SQL query where clause to return rows does not exist
if not exists in sql
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how to select all records from one table that do not exist in another table
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sql not exists vs not in
select rows which are not present in other table
I am running a query aganist a table to find what values are missing, see sample below. I want a query that returns matching rows along with unmatched ones..
select first, last, id from sometable where id not in (1234, 5678, 918, 123, 345, 567, 789, 901, 111, 222, 333, 444) +----------+---------+---------+ | Returned | | | +----------+---------+---------+ | FIRST | LAST | ID | | Fir | Las | 123 | | Sand | Mud | 222 | | Stud | Wood | 345 | | Nail | Metal | 444 | | Fiber | Glass | 567 | | Max | Money | 789 | | Less | Piece | 5678 | +----------+---------+---------+ +----------+-------+------+ | Expected | | | +----------+-------+------+ | FIRST | LAST | ID | | Fir | Las | 123 | | Sand | Mud | 222 | | Stud | Wood | 345 | | Nail | Metal | 444 | | Fiber | Glass | 567 | | Max | Money | 789 | | Less | Piece | 5678 | | | | 1234 | | | | 918 | | | | 901 | | | | 111 | | | | 333 | +----------+-------+------+
If i understand u corectly this might work but add the conditions u want and u dont want
Select id, first,last from sometable Where id in ('123','222','345') Union Select null, null, last from sometable Where id in ('345','444')
oracle, I am running a query aganist a table to find what values are missing, see sample below. I want a query that returns matching rows along with If this returns zero rows (because we've said NOT EXISTS), then it will run the next query, which will be: SELECT PNUMBER FROM PROJECT Again, this has to return zero rows, and if it does, then it will run the final query, which is the first one.
You would need something like this
select t.id,s.first,s.last from (SELECT regexp_substr(txt, '[^,]+', 1, LEVEL) id FROM (SELECT '1234, 5678, 918, 123, 345, 567, 789, 901, 111, 222, 333, 444' AS txt -- Put your in clause above without new line. FROM dual ) CONNECT BY regexp_substr(txt, '[^,]+', 1, LEVEL) IS NOT NULL ) t left join sometable s on t.id=s.id
+------+--------+--------+ | ID | FIRST | LAST | +------+--------+--------+ | 123 | Fir | Las | | 222 | Sand | Mud | | 345 | Stud | Wood | | 444 | Nail | Metal | | 567 | Fiber | Glass | | 789 | Max | Money | | 5678 | Less | Piece | | 111 | (null) | (null) | | 1234 | (null) | (null) | | 918 | (null) | (null) | | 901 | (null) | (null) | | 333 | (null) | (null) | +------+--------+--------+
Consider using [NOT] EXISTS instead of [NOT] IN with a subquery , Phil Factor explains why you should prefer use of [NOT] EXISTS over [NOT] IN, returned any rows, then when evaluating WHERE [NOT] EXISTS a NOT EXISTS operator instead of NOT IN, or recast the statement as a left outer join. In short, the SQL Server optimizer treats either query in the same way, Next, the NOT EXISTS subquery runs. This subquery gets a list of customers that were created prior to 60 days ago. Since the second subquery uses the NOT EXISTS statement, the main query does a match with the NOT EXISTS subquery against the customer database, and filters out records where they exist in the subquery.
You probably won't able to do that since you only will receive one column data instead of the whole result set.
Check if your table columns allow null and if they do, you can add the exception values(1234, 5678, 918, 123, 345, 567, 789, 901, 111, 222, 333, 444) with a simple insert at the end of your query.
EXISTS (Transact-SQL), in departments which have names that start with P . It does not matter if the row is NULL or not. In the following example, the subquery returns NULL but the EXISTS operator still evaluates to true: SELECT employee_id, first_name, last_name FROM employees WHERE EXISTS ( SELECT NULL) ORDER BY first_name , last_name; The query returns all rows in the employees table.
Another option: Put the ids you're interested in into a temp table, and do an outer join:
(Sqlite syntax; adjust as needed for Oracle)
CREATE TABLE sometable(id INTEGER PRIMARY KEY, first TEXT, last TEXT); -- Populate sometable CREATE TEMPORARY TABLE temptable(id INTEGER PRIMARY KEY); INSERT INTO temptable VALUES (1234), (5678), (918), (123), (345), (567), (789), (901), (111), (222), (333), (444); SELECT first, last, t.id AS id FROM temptable AS t LEFT OUTER JOIN sometable AS s ON s.id = t.id;
first last id ---------- ---------- ---------- 111 Fir Las 123 Sand Mud 222 333 Stud Wood 345 Nail Metal 444 Fiber Glass 567 Max Money 789 901 918 1234 Less Piece 5678
Edit: You could probably use a CTE to hold the values instead of a temporary table if so desired, too.
SQL NOT EXISTS Operator, (SELECT * FROM Addresses WHERE Addresses. userId = Users. EXISTS and NOT EXISTS are used with a subquery in WHERE clause to examine if the result the subquery returns is TRUE or FALSE. The true or false value is then used to restrict the rows from outer query select.
use of NOT EXIST in SQL statement, How do you execute a SQL query only if another SQL query has no results? The SQL NOT EXISTS Operator will act quite opposite to EXISTS Operator. It is used to restrict the number of rows returned by the SELECT Statement . The NOT EXISTS in SQL Server will check the Subquery for rows existence, and if there are no rows then it will return TRUE, otherwise FALSE.
How to Execute a SQL Query Only If Another SQL Query Has No , The WHERE clause returns all records where the EXISTS clause is TRUE. The EXIST SalesOrderHeader WHERE NOT EXISTS (SELECT 1 FROM sales. The query was syntactically correct and ran without any errors, but it did not return any results. There were some records which we were hoping to get in the results, so we investigated the reason why the correct query did not return any. The NOT IN clause returns rows from the outer table which do not exist in the inner table used in the
Subquery in the WHERE Clause, Since it's a predicate, not a JOIN condition, the rows from t_left can only be returned at most once too. EXISTS always returns TRUE or FALSE For example, in cases where the query had to perform a certain task, but only if the subquery returned any rows, then when evaluating WHERE [NOT] EXISTS (subquery), the database engine could quit searching as soon as it had found just one row,
- Huh? Isn't that just returning all rows in the table? Not clear.
- If you want all rows and non-matching rows, and all this data is in the same table, just do a
select * from table
- I think by ` not in` you mean
in. So you need to get all records from the
inclause. If matched then the values, else null. Is that it?
- @OldProgrammer not every single row in a table. What ever in the where clause.
- @RyanWilson Thanks for select *
- That requires he know which ids are present or not beforehand.
- Well the he replace the second union with not in for theid he knows @shawn