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Diffstat (limited to 'src/bin/pgaccess/lib/help/inheritance.hlp')
| -rw-r--r-- | src/bin/pgaccess/lib/help/inheritance.hlp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/bin/pgaccess/lib/help/inheritance.hlp b/src/bin/pgaccess/lib/help/inheritance.hlp index 15e15cd744f..b402c30fdf5 100644 --- a/src/bin/pgaccess/lib/help/inheritance.hlp +++ b/src/bin/pgaccess/lib/help/inheritance.hlp @@ -11,7 +11,7 @@ Let's create two classes. The capitals class contains state capitals which are a CREATE TABLE capitals ( state char2 - ) UNDER cities; + ) INHERITS (cities); " {code} " In this case, an instance of capitals inherits all attributes (name, population, and altitude) from its parent, cities. The type of the attribute name is text, a native Postgres type for variable length ASCII strings. The type of the attribute population is float, a native Postgres type for double precision floating point numbers. State capitals have an extra attribute, state, that shows their state. In Postgres, a class can inherit from zero or more other classes, and a query can reference either all instances of a class or all instances of a class plus all of its descendants. |