Inheritance c.cities ??
Looking at the Postgresql manual in the inheritance section I see
abbreviations.
i.e.
SELECT c.name, c.altitude
FROM cities* c
WHERE c.altitude > 500;
c.name of course refering to cities.name
My question is where is there an alias reference of c AS cities
How does and where does the cities become c. How does Postgresql
recognize the change.
bob T
R Talbot wrote:
Looking at the Postgresql manual in the inheritance section I see
abbreviations.i.e.
SELECT c.name, c.altitude
FROM cities* c
WHERE c.altitude > 500;c.name of course refering to cities.name
My question is where is there an alias reference of c AS citiesHow does and where does the cities become c. How does Postgresql
recognize the change.
Here:
FROM cities* c
This is equivalent to "FROM cities* AS c".
In the current release, "cities" is equivalent to "cities*"; to get rows
from cities alone you need to use "FROM ONLY cities"
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Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight http://www.lfix.co.uk/oliver
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R Talbot wrote:
R Talbot wrote:
Looking at the Postgresql manual in the inheritance section I see
abbreviations.i.e.
SELECT c.name, c.altitude
FROM cities* c
WHERE c.altitude > 500;c.name of course refering to cities.name
My question is where is there an alias reference of c AS citiesHow does and where does the cities become c. How does Postgresql
recognize the change.bob T
Thank You
I answered my question..
Bob T
Thank You
I answered my own question...
Bob T
R Talbot wrote:
Looking at the Postgresql manual in the inheritance section I see
abbreviations.i.e.
SELECT c.name, c.altitude
FROM cities* c
WHERE c.altitude > 500;c.name of course refering to cities.name
My question is where is there an alias reference of c AS citiesHow does and where does the cities become c. How does Postgresql
recognize the change.
FROM cities* c is the same as
FROM cities* AS c
I personally would prefer it if everyone used the AS when it is implied
as, IMHO, it makes such statements much clearer.
bob T
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