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POCan't get values from Sqlite DB using query
 

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  1. POCan't get values from Sqlite DB using query
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    <p>I used sqlite to populate a DB with some Tables in it. I made a function at another javascript page that executes the database &amp; selects some values from the table. The function is called at $(document).ready(). </p> <p>Javascript: </p> <pre><code> //DB Population function onDeviceReady() { var db = window.openDatabase("Database", "1.0", "SqliteTrial", 20000); db.transaction(populateDB, errorCB, successCB); } function populateDB(tx) { tx.executeSql('DROP TABLE IF EXISTS Subjects'); tx.executeSql('CREATE TABLE IF NOT EXISTS Subjects (id unique, subjectname)'); tx.executeSql('INSERT INTO Subjects (id, subjectname) VALUES (1, "Math")'); tx.executeSql('INSERT INTO Subjects (id, subjectname) VALUES (2, "Science")'); } function GetSubjectsFromDB() { console.log(""); tx.executeSql('SELECT * FROM Subjects', [], queryNSuccess, errorCB); } function queryNSuccess(tx, results) { alert("Query Success"); console.log("Returned rows = " + results.rows.length); if (!results.rowsAffected) { console.log('No rows affected!'); return false; } console.log("Last inserted row ID = " + results.insertId); } function errorCB(err) { alert("Error processing SQL: "+err.code); } </code></pre> <p>Is there some problem with this line? </p> <pre><code>tx.executeSql('SELECT * FROM Subjects', [], queryNSuccess, errorCB); </code></pre> <p>The queryNSuccess isn't called, neither is the errorCB so I don't know what's wrong. </p> <p>This is how I call it at another page: </p> <p>Javascript: </p> <pre><code> $(document).ready(function () { DisplayData(); GetSubjectsFromDB(tx); }); </code></pre>
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    1. This table or related slice is empty.
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    1. USSana Joseph
    1. USSana Joseph
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. This table or related slice is empty.
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      1. This table or related slice is empty.
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    1. COHow is "tx" initialized? Are there any errors reported in the console?
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    2. COI put the code for tx. No errors are found in the console.
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      1. USSana Joseph
    3. COI don't see code where "tx" is set.
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      1. USPointy
 

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