I tried adding a column to a table which is used in a materialized view and received the error

Cannot drop or modify object '%1' because at least one other object ( %2 '%3') depends upon it

In the remarks it says that this is expected for "...a materialized view, that cannot be automatically invalidated." So, what are the criterias which prevent a materialized view from being automatically invalidated?

asked 30 Aug '11, 04:48

Martin's gravatar image

Martin
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SQL Anywhere does not have a mechanism for automatically invalidating/re-materializing any materialized view when an underlying base table is modified. So it's not a question of which materialized views can or cannot be automatically invalidated; none of them can.

SQL Anywhere does, however, have the ability to automatically invalidate and re-establish ordinary views.

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answered 30 Aug '11, 09:07

Glenn%20Paulley's gravatar image

Glenn Paulley
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accept rate: 43%

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question asked: 30 Aug '11, 04:48

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last updated: 30 Aug '11, 09:07