Android Learning _ database query using Rawquery encountered problems

Source: Internet
Author: User

Use today

Cursor C = Db.rawquery ("select * from Bus_line where?") Like ' percent ';
New String [] {"Linename"});

Querying the database, taking for granted that the table name from the back can also be substituted with placeholders, so

Cursor C = Db.rawquery ("Select * from?") Where? Like ' percent ';
New String [] {"Bus_line", "Linename"});

This sentence has been an error: near? , a sytax error, and finally took an afternoon to figure out if the array could replace the SQL statement? Placeholders apply only to query parameters.

Android Learning _ database query using Rawquery encountered problems

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.