sqlite - Search two or more DB columns with Android Search Dialog -


i have 3 column db android search dialog working correctly. i'd able type in work or phrase 2 different columns , have return results searched phrase either in 1 or other column, or both columns. i'm using below method:

    //--- records search public cursor searchdb(string query) {   return db.query(true, db_table, new string[] { key_rowid, key_column1, key_column2,  key_column3 }, key_column1 + " like" + "'%" + query + "%' or " + key_column2 +   " like" + "'%" + query + "%' or " + key_column3 + " like" + "'%" + query + "%'",   null, null, null, null, null);   } //--- end records search

so works fine if have db this:

    col1     col2     col3 ______________________  hi       there    guys how

and searched on "hi" return "hi there guys". want search on "hi there" , have return whole row of 3 columns - "hi there guys". tried adding:

or "+ key_column2 + key_column3 + " like" + "'%" + query + "%'"

but crashes search when search run.

i think should apply 1 more step before querying database.

you should split query string in array of words.

then solution use selectionargs parameter pass words of query:

string[] querywords = splitinwords(query); // own method split string in words db.query(true, db_table, new string[] { key_rowid, key_column1, key_column2, key_column3 },  key_column1 + " like" + " ? or " + key_column2 + " like" + " ? or " + key_column3 + " like" + " ?", querywords, null, null, null, null);

the problem previous 1 you're supposed have 3 words (i have never tried don't know sure result you'll get). solution create selection string:

string[] querywords = splitinwords(query); // own method split string in words string selection = ""; string[] keycolumns = new string[]{key_column1, key_column2, key_column3}; (int = 0; < querywords.length; i++){   if ( > 1){   selection += " or ";   } selection += keycolumns[i] + " " + querywords[i]; }

well might not you're looking you'll adapt depending on expect queried (you can build longer selection string pairs key/queryword). , never found better idea handle kind of queries.


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