如何使用java在mongodb中使用类似查询获取所有记录

Question

I want to fetch all the records whose employeeId starts with 123.For this, I thought of using like query with regex.

Sample Records in MongoDB:
============================
{name:"XYZ",employeeID : 123456}
{name:"ABC",employeeID : 123789}
{name:"DEF",employeeID : 214356}

After query, it should retrieve only first two records.

Can anyone please help me out regarding this issue.

Answer 1

Try this

Write Query like this

db.getCollection('employee').find({ $where: "/^123.*/.test(this.employeeID)" })

Result :

/* 1 */
{
    "_id" : ObjectId("57d15ab13f239d775c5cc667"),
    "name" : "XYZ",
    "employeeID" : 123456
}

/* 2 */
{
    "_id" : ObjectId("57d15ab13f239d775c5cc668"),
    "name" : "ABC",
    "employeeID" : 123789
}

Answer 2

Try this:

db.getCollection('test').find({ employeeID: { $regex: /^123.*$/ } })