Self-join example review in Books Online
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Here in this example it states that performs a self-join, but it joins Sales.SalesPerson to Sales.SalesTerritory. I knew that self join means joining the same table to itself but here aren't Sales.SalesPerson and Sales.SalesTerritory different tables? So is this considered self join though the tables are different? or is there a mistake?
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sql-server t-sql self-join
asked Feb 20 at 16:48
ElGrigElGrig
67815
add a comment |
Here in this example it states that performs a self-join, but it joins Sales.SalesPerson to Sales.SalesTerritory. I knew that self join means joining the same table to itself but here aren't Sales.SalesPerson and Sales.SalesTerritory different tables? So is this considered self join though the tables are different? or is there a mistake?
source link
sql-server t-sql self-join
asked Feb 20 at 16:48
ElGrigElGrig
67815
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59
add a comment |
Here in this example it states that performs a self-join, but it joins Sales.SalesPerson to Sales.SalesTerritory. I knew that self join means joining the same table to itself but here aren't Sales.SalesPerson and Sales.SalesTerritory different tables? So is this considered self join though the tables are different? or is there a mistake?
source link
sql-server t-sql self-join
asked Feb 20 at 16:48
ElGrigElGrig
67815
Here in this example it states that performs a self-join, but it joins Sales.SalesPerson to Sales.SalesTerritory. I knew that self join means joining the same table to itself but here aren't Sales.SalesPerson and Sales.SalesTerritory different tables? So is this considered self join though the tables are different? or is there a mistake?
source link
sql-server t-sql self-join
sql-server t-sql self-join
asked Feb 20 at 16:48
ElGrigElGrig
67815
asked Feb 20 at 16:48
ElGrigElGrig
67815
asked Feb 20 at 16:48
ElGrigElGrig
67815
asked Feb 20 at 16:48
ElGrigElGrig
67815
asked Feb 20 at 16:48
ElGrigElGrig
67815
67815
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59
add a comment |
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59
1
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59
add a comment |
1 Answer
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Looks like you are right in all observations and it is a mistake.
They are two separate tables (not views) and a self-join means a table joined to itself (and even a view or derived table or CTE joined to itself). You might even consider a join between a table and a view derived from that table to be a self-join but it is not the case here either.
I suggest you submit a bug report.
Link: list of AdventureWorks tables.
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
add a comment |
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Looks like you are right in all observations and it is a mistake.
They are two separate tables (not views) and a self-join means a table joined to itself (and even a view or derived table or CTE joined to itself). You might even consider a join between a table and a view derived from that table to be a self-join but it is not the case here either.
I suggest you submit a bug report.
Link: list of AdventureWorks tables.
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
add a comment |
Looks like you are right in all observations and it is a mistake.
They are two separate tables (not views) and a self-join means a table joined to itself (and even a view or derived table or CTE joined to itself). You might even consider a join between a table and a view derived from that table to be a self-join but it is not the case here either.
I suggest you submit a bug report.
Link: list of AdventureWorks tables.
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
add a comment |
Looks like you are right in all observations and it is a mistake.
They are two separate tables (not views) and a self-join means a table joined to itself (and even a view or derived table or CTE joined to itself). You might even consider a join between a table and a view derived from that table to be a self-join but it is not the case here either.
I suggest you submit a bug report.
Link: list of AdventureWorks tables.
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
Looks like you are right in all observations and it is a mistake.
They are two separate tables (not views) and a self-join means a table joined to itself (and even a view or derived table or CTE joined to itself). You might even consider a join between a table and a view derived from that table to be a self-join but it is not the case here either.
I suggest you submit a bug report.
Link: list of AdventureWorks tables.
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
edited Feb 20 at 17:17
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
answered Feb 20 at 17:15
ypercubeᵀᴹypercubeᵀᴹ
77.6k11135217
77.6k11135217
add a comment |
add a comment |
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1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
Feb 20 at 16:52
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
Feb 20 at 16:55
I also think so @ypercubeᵀᴹ
– ElGrig
Feb 20 at 16:59