SqlCommand Object
(
    [name] => Sql
    [query] => alter table user_suasaude

    drop constraint NOT NULL

    [connection] => Resource id #4
    [params] => 
    [exception] => ERROR:  syntax error at or near "NOT"
LINE 3:     drop constraint NOT NULL
                            ^
    [types] => 
    [error] => 1
    [AffectedRows] => 
)