ROLLUP or CUBE operation or "0" for any other value, including stored null values. ID FROM Table_A A WHERE A. 7. SELECT t1, t2, t3, FROM B2 UNION SELECT t1, t2, t3, FROM B2 Jun 17, 2009 · For instance, EXISTS equivalent of a multiple column IN predicate: (val1, val2) IN (SELECT val1, val1 FROM t_inner) is recognized as such by SQL Server's optimizer and an efficient Merge Join method is proposed for this, despite the fact that SQL Server does not support multiple-column IN predicates directly. customerfirstname, addrt. The syntax of the SQL CASE expression is: The values I'm searching for are all known, and while 8 'select from dual's is a bit longer than (11 or 12 or 24), it's still only mentioning the 8 values once, and the 20 columns once within the sql. first_name AND Drivers. select column_name, data_default from user_tab_cols where table_name = 'EXAM_RESULTS' 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. city = ss. p_code having count(s. It’s quite common if you’re writing complicated queries or doing any kind of ETL work. table_name = c. Nov 10, 2021 · But as you can see this will be inefficient as I have to basically duplicate the full case logic for each conditional columns. In script 1, you'd get three of the columns added. natadtid where namet. Mar 3, 2021 · select * from emp where report_status in ( select * from table( select case when to_char(sysdate,'SS') > 30 then sys. contactid HAVING COUNT(DISTINCT t. com_code = a. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). null allowed), but not if the columns can contain other charaters (such as 'M' for "maybe" or 'S' for "sometimes"). BusinessId = CompanyMaster. TYPE, CASE. Oracle ALTER TABLE ADD column examples May 29, 2014 · I have the following sample data in an Oracle table (tab1) and I am trying to convert rows to columns. Then the case statement is a lot less complex. @Orderby = 1 Then Date column should be ASC @Orderby = 2 Then Date column should be DESC; My question is: How can I get the date column to sort desc when I am passed a 2 for that parameter, and have the a string column sort asc in the same CASE ORDER BY statement? This is what I have now for the CASE ORDER BY Nov 18, 2013 · SELECT * FROM suppliers WHERE EXISTS (select * from orders where suppliers. For Automatic mode - all the paramete Oct 11, 2019 · Based on priority 'ABC' should come first but since the column values are null i should look for other column values in the next prioritized row of F and see if the values exist or not and then select the column value. itemnum and b2. 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. I would also like to avoid using SELECT CASE which may work in 3 columns but wondering if there exist better method that can work for any number of date Sep 2, 2022 · Group by USER_ID column and show on a single line all accessible groups for single user_id. 1. Aug 8, 2010 · If you are only interested in knowing that 1 record exists in your potential multiple return set, than you can exit your loop after it hits it for the first time Oct 22, 2019 · I trying to create a SQL query with a CASE WHEN EXISTS clause in SQL Server. That's just not how SQL works. If no valid undergraduate program exists, I then want to search for the "Graduate" Program (if one exists). Update column using case expression sql. 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. e. If you have multiple Results for an Institution, doing the INNER JOIN will return multiple rows for that institution. Oct 8, 2012 · Concatenate multiple results into one row When I query a database that includes a particular field (Condition), it returns multiple rows of Conditions associated with the same result from another column (NCT_ID). If, for example, DM_WSID already existed then the relevant statement would fail. Below version uses EXISTS: What does PL/SQL have to do with this? What you have shown is plain SQL. clientId=100 and B. There are several enhancements to case available in PL/SQL: case statements; Extended case controls (from 23ai) Case statements in PL/SQL. P 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. Then split them out afterwards. column1 end) FROM A LEFT JOIN B ON B. Jul 28, 2020 · If a row is found the NVL2() function will return 'Y' otherwise it returns 'N'. When working with update multiple columns SQL, it’s crucial to use the SET clause effectively for achieving the desired results. My issue is it is updating all the records instead of specified conditions. The exception is for rows which have no matches in LOCATION_LOOKUP for any location (ID=4000 in my demo). 3. major Aug 17, 2016 · SQL "Where exists" with multiple tables with aliases The problem with the above query is that all 4 tables have columns named id and id_dtm. AreaSubscription WHERE AreaSubscription. For multiple columns its best to use a CASE statement, however for two numeric columns i and j you can use simple math: min(i,j) = (i+j)/2 - abs(i-j)/2 . we can try to add columns which you want to mark duplicate in a subquery. MATCHING_FLAG = t. This should be valid AFAIK. Any recommendations? select foo, (case when exists (select x. All other columns have random values. If none of the WHEN THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. delete s from student s inner join schedule sch on s. Feb 3, 2016 · ORA-00933 : SQL command not properly ended Cause: The SQL statement ends with an inappropriate clause. major = sch. Each of them is in a separate table. city, addrt. ID = 'B1' ELSE Table_B B SET B. Sql case when exists in where, when null or empty then count 0, case with multiple columns, conditions or values, if else conditional logic, group by, order by IN (vs) EXISTS and NOT IN (vs) NOT EXISTS Hi Tom, Can you pls explain the diff between IN and EXISTS and NOT IN and NOT EXISTS. See the details. descr then display it, if not, then if there exists a match with case_char. Viewed 718k times 133 So I basically wanna Jul 1, 2014 · Essentially what I am trying to do is if there exists a match for case_char. Let’s take some examples of using EXISTS operator to see how it works. In addition, the EXISTS operator terminates the processing of the subquery once the subquery returns the first row. It comes in two types (Simple Case Statement and Searched Case Statement ), and the case statement has a limit of 255 expressions maximum. id, s. These columns are not foreign or primary @VincentMalgrat: you can use an IF in PL/SQL, but not in (Oracle's) SQL. column1, C. g. Jun 8, 2016 · Forget the whole function, you can just use a subquery. tbl_a index skip scan, 20090715_or. EDIT. AreaId FROM @Areas) One more solution is 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. Oct 25, 2009 · Oracle SQL, concatenate multiple columns + add text. s_type like 'H%' group by s. COURSE_ID = 4 then true else false end as is_scheduled if you try to show in the 1st way, which value will asign to which columns? Or you can write different cases: Aug 13, 2021 · Oracle Case Statement is similar to the IF-THEN-ELSE statement in PL/SQL but with the advantage of using it inside SQL without calling a procedure. select case when 1 in ( 1, 2, 3 ) then xmltype ( cursor ( select 'abc' as "name 1", 'xyz' as "name 2" from dual Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. Status = '0' WHERE A. For example: SELECT a1, a2, a3, If you query the ALL_TAB_COLUMNS data dictionary view, you'd want to include a predicate on the OWNER column in case the same table exists in multiple schemas. COURSE_SCHEDULED_ID is null and s. Last_name = people. Also: plain SQL only has case expressions, not case statements, and indeed everything in your post is case expressions. So, please make sure you make the necessary changes before running the script. foo from somedb x where x. id_doc, count (f. supplier_id); I understand that if the id from the supplier and orders table match, the subquery will return true and all the columns from the matching row in the suppliers' table will be outputted. For example, an ORDER BY clause may have been included in a CREATE VIEW or INSERT statement. ORDER BY CASE @OrderByColumn WHEN 1 THEN Forename END DESC, CASE @OrderByColumn WHEN 1 THEN Date END, CASE @OrderByColumn WHEN 1 THEN Location END, CASE @OrderByColumn WHEN 2 THEN Surname END ASC Actually, you don't specify a column to sort by, but an expression. prog and <some May 8, 2013 · I believe in your case, you want it the other way around. id_file) as attachments_count, case when sum (f. Aug 20, 2024 · The SQL CASE statement is a handy tool that allows us to add conditional logic to our queries. insert_date Feb 21, 2016 · IN WITH MULTIPLE COLUMNS DOES NOT EXIST, THINK CAREFULLY WHAT YOU WANT. Dec 15, 2014 · CASE is a function that can be used to define the value of a single row/column. The user has a single field to type in their search criteria. Cannot use GREATEST since NULLs exist. Here's more about Oracle Scalar Subqueries: Jan 31, 2019 · Basically I want to search through 3 different fields and identify the "Undergraduate" program first (if one exists). Dec 19, 2009 · Now I would like to add another column to the query that states if at least one row with that ID exists in the new table. p_code between p_from and p_to) Aug 7, 2022 · you can check multiple column situations in case when statements. You can use a CASE expression in any statement or clause that accepts a valid expression. 