Android 如何在ORMLite中构建Select查询(更多没有联接的表)
在ORMLite中查询此信息的最佳方式是什么Android 如何在ORMLite中构建Select查询(更多没有联接的表),android,sql,select,join,ormlite,Android,Sql,Select,Join,Ormlite,在ORMLite中查询此信息的最佳方式是什么 SELECT JOB.TASK_JOB, JOB.NAME_JOB, JOB_SETTINGS.DAY1, JOB_SETTINGS.DAY2, JOB_SETTINGS.DAY3, JOB_SETTINGS.DAY4, JOB_SETTINGS.DAY5, JOB_SETTINGS.
SELECT JOB.TASK_JOB,
JOB.NAME_JOB,
JOB_SETTINGS.DAY1,
JOB_SETTINGS.DAY2,
JOB_SETTINGS.DAY3,
JOB_SETTINGS.DAY4,
JOB_SETTINGS.DAY5,
JOB_SETTINGS.DAY6,
JOB_SETTINGS.DAY7,
JOB_SETTINGS.HOURSPERWEEK,
JOB_SETTINGS.PAYPERHOUR,
JOB_SETTINGS.VARIABLEHOURS,
WORKINGDAY.DATE_WD,
WORKINGDAY.H_BREAK,
WORKINGDAY.H_REAL,
WORKINGDAY.H_IN,
WORKINGDAY.H_OUT
FROM JOB, JOB_SETTINGS,WORKINGDAY
WHERE JOB.ID_JOB = JOB_SETTINGS.ID_JOB
AND JOB_SETTINGS.ID_JOB = WORKINGDAY.ID_JOB
AND JOB.ID_JOB = 2
我对每个表都有一个类(标准ORMLite),但我不知道如何构建这个查询
谢谢
编辑:
我写了这段代码,但实际上我无法继续,因为我对OrmLite语法感到困惑
DbHelperJob queryDao = new DbHelperJob(getActivity());
QueryBuilder<Job, String> qJob = queryDao.getJobDao().queryBuilder();
qJob.selectColumns("NAME_JOB", "TASK_JOB");
QueryBuilder<JobSettings, String> qJobSett = queryDao.getJobSettDao().queryBuilder();
qJobSett.selectColumns("DAY1", "DAY2", "DAY3", "DAY4", "DAY5", "DAY6", "DAY7", "HOURSPERWEEK", "PAYPERHOUR", "VARIABLEHOURS");
QueryBuilder<WorkingDay, String> qWD = queryDao.getWDDao().queryBuilder();
qWD.selectColumns("DATE_WD", "H_BREAK", "H_REAL", "H_IN", "H_OUT");
DbHelperJob queryDao=newdbhelperjob(getActivity());
QueryBuilder qJob=queryDao.getJobDao().QueryBuilder();
选择列(“名称作业”、“任务作业”);
QueryBuilder qJobSett=queryDao.getJobSettDao().QueryBuilder();
qJobSett.选择列(“第1天”、“第2天”、“第3天”、“第4天”、“第5天”、“第6天”、“第7天”、“每周小时数”、“每小时工资”、“可变小时数”);
QueryBuilder qWD=queryDao.getWDDao().QueryBuilder();
qWD.selectColumns(“DATE_WD”、“H_BREAK”、“H_REAL”、“H_IN”、“H_OUT”);
Android查询具有以下参数:
使用它。这与ORMLite无关,但SQLiteQueryBuilder中有一个非常方便的查询工具。您可以这样做:
private static final String COLS = new String[] {
JOB.TASK_JOB,
JOB.NAME_JOB,
JOB_SETTINGS.DAY1,
JOB_SETTINGS.DAY2,
JOB_SETTINGS.DAY3,
JOB_SETTINGS.DAY4,
JOB_SETTINGS.DAY5,
JOB_SETTINGS.DAY6,
JOB_SETTINGS.DAY7,
JOB_SETTINGS.HOURSPERWEEK,
JOB_SETTINGS.PAYPERHOUR,
JOB_SETTINGS.VARIABLEHOURS,
WORKINGDAY.DATE_WD,
WORKINGDAY.H_BREAK,
WORKINGDAY.H_REAL,
WORKINGDAY.H_IN,
WORKINGDAY.H_OUT
}
private static String SEL =
"JOB.ID_JOB = JOB_SETTINGS.ID_JOB"
+ "AND JOB_SETTINGS.ID_JOB = WORKINGDAY.ID_JOB"
+ "AND JOB.ID_JOB = 2"
private static String TABLES = "JOB, JOB_SETTINGS, WORKINGDAY""
// in the query method...
db.execSQL(
SQLiteQueryBuilder.buildQueryString(
false, TABLES, COLS, SEL, null, null, null, null);
您可以使用Dao的queryRaw()方法。比如说
GenericRawResults<String[]> rawResults = queryDao.queryRaw("SELECT JOB.TASK_JOB,
JOB.NAME_JOB,
JOB_SETTINGS.DAY1,
JOB_SETTINGS.DAY2,
JOB_SETTINGS.DAY3,
JOB_SETTINGS.DAY4,
JOB_SETTINGS.DAY5,
JOB_SETTINGS.DAY6,
JOB_SETTINGS.DAY7,
JOB_SETTINGS.HOURSPERWEEK,
JOB_SETTINGS.PAYPERHOUR,
JOB_SETTINGS.VARIABLEHOURS,
WORKINGDAY.DATE_WD,
WORKINGDAY.H_BREAK,
WORKINGDAY.H_REAL,
WORKINGDAY.H_IN,
WORKINGDAY.H_OUT
FROM JOB, JOB_SETTINGS,WORKINGDAY
WHERE JOB.ID_JOB = JOB_SETTINGS.ID_JOB
AND JOB_SETTINGS.ID_JOB = WORKINGDAY.ID_JOB
AND JOB.ID_JOB = 2")
GenericRawResults rawResults=queryDao.queryRaw(“选择JOB.TASK\u作业,
JOB.NAME\u JOB,
JOB_SETTINGS.DAY1,
JOB_SETTINGS.DAY2,
作业设置。第3天,
作业设置。第4天,
作业设置第5天,
作业设置。第6天,
作业设置。第7天,
JOB_SETTINGS.hours每周,
作业设置。每小时工资,
作业设置。可变工时,
工作日日期,
工作日休息,
工作日,
工作日,
工作日
从作业、作业设置、工作日
其中JOB.ID\u JOB=JOB\u SETTINGS.ID\u JOB
和JOB_SETTINGS.ID_JOB=WORKINGDAY.ID_JOB
和JOB.ID_JOB=2”)
请在此阅读更多内容谢谢您的回复!但我会用OrmLite构建这个查询……事实上,我正在用这个库编写一个Android应用程序!:)有什么解决办法吗?是的。。。。我非常反对ORM,尤其是在Android中。如果你真的必须做ORM,我想你会在这里找到你需要的答案:。您正在进行3路连接,这可能需要进行一些调整。。。这是我试图避免ORM的原因之一。。。很幸运,但在奥姆利特有一个不同的辛塔克斯,我对此感到非常困惑…谢谢!它工作!!!非常感谢你!!我会加上+1的答案,但我没有一个最低的声誉得分!谢谢