PLS-00570: different number of columns in the multiset and
cast expressions
Answer / guest
Cause: Number of columns in the collection returned by
MULTISET and the number of columns for the CAST type don't
match. For example: create type tab_obj as object (n
number); create type tab1 as table of tab_obj; create table
tab2 (col1 number, col2 number); select CAST(MULTISET(select
col1, col2 from tab2) as tab1) from tab2;
Action: none
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