2, long before this question was asked) and fits the presented requirements perfectly: I would use EXISTS subquery with HAVING. When using GROUP BY x, y statement, it fetches rows for each unique pair of values of column x and y. NetPrice, [Status] = 0 FROM Product p (NOLOCK) Sep 10, 2008 · But still far from optimal. For example, the following SQL*Plus command updates the `name` and `email` columns of the `users` table for all users whose `id` is 1: For example, the following SQL*Plus command updates the `name` and `email` columns of the `users` table for all users whose `id` is 1: Jul 2, 2015 · The syntax below works in SQLServer but I believe it is a standard sql but as pointed out in comments this is non standard implementation and is not currently supported in Oracle. person_id), and merge statement will run every hour. Regards,Madhusudhana Rao. prog = t. See the following customers and orders tables in the sample database: Aug 30, 2016 · Here I created a table with a single column, column_name. NEWVALUE I think there must be a fastest way to determine whether or not a column exist in ORACLE. column1) -- (case A. Because I have read that EXISTS will work better thanIN and NOT EXISTS will work better than NOT IN (read this is Oracle server tunning). I'm afraid you can't return multiple columns from a single Scalar Subquery, no. It means that the two values have to exist in the same row. Nov 25, 2021 · The short answer is you can't. city GROUP BY ss. For ex: select count(*) from tablename a where asofdate='10-nov-2009' and a. create or replace force view v_documents_list ( id_doc, attachments_count, total_dimension, insert_date, id_state, state, id_institute, institute, hasjob ) as select d. So, once a condition is true, it will stop reading and return the result. Jan 1, 2016 · I have a rather large table (~100m) rows with the following columns: Table TempEvents: Timestamp - one entry per minute Reader ID - about 100 separate readers Temperature - Integer (-40 -> +40) Dec 12, 2011 · This is SQL. In script 2 you wouldn't. Id = '1' LEFT JOIN C ON C. STN=B. UPDATE ( SELECT A. (And there will be a CASE of some sort somewhere - NVL and COALESCE are CASE expressions with a different syntax. Is it possible to do this in Oracle SQL? I've tried this: Apr 20, 2017 · For queries that are looking for a certain date range, try reading here: Oracle date "Between" Query. Please understand that PL/SQL is not another name for "Oracle SQL". nametable namet join schemax. I'm optimizing a larger software system that makes multiple calls to this Query, I can not modify the source code ;( , only i can modify the query which is stored in an external file. Both tables contains many columns but there are 6 columns in both tables, that should contain the same values. detail_id gets updated if value of source. STN) THEN 1 ELSE 0 END AS NEWVALUE FROM F_STATE_MAPPING A LEFT JOIN TEMP_STN_STATE_MAPPING B ON A. Apr 23, 2024 · I want to search with multiple strings in all the columns, for e. select itemname from A, b where a. If all rows for a specific 'Utility' do have a 'todate', I want the value to be Mar 13, 2020 · in here merge_test. These work like regular simple CASE expressions - you have a single selector. That could be achieved with conditional aggregation (which only keeps 'YES' in this case), an unpivot, and then string aggregation: Mar 15, 2021 · 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 . value -- when '3' then D. Everything else is "just" SQL. Specification, CASE WHEN 1 = 1 or 1 = 1 THEN 1 ELSE 0 END as Qty, p. city HAVING COUNT(*) > 1 ) Nov 17, 2015 · Instead, you should just modify the current description in that table or add a column with the secondary description you need. What are the alternatives to it and why does sql server does not support such syntactic sugar? Which means C1 match to D1, C2 match to D2, Cn match to Dn. Jun 16, 2011 · If each case only allows one column, then you probably need two cases: select col1,col2, case when col3='E01089001' then (select 1 from dual) else (select 2 from dual) end, case when col3='E01089001' then (select 3 from dual) else (select 4 from dual) end from Table1 where col1='A0529'; 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. It would be better if i could select multiple columns in THEN / ELSE May 8, 2018 · The above code works for up to 6 members of the list - if you need more just follow the same logic adding more columns to the main sql. Mar 16, 2017 · Forgot to follow with my solution: I needed to join 2 tables and search across the columns. I have a table with 3 date columns (at least); Any of the date values can be NULL. the Table all_tab_columns has over a million of records. name = ss. Optimizing queries involving Multiple CASE WHEN statements is crucial for efficient database operations. SELECT CASE WHEN EXISTS (SELECT * FROM test WHERE b IS NULL) THEN 1 ELSE 0 END AS B, CASE WHEN EXISTS (SELECT * FROM test WHERE c IS NULL) THEN 1 ELSE 0 END AS C ; ----- Times in ms (2008R2): 1344 - 596 - 1 Times in ms (2012): 26 - 14 - 2 Nov 20, 2015 · i'm using the following query to create a view in oracle 11g (11. ix_d_23 index range scan, 20090715_or I'm having real trouble here with oracle sql queries, I'm new to this so thanks in advance. Here is the example of my query: SELECT ActivityID, Hours = (CASE WHEN ActivityTypeID <> 2 THEN FieldName = (Some Aggregate Sub Query), FieldName2 = (Some other aggregate sub query) WHEN ActivityTypeID = 2 THEN FieldName = (Some Aggregate Sub Query with diff result), FieldName2 = (Some Other Aggregate Sub Query with diff result Jun 16, 2012 · Query with 2 EXISTS subqueries. ID, table1. , SELECT * FROM Table1 WHERE (A,B,C) NOT IN ( SELECT /*+ HASH_AJ */ A,B,C FROM Table2 WHERE A IS NOT NULL AND B IS NOT NULL AND C IS NOT NULL ) Aug 7, 2013 · SELECT * FROM dbo. clientId=100 and C. I assume all table, column and schema names are already upper-case (since all catalog string values are upper-case), otherwise you will need case-insensitive comparisons. ( Client number is consist of branch, Number, Sub Number Currency Code ) We have one big transaction table around 1 million records, having many columns, and at many places client numbers are stored from account May 22, 2024 · Multiple row subquery returns one or more rows to the outer SQL statement. I need to return all these column of particular row. ID = 'B1' Where Table_A and Table_B has exactly same columns with different records. The columns will have to exist whether or not you intend to use them. course=sch. " clause to the above SQL in case you need to insert new records, if it does not exist. But this syntax does not exists. Oct 4, 2017 · Can we make case that return multiple columns. A small addendum: I have found that Oracle (11gR1 in my case) refuses to hash anti join when the NOT IN clause contains more than one column, e. If no graduate program exists, then I want to search for the "Doctoral" Program. 3. value and char_value. Use a NOT EXISTS anti-semi-join for even better performance. The longer answer is you can do things like: - Concatenate all the columns into one with a known separator. value -- when '2' then C. If, for example, xxx is nullable, here is how you need to modify the query further: Apr 10, 2018 · Thanks for the question, Eva. Oracle EXISTS examples. itemnum = b. Share Improve this answer Nov 18, 2016 · Mostly the same. For this example, let's suppose the following. You may use the IN, ANY, or ALL operator in outer query to handle a subquery that returns multiple rows. last_name In SQL Server I would just use aliases but I'm not familiar with the intricacies of SQLite syntax. In that case you'd have to use a CASE expression or Oracle's DECODE to check for Ys. Dec 16, 2012 · Actually there are a few issues here. If records are in table B and not in table A, the In case you want to add more than one column, you use the following syntax: ALTER TABLE table_name ADD ( column_name_1 data_type constraint, column_name_2 data_type constraint, ); Code language: SQL (Structured Query Language) (sql) In this syntax, you separate two columns by a comma. (CASE statements do exist - in PL/SQL!) I will edit your post to make these Dec 20, 2018 · I have done a few table joins and below is how my data looks. I have business requirement when I need to select row from table on the bases of PK. I guess you want something like this: select * from a_table a join (select s. I would also like to avoid using SELECT CASE which may work in 3 columns but wondering if there exist better method that can work for any number of date Mar 5, 2011 · I'm in a bit of a pickle: I've been asked to take in comments starting with a specific string from a database, and separate the result into separate columns. value with lookup_value. char then display it. They ****ed up and made the id of t1 a varchar, smh, and some of them had nulls so we needed to check for them lest our results were ****ed (this is why the selected answer wouldn't work for me). MATCHING_FLAG, CASE WHEN (A. DATE_RAISED FROM CASE WHERE CASE. REF_ID 1 1 1 3 then I'd like to get. CASE WHEN TABLE1. For example. In this article, we'll introduce you to the syntax, formats, and uses of the CASE expression. A reader, March 11, 2021 - 4:38 am UTC Jun 5, 2012 · Is there a method to use contain rather than equal in case statement? For example, I am checking a database table has an entry lactulose, Lasix (furosemide), oxazepam, propranolol, rabeprazole, Sep 9, 2019 · I am trying to achieve something like this in sql server 2012. Thank you. postalcode from schemax. Apr 3, 2012 · A LEFT OUTER JOIN will tend to perform better than a NOT EXISTS**, but in your case you want to do EXISTS and using a simple INNER JOIN doesn't exactly replicate the EXISTS behavior. The column name is barcode, currently I am doing the following. Sep 15, 2010 · Using "Oracle Text" CONTAINS syntax on multiple columns We have a DB where users are able to search for text, using Oracle Text (I guess it's Intermedia in 8. The simple way to achieve this goal is to add a CASE expression to your SELECT statement. dimension) is null then 0 else sum (f. 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 Feb 4, 2019 · Those columns have been created so far with a following SQL logic (in Edit Column Formula Field): CASE WHEN column_name = '1' THEN 'a' WHEN column_name = '2' THEN 'b' WHEN column_name = '3' THEN 'c' ELSE ‘def’ What I’ve find out is the code above returns correct value for only the first WHEN. Jun 28, 2023 · Using the SET Clause Effectively. column1, -- omitted other columns A. Aug 17, 2016 · I am working with NOT IN and comparing against multiple columns, I know that when there is a NULL value returned by the sub-select the entire set is evaluated to false but in this case when I have tow columns and only the second column is null I get the rows returned, for example: select 'true' from dual where (1,2) not in (SELECT null,2 FROM Jun 19, 2019 · I am trying to write a query which checks whether multiple tables have been populated, so I have to check multiple tables, in case that only one of them has 0 records then I have to return 'No' in output, otherwise if all of those tables have more than 0 (i. , are non-nullable. ix_c_1flag nested loops semi nested loops semi hash join semi table access full, 20090715_or. But is it possible to apply it to multiple columns? Sample data: Type weight height A 50 10 A 60 12 B 40 8 C 30 15 My intended output: Use: SELECT t. odcivarchar2list('New','Sent') end options from dual ) ) View virtual column CASE expression. select * from user_tables t join user_tab_columns c on t. SQL*Plus: You can also use SQL*Plus to update multiple columns. com_code,s. supplier_id = orders. Version: 11g. com_code and (p_from is null or s. Jun 1, 2020 · or use exists twice / multiple times: You have to use IN clause if you need to filter multiple values from same column. This is my output from PL/SQL Developer: Connected to Oracle9i Enterprise Edition Release 9. case when s. AND should be used to apply filter in Sep 28, 2012 · I thought I'd try a case-when with an exists, but Teradata (my dbms) does not like it. DATE_RAISED > '2019-01-01' Now let's say another table, EVENT, contains multiple events which may be associated with each case (linked via EVENT. ID 1 2 3 and the new table. table_name As you know the table name, you should be able to check whether certain column exists or not. I want to get in one line the number of rows, where table2. ix_b_1 index range scan, 20090715_or. Anyway, there are 3 columns that are indexed. prog, (case when t. Apr 1, 2011 · Here is the situation that I'm facing: I have two tables A and B. Oracle EXISTS with SELECT statement example. See sample output below. You should have a single test column, not multiple ones. BusinessId) THEN @AreaId ELSE AreaId END) AND AreaId IN (SELECT [@Areas]. mydb schema; table called foo; columns to select together her_name; his_name; other_name; Here is the Dynamic SQL to generate the same query Oct 25, 2019 · I need to create a CASE statement that will look at the multiple rows for a 'Utility' to determine the output. FLAG, count(1) row_count f Mar 10, 2010 · When using GROUP BY x statement, it fetches rows for each