0

我需要创建一个外键来映射我的表。基本上，这个外键是表的主键。但是插入语句正在引起问题。它是一个 SQLite 数据库。具有主键的表是

db.execSQL("CREATE TABLE IF NOT EXISTS "
            + Main
            + "(ROWID integer primary key autoincrement NOT NULL,appln_date VARCHAR,appln_no VARCHAR,rupees VARCHAR,tenure VARCHAR,asset VARCHAR);");

带有外键的表是

db.execSQL("CREATE TABLE IF NOT EXISTS "
            + Applicant
            + "(AppID integer primary key autoincrement, " +
                    "app_salutation VARCHAR,app_fname VARCHAR,app_mname VARCHAR,app_lname VARCHAR,app_door VARCHAR,app_street VARCHAR,app_building VARCHAR,app_area VARCHAR,app_post VARCHAR,app_tehsil VARCHAR,app_state VARCHAR,app_landmark VARCHAR,ROWID integer References "+Main+"(ROWID));");

插入语句是

openOrCreateDatabase();
    createappinfo();
    String insertString = "insert into " + Applicant
            + " Values(";

    String inString = "";
    for (int i =0; i < data.size(); i++) {

        inString = inString + "\"" + data.get(i) + "\",";

    }

    inString = inString.substring(0, inString.length() - 1);
    int row=db.rawQuery("select * from "+Main+";" ,null).getCount()+1;
    insertString = insertString + row+"," +inString + ");";
    System.out.println("** insert value ** " + insertString);
    db.execSQL(insertString);

    closeDatabase();

但是这段代码正在产生错误..

04-25 11:43:57.422: E/SQLiteLog(17825): (1) table applicanttable has 14 columns but 13 values were supplied
4

1 回答 1

0

你应该在数据库上做这样的声明：

CREATE TABLE IF NOT EXISTS "Main" (ROWID integer primary key autoincrement NOT NULL,appln_date VARCHAR,appln_no VARCHAR,rupees VARCHAR,tenure VARCHAR,asset VARCHAR);
CREATE TABLE IF NOT EXISTS "Applicant" (AppID integer primary key autoincrement, app_salutation VARCHAR,app_fname VARCHAR,app_mname VARCHAR,app_lname VARCHAR,app_door VARCHAR,app_street VARCHAR,app_building VARCHAR,app_area VARCHAR,app_post VARCHAR,app_tehsil VARCHAR,app_state VARCHAR,app_landmark VARCHAR,ROWID integer References "Main"(ROWID));
insert into "Applicant" Values("11","a","b","c","d","e","f","g","h","i","j","k","l", (SELECT Count(*) +1 FROM main));

此示例中的值是随机的。

因此，如果您 100% 确定您的 for 语句正确返回除最后一个以外的所有值。您的最后一个论点应如下所示：

insertString = "ROWID integer References "Main"(ROWID);";
于 2013-04-25T13:04:41.697 回答