Question

我需要在我的Android应用中将数据从一个表移动到另一个表

我想使用以下sql：

insert into MYTABLE2 select id, STATUS risposta, DATETIME('now') data_ins from  MYTABLE 2

不幸的是，在表MYTABLE2中有一个_ID列AUTOINCREMENT。我该怎么办？

感谢。

修改这是我的MYTABLE2，我希望用另一个表中的数据填充表格：

CREATE TABLE "ANSWERS" ("_id" INTEGER PRIMARY KEY  AUTOINCREMENT  NOT NULL ,
"ID_QUESTION" INTEGER,"DATE_INS" DATETIME DEFAULT 
(CURRENT_DATE) , "ANSWER" INTEGER)

Answer 1

在INSERT子句

中明确指定列名

INSERT INTO destinationTable (risposta, data_ins)
SELECT STATUS risposta, DATETIME('now') data_ins 
FROM   sourceTable

Answer 2

您可以指定要插入的列。假设_id列为autoincrement并且您要插入其他两列，则可以使用以下内容：

insert into MYTABLE2 (riposta, data_ins)
select STATUS risposta, DATETIME('now') data_ins from  MYTABLE 2

Answer 3

这可能有所帮助，从一个表到另一个表的查询，它还将检查所选列（id）是否已存在于另一个表中。

SQLite QUERY：

INSERT INTO MYTABLE2(id,data_ins ) 
SELECT id, data_ins FROM MYTABLE2
WHERE id NOT IN ( SELECT id FROM MYTABLE1)

机器人：

 String select_insert_query = "INSERT INTO " + TABLE_MYTABLE2
            + "( " + ID + "," + DATA_INS + ") SELECT "
            + ID + ","
            + DATA_INS + " FROM "
            + TABLE_MYTABLE2
            + " WHERE " + ID + " NOT IN (SELECT " + ID
            + " FROM " + TABLE_MYTABLE1 + ")";

    SQLiteDatabase db = this.getWritableDatabase();

    Cursor cursor = db.rawQuery(select_insert_query, null);
    cursor.close();

sqlite插入表select * from

3 个答案: