Top "Inner-join" questions

A database operation that combines the values of 2 tables based on a condition, or relationship, that exists between those tables.

How to join records from multiple object tables to a master table with a single query?

So I have a data model which is set up with a table that contains NAME, ID, and CONDITION columns …

sql jasper-reports inner-join multiple-tables
How do you combine an inner and outer join in mysql

I can do it in sybase and I can do it in oracle, but I'm not seeing how to do …

mysql inner-join outer-join
postgresql slow query (dblink and inner join)

I have this query containing a dblink since I need to connect to another database and it seems so slow (50.343 …

database performance postgresql inner-join dblink
Inner Joins with Derived Tables

I have a question about the basic syntax of joining with derived tables. Is this teh basic syntax that is …

sql inner-join derived-table
Cannot select entity through identification variables without choosing at least one root entity alias

Ads entity is described by geographic information: Country> Region>County. The Ads entity is only linked with County. …

symfony join doctrine-orm inner-join dql
Select all rows containing duplicate values in one of two columns from within distinct groups of related records

I'm trying to create a MySQL query that will return all individual rows (not grouped) containing duplicate values from within …

mysql group-by duplicates inner-join having
Django ForeignKey with null=True, inner join, and left outer join

Let's say I have two Django models Person and Company as follows: - class Company(models.Model): name = models.CharField() …

django left-join inner-join
Query error with 2 ambiguous column names in SQL

I've been working with this Query for bit now and I'm having a hard time. I'm new to SQL and …

sql sql-server inner-join ambiguous ambiguous-call
ORA-00904 INVALID IDENTIFIER with Inner Join

I'm trying to do an inner join between 3 tables in an ERD I created. I've successfully built 3 - 3 layer sub-queries …

sql oracle10g inner-join ora-00904
Why is mySQL query, left join 'considerably' faster than my inner join

I've researched this, but I still cannot explain why: SELECT cl.`cl_boolean`, l.`l_name` FROM `card_legality` cl …

mysql database left-join inner-join