Question

我正在运行SQLite来为创建的执行选择两个范围之间的数据。要从两个日期之间选择数据，我使用以下语句

 public ArrayList<LoopExecution> getDateRangeLoop(Date fromDate, Date toDate, int limit) {
        String query = "SELECT * FROM"
                + " loopexe "
                + " WHERE "
                + " created_on "
                + " BETWEEN " + fromDate.getTime()
                + " AND " +toDate.getTime();

     Cursor cursor = database.rawQuery(query, null);
     ArrayList<LoopExecution> loopExecutions = new ArrayList<LoopExecution>();
            if(cursor.moveToNext()) {
                do {
                    LoopExecution loopExecution = new LoopExecution();
                    loopExecution.setId(cursor.getString(0));
                    Date createdOn = new Date(cursor.getLong(1));
                    loopExecution.setCreatedOn(createdOn);
                    loopExecution.setCreatedBy(cursor.getString(2));
                    loopExecution.setLoopId(cursor.getString(3));
                    loopExecution.setLoopStatus(LoopExecution.LoopStatus.valueOf(cursor.getString(4)));
                    loopExecution.setImage(cursor.getString(5));
                    loopExecution.setResultJson(cursor.getString(6));
                    loopExecution.setBgImage(cursor.getString(7));
                    loopExecution.setTrendImage(cursor.getString(8));
                    loopExecutions.add(loopExecution);
                } while (cursor.moveToNext());
            }
            cursor.close();
            return loopExecutions;
        }

在SQLite数据库中创建查询

public static final String CREATE_LOOP_EXC_TABLE = CREATE_TABLE + LOOP_EXC_TABLE_NAME
        + "(" + ID + " INTEGER PRIMARY KEY AUTOINCREMENT , "
        + CREATED_ON + "TIMESTAMP , " + CREATED_BY + "VARCHAR , "
        + LOOP_ID + "VARCHAR , " + LOOP_STATUS + "INTEGER NOT NULL, "
        + LOOP_IMAGE + "VARCHAR NOT NULL, " + RESULT_JSON + "VARCHAR , "
        + LOOP_BG_IMAGE + "VARCHAR , " + LOOP_TREND_LINE + "VARCHAR , "
        + "FOREIGN KEY(created_by) REFERENCES user(id) , "
        + "FOREIGN KEY(loop_id) REFERENCES loop(id) " + ")";

Answer 1

确保您的日期格式为 yyyy-MM-dd

尝试将日期放在 DATE（）标记

中

String query = "SELECT * FROM"
            + " loopexe "
            + " WHERE "
            + " created_on "
            + " BETWEEN DATE('" +fromDate.getTime() + "') "
            + " AND DATE('" + toDate.getTime() + "') ";

Answer 2

Option one (if created_on is of type INTEGER):

Since you want to use the long timestamp (just a number), which getTime() retrieves, you have to use the < and >= operators.

String query = "SELECT * FROM"
   + " loopexe "
   + " WHERE "
   + " created_on "
   + " >= " + fromDate.getTime()
   + " < " + toDate.getTime();

Option two (if created_on is of type TEXT):

You can use the BETWEEN operator but then you need to specify its arguments in a different format.

String query = "SELECT * FROM"
 + " loopexe "
 + " WHERE "
 + " created_on "
 + " BETWEEN '2017-07-10'"
 + " AND '2017-07-14'";

This is just an example with hardcoded dates. To make it dynamic use:

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
String date = formatter.format(today);

数据范围过滤器在Android中使用的SQLite中不起作用

2 个答案: