使用SQLiteQueryBuilder进行多个连接

Question

我正在使用内容提供程序在sqlite中存储数据，并使用游标适配器在我的列表视图中显示数据。 我有3个表

1）Leads- [_id，姓名，....]

2）LeadsAttachment- [_id，格式，LeadId，...]（LeadId是FK到_id PK的信息表）

3）LeadsProduct- [_id，PNAME，LeadId，...]（LeadId是FK到_id信息表中的PK）

uptill现在我正在执行左引线和LeadsAttachment之间加入使用像这样的SQLQueryBuilder

SQLiteQueryBuilder leadsWithAttachmentQueryBuilder = new SQLiteQueryBuilder(); 
leadsWithAttachmentQueryBuilder.setTables(
      MBenzContracts.LeadsEntry.TABLE_NAME + " LEFT JOIN " + 
        MBenzContracts.LeadAttachmentEntry.TABLE_NAME + 
        " ON " + MBenzContracts.LeadAttachmentEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadAttachmentEntry.COLUMN_Lead_ID + 
        " = " + MBenzContracts.LeadsEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadsEntry._ID); 

我将如何执行2左联接在一起SQLiteQueryBuilder让我得到 全部来自信息记录与LeadsAttachment和LeadsProduct

沿

Answer 1

想通了，它很简单

leadsWithProductAndAttachmentQueryBuilder.setTables(
      MBenzContracts.LeadsEntry.TABLE_NAME + " LEFT JOIN " + 
        MBenzContracts.LeadProductEntry.TABLE_NAME + 
        " ON " + MBenzContracts.LeadProductEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadProductEntry.COLUMN_Lead_ID + 
        " = " + MBenzContracts.LeadsEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadsEntry._ID + " LEFT JOIN " + 
        MBenzContracts.LeadAttachmentEntry.TABLE_NAME + 
        " ON " + MBenzContracts.LeadAttachmentEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadAttachmentEntry.COLUMN_Lead_ID + 
        " = " + MBenzContracts.LeadsEntry.TABLE_NAME + 
        "." + MBenzContracts.LeadsEntry._ID);