How to pass two or more selection argument in "query" method

Question

I am using query method, but I don't no how to pass more than one selection argument in query method.

My query method should return result as same as this sql statement :

SELECT _id FROM CONATCT_TAGS WHERE TAG1='tagname' OR
                                   TAG2='tagname' OR 
                                   TAG3='tagname' OR 
                                   TAG4='tagname' OR
                                   TAG5='tagname';

Answer 1

If you want to use the built-in optimization in the Android SQLite connection you could do something like this instead:

String table = "CONTACT_TAGS";
String[] columns = {"_id"};
String where = "TAG1=? OR TAG2=? OR TAG3=? OR TAG4=? OR TAG5=?";
String[] args = {"tagname", "tagname", "tagname", "tagname", "tagname"};

SQLiteDatabase db = myDatabaseHelper.getReadableDatabase();
Cursor cursor = db.query(table, columns, where, args, null, null, null);

The difference from @raultum's solution is that you let the database connector decide how to interpret the submitted data. This is extra interesting from a security perspective.

Answer 2

Try something like that..

SQLiteDatabase db = YourDatabaseHelper.getReadableDatabase();
String TABLE = "CONTACT_TAGS";
String[] FIELDS = { "_id" };
String WHERE =  "TAG1='tagname' OR TAG2='tagname' OR TAG3='tagname' OR TAG4='tagname' OR TAG5='tagname' ";
// Execute
cursor = db.query(TABLE, FIELDS, WHERE, null, null, null, null);

If you read the documentation of the Cursor.query() method you find the definition for selection as follows:

selection: A filter declaring which rows to return, formatted as an SQL WHERE clause (excluding the WHERE itself). Passing null will return all rows for the given table.