select DATA_TYPE from User_Tab_Columns t where t.column_name=upper('column_name')
and T.TABLE_NAME=upper(trim('table_name'));
注意列名和表名要大写
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select DATA_TYPE from User_Tab_Columns t where t.column_name=upper('column_name')
and T.TABLE_NAME=upper(trim('table_name'));
注意列名和表名要大写