Self-join example review in Books Online
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 yesterday
ElGrigElGrig
62514
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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?
source link
sql-server t-sql self-join
asked yesterday
ElGrigElGrig
62514
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday
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 yesterday
ElGrigElGrig
62514
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 yesterday
ElGrigElGrig
62514
asked yesterday
ElGrigElGrig
62514
asked yesterday
ElGrigElGrig
62514
asked yesterday
ElGrigElGrig
62514
asked yesterday
ElGrigElGrig
62514
62514
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday
add a comment |
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday
1
1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday
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 yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
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 yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
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 yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
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 yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
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 yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
edited yesterday
answered yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
answered yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
answered yesterday
ypercubeᵀᴹypercubeᵀᴹ
76.8k11132214
76.8k11132214
add a comment |
add a comment |
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1
Are SalesPerson and SalesTerritory tables or views of the same table?
– McNets
yesterday
It's not mentioned in the example, but I just checked in AdventureWorks database and they are different tables @McNets
– ElGrig
yesterday
I also think so @ypercubeᵀᴹ
– ElGrig
yesterday