Grails db-migration dbm-db-doc脚本失败

Question

我尝试运行“dbm-db-doc”脚本。似乎脚本无法正常工作，因为它已在已执行的更改日志上失败。这是改变：

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在数据库中，此更改日志已标记为“已执行”

但是在运行脚本时，似乎脚本想要执行该更改日志并因为“product.prepares_for_exam_id”列已被删除而失败。

完整错误：

changeSet(author: "Bernardo (generated)", id: "1436991688243-1") {
    addColumn(tableName: "prepares_for_exam") {
        column(name: "exam_id", type: "bigint")
    }

    grailsChange {
        change {
            sql.execute("UPDATE prepares_for_exam JOIN product ON prepares_for_exam.id = product.prepares_for_exam_id SET prepares_for_exam.exam_id = product.id")
        }
        rollback {
        }
    }

    addNotNullConstraint(columnDataType: "bigint", tableName: "prepares_for_exam", columnName: "exam_id")
}

changeSet(author: "Bernardo (generated)", id: "1436991688243-32") {
    dropColumn(columnName: "prepares_for_exam_id", tableName: "product")
}

所以我的问题是：

“dbm-db-doc”-script中是否有错误或者我是否因为变更集搞砸了什么？

Answer 1

我正在回答我自己的问题，因为我发现了溶剂：

似乎迁移插件每次都在执行“grailsChange”部分，虽然changeSet已经执行了（我不知道为什么......答案欢迎！）

sollution不使用“grailsChange”并改为使用普通的“sql”命令。这是溶剂：

changeSet(author: "Bernardo (generated)", id: "1436991688243-1") {
        addColumn(tableName: "prepares_for_exam") {
            column(name: "exam_id", type: "bigint")
        }

        sql(""" UPDATE prepares_for_exam JOIN product ON prepares_for_exam.id = product.prepares_for_exam_id SET prepares_for_exam.exam_id = product.id """ )

        addNotNullConstraint(columnDataType: "bigint", tableName: "prepares_for_exam", columnName: "exam_id")
    }