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-7023: Dropping of all columns not allowed 

Explanation:

You have attempted to drop all columns in a table. This is not permitted.

User Action:

...

       1.      Load the table with the  DROP TABLE statementinstead. This deletes all view tables, privileges, indexes, referential CONSTRAINT definitions and so on that depend on the table.

       2.      Then use the CREATE TABLE statement to define a new table with the same name.

 

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