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var sql = require('sql.js'); // or sql = window.SQL if you are in a browser // Create a database var db = new sql.Database(); // NOTE: You can also use new sql.Database(data) where // data is an Uint8Array representing an SQLite database file // Execute some sql sqlstr = "CREATE TABLE hello (a int, b char);"; sqlstr += "INSERT INTO hello VALUES (0, 'hello');" sqlstr += "INSERT INTO hello VALUES (1, 'world');" db.run(sqlstr); // Run the query without returning anything var res = db.exec("SELECT * FROM hello"); /* [ {columns:['a','b'], values:[[0,'hello'],[1,'world']]} ] */ // Prepare an sql statement var stmt = db.prepare("SELECT * FROM hello WHERE a=:aval AND b=:bval"); // Bind values to the parameters and fetch the results of the query var result = stmt.getAsObject({':aval' : 1, ':bval' : 'world'}); console.log(result); // Will print {a:1, b:'world'} // Bind other values stmt.bind([0, 'hello']); while (stmt.step()) console.log(stmt.get()); // