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2. sql - What is the difference between "INNER JOIN" and "OUTER JOIN...

   stackoverflow.com/questions/38549

   Inner join - An inner join using either of the equivalent queries gives the intersection of the two tables, i.e. the two rows they have in common. Left outer join - A left outer join will give all rows in A, plus any common rows in B. Full outer join - A full outer join will give you the union of A and B, i.e.

3. LEFT JOIN vs. LEFT OUTER JOIN in SQL Server - Stack Overflow

   stackoverflow.com/questions/406294

   There are mainly three types of JOIN. Inner: fetches data, that are present in both tables. Only JOIN means INNER JOIN. Outer: are of three types. LEFT OUTER - - fetches data present only in left table & matching condition. RIGHT OUTER - - fetches data present only in right table & matching condition.

4. sql - Qual é a diferença entre INNER JOIN e OUTER JOIN? - Stack...

   pt.stackoverflow.com/questions/6441

   Inner join faz uma junção entre duas tabelas A e B onde a projeção serão todos os elementos de A que estão em B. Ex.: Quero todos os clientes de um banco e suas determinadas agencias: select * from Clientes inner join Agencias on Cliente.idAgencia = Agencias.idAgencia. Um outer join pode ser Left, Rigth e Center (ou Cross).

5. sql - Oracle "(+)" Operator - Stack Overflow

   stackoverflow.com/questions/4020786

   The (+) operator indicates an outer join. This means that Oracle will still return records from the other side of the join even when there is no match. For example if a and b are emp and dept and you can have employees unassigned to a department then the following statement will return details of all employees whether or not they've been ...

6. sql - How do I find records that are not joined? - Stack Overflow

   stackoverflow.com/questions/151099

   The first approach is. select a.* from a where a.id not in (select b.ida from b) the second approach is. select a.*. from a left outer join b on a.id = b.ida. where b.ida is null. The first approach is very expensive. The second approach is better. With PostgreSql 9.4, I did the "explain query" function and the first query as a cost of cost=0 ...

7. MySQL: FULL OUTER JOIN - How do I merge one column?

   stackoverflow.com/questions/4415109

   For what I think you are trying to do, I would suggest using a FULL OUTER JOIN instead: SELECT ISNULL(t1.id, t2.id) AS id, t1.value1, t2.value2. FROM table1 t1. FULL OUTER JOIN table2 t2 ON t1.id = t2.id. answered Dec 11, 2010 at 4:25.

8. SQL - Two Outer Joins - Stack Overflow

   stackoverflow.com/questions/1225180

   You can stack as many outer joins as you want, the key is to put all of the where qualifiers on the outer join line so that you don't lose all of the nulls. See below where all of the qualifiers for agldimension are included on the same line, NOT in the where statement. select distinct. act.account,

9. Replace Default Null Values Returned From Left Outer Join

   stackoverflow.com/questions/1664266

   For Oracle you can use: NVL(columnName,deafultValue) :- NVL is used to convert a null value to a default value in the query output. eg. If you want to replace null values with 'NA' then use something like this. SELECT NVL(columnName,'NA') FROM tableName. answered May 19, 2021 at 16:16.

10. .net - LINQ to SQL Left Outer Join - Stack Overflow

    stackoverflow.com/questions/700523

    In LINQ to SQL if your DB is properly built and your tables are related through foreign key constraints, then you do not need to do a join at all. Using LINQPad I created the following LINQ query: //Querying from both the CustomerInfo table and OrderInfo table from cust in CustomerInfo where cust.CustomerID == 123456 select new {cust, cust ...

11. sql - Left Outer Join using + sign in Oracle 11g - Stack Overflow

    stackoverflow.com/questions/6559261

    In Oracle, (+) denotes the "optional" table in the JOIN. So in your first query, it's a P LEFT OUTER JOIN S. In your second query, it's S RIGHT OUTER JOIN P. They're functionally equivalent. In the terminology, RIGHT or LEFT specify which side of the join always has a record, and the other side might be null.