[EMAIL PROTECTED] wrote:
Does hstore nest? My impression is that it doesn't. Which might well not
matter, of course.
If what you mean is to have "mappings of mappings" then no.
Hstore implements a data type for a (finite) mapping (a set of key -> value
pairs, think "hash" for perl folks), with operations like "H1 contains
H2" (in the sense that all key-value pairs in H2 are also in H1)
supported by an index. Keys and values are strings.
As a perl folk I think of hashes as nestable :-). Unlike hstore, the
keys are strings but the values can be anything, including a hashref or
arrayref.
Anyway, this means that you can't use hstore to cover the same field as
YAML or JSON. That doesn't mean it's not useful - far from it.
cheers
andrew
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