distinct value of column x. In this case the flag columns will be null. When all of the columns match it only will filter out the result. SQL CASE Statement Syntax. How Jun 25, 2020 · EXISTS and NOT EXISTS Operator in Oracle SQL, oracle not exists performance, oracle not exists example, not exists in oracle with multiple columns, oracle exists example, oracle check if row exists before insert, case when exists oracle, oracle exists vs in, oracle sql not in subquery,oracle exists vs in, not exists oracle sql, case when exists oracle, oracle check if record exists, oracle not Jul 15, 2009 · select statement sort unique union-all nested loops semi nested loops semi hash join semi table access full, 20090715_or. e 1,2,3 records) it should return 'YES'. other_desc END AS description Jun 18, 2011 · Update table with multiple columns from another table ? Hi Tom,Due to migration to new system we have to change all our account numbers. If at most one row can match a prog in your table: select p. Example of returned values: Oracle Database 23c extended CASE expressions in PL/SQL to support dangling predicates in simple CASE expression. May 22, 2013 · I'm using a SQL server statement embedded in some other C# code; and simply want to check if a column exists in my table. If you use ALL_TABLES / ALL_TAB_COLUMNS, include the OWNER value as well. i want to merge in such a way that value of merge_test. Last updated: November 25, 2021 - 3:22 pm UTC. - Load the values to an XML document and extract out as needed. The same WHERE clause can be expressed more simply, but regardless of reformulation, it will refer to both columns. Meaning that it can only return one value. 2. flag) = 2 Jun 11, 2021 · SQL queries support case expressions. Now, I want to create a select query (Oracle SQL), which searches all strings in all columns. because EXISTS checks for rows not columns. CASE_ID). Hence, I replaced it with the simpler 1. Aug 23, 2024 · 5. Tips for Optimizing Queries using Multiple CASE WHEN. bar > 0) then '1' else '0' end) as MyFlag from mydb The SQL CASE Expression. odcivarchar2list('Sent') else sys. Status = '0' WHERE B. ) Sep 28, 2021 · I have two tables with a column id and a flag. Feb 20, 2015 · Oracle DB 12c. name,ss. prog is null then 0 else 1 end) as it_exists from (select 1 as prog from dual union all select 2 as prog from dual union all select 3 as prog from dual union all select 4 as prog from dual union all select 5 as prog from dual ) p left join mytable t on p. Nov 22, 2016 · I have searched this site extensively but cannot find a solution. And in addition, there is an index bitmap conversion access path that is able to combine multiple indexes. I didn't necessarily need the case statement, so this is what I did. FILENAME in (case when 1 = 1 then (select distinct filen In contrast, the CASE WHEN statement is used across multiple SQL dialects, including PostgreSQL, MySQL, Oracle, and SQL Server, in SELECT, UPDATE, and DELETE statements to handle multiple conditions. com_code, s. For example, I am trying to upd Apr 22, 2015 · The top query uses a "pairwise comparison subquery" (source: 2007 Oracle SQL class slides). adtid = namet. Oracle, however, also has Full Index Scan and Fast Full Index Scan access paths that in some cases can answer a query solely from indexes, without hitting a table. customerfirstname in ('David', 'Moses', 'Robi'); May 8, 2019 · Let's take a simple query in Oracle: SELECT CASE. p_code, count(*) as Num_SIMRP from p_stest s where s. It could be that the vendors are all to be ordered in terms of their most recent incident, or it could be that they order by vendor name following the one with the latest incident. Aug 12, 2016 · I would recommend something like this. NAME = :NAME) THEN 1 END This takes advantage of the short-circuit evaluation behavior of case, which is described in the documentation: Aug 17, 2018 · Column names are stored in USER_TAB_COLUMNS; join it with USER_TABLES via TABLE_NAME column, e. I then need to concatenate all these columns into one. Cust_No Account_No Product_H_f Product_H_L 123 A9023 Core Training 123 A9023 Core Training 834 Oct 9, 2018 · SQL> -- Conditional unique index on multiple columns SQL> create unique index demo_fbi_idx 2 on demo_fbi 3 (case when active_flag = 'Y' then 4 col1 else null end, 5 case when active_flag = 'Y' then 6 col2 else null end); Index created. course and s. I am using case as there are two different scenario for making selection of row from table. I have a scenario where I have to run a report in automatic and manual mode. What I'm trying to do is use more than one CASE WHEN condition for the same column. ID = 'B1' ) THEN Table_A A SET A. We are trying to update the salary from Employee table based on their designation and total experience. I know how to use Oracle pivot on one column. Viewed 50K+ times! Jun 2, 2023 · As the data for columns can vary from row to row, using a CASE SQL expression can help make your data more readable and useful to the user or to the application. I want to select the greatest date out of the 3 columns. PID A B C Table B. It's great that the entire set of Mar 22, 2012 · This is expected to return rows that exist in Main_Table but do not have matching rows in Some_Table, assuming the columns xxx, etc. Aug 15, 2014 · I have two tables A and B which can be join. As a result, the CASE WHEN is more versatile for in-query conditional logic, whereas IF is used for procedural control in stored procedures Dec 6, 2023 · I need to check if a nvarchar value exists in a table. ID, CASE. id = some condition; With this request: select table1. The CASE expression evaluates a list of conditions and returns one of the multiple possible results. My goal when I found this question was to select multiple columns conditionally. You can't use it to add or remove columns from your resultset. ArtNo, p. SELECT COUNT(*)INTO v_tmpBarcodeCount FROM CONTAINER WHERE BARCODE = TO_CHAR(v_iTemp); IF v_tmpBarcodeCount = 0 THEN Mar 17, 2018 · This query still works for three-state booleans (i. It doesn't look like that is a very well defined table structure. I test the existence of column_name in the table EMP in the SCOTT schema. 0 Connected as obr SQL> SQL> drop table t1; Table dropped SQL> drop table t2; Table dropped SQL> drop table t3; Table dropped SQL> create table t1 ( id int primary key, varchar2_col varchar2(80) ); Table created SQL> create table t2 ( id int If it is oracle, As an alternative, you can write this as pl/sql block as follows: declare v_query varchar2(4000); begin if to_char(sysdate,'dd-mm-yyyy') >= '01-04-2022' then -- select one set of columns v_query := 'SELECT person_number, current_bonus one_year_bonus, current_ltip one_year_ltp, current_salary one_year_salary, one_year_bonus second_year_bonus, one_year_ltp second_year_ltp, one Would it be possible to construct SQL to concatenate column values from multiple rows? The following is an example: Table A. OR not exist at all. addresstable addrt on addrt. Id = '2' LEFT JOIN D ON D Dec 7, 2023 · There are a few differences between case in PL/SQL and Oracle SQL. 0). The SET clause helps in updating more than one column at a time, making it an efficient tool for database management. Here’s what this looks like for two conditions: WHERE condition1 AND condition2 May 27, 2016 · I am using oracle database and have a situations to update fields from some other tables. Jun 29, 2011 · Oracle SQL: There is the "IN" Operator in Oracle SQL which can be used for that: select namet. ZN_CD AND A. SQL update rows in column using CASE statement. Consider the following tips: Indexing: Utilize indexes on columns involved in conditions. 7). for example. In PL/SQL you can write a case statement to run one or more actions. detail_id will be null initially and can get multiple values for a persons. I have 6 columns I'm trying to work with. For what you have though, you are on the right track. dimension) end as total_dimension, d. Nov 12, 2009 · I want to return multiple values from a query in oracle. Script 1 will commit multiple times and MAY wait for an exclusive table lock several Oct 24, 2016 · Here emp is a table, and bonus and salary are two of the columns in that table. You could use a case expression: SELECT * FROM A WHERE 1 = CASE WHEN EXISTS (SELECT 1 FROM B WHERE B. This formula can be used to get the minimum value of multiple columns but its really messy past 2, min(i,j,k) would be min(i,min(j,k)) With FurtherInstructionsQ as ( select 1 seq, 'Default output: 1st Match of addrCol-Fltr addrCol1 against all fltrs, then addrCol2 against all fltrs, etc' as output, '(i) In last line of sql statement #6, use MR1stMatchPerClientQ1, (ii) verify that client #9 is matched to column #1 FLAT with filter #4 "P. Also, if the case logic is complex, it will be inefficient even further. column1 -- when '1' then B. p_code) > 0) b on b. ix_d_13 index range scan, 20090715_or. EXISTS is standard SQL, has been around forever (at least since PostgreSQL 7. . fswmy msdk srqbxql hpah qbbkbte jiqhw zpulaz pwbnee gqrjw kwre