SQL3550W 带GENERATED ALWAYS字段的表的import

果表里有字段定义为GENERATED ALWAYS，那么import的时候会报错：

SQL3550W The field value in row “1″ and column “1″ is not NULL, but the
target column has been defined as GENERATED ALWAYS.

参照《包含生成列的 DB2 表上的数据移入和移出 — 入门》，用以下语句来导入数据：

db2 “import from of del|ixf modified by identityignore insert into #tablename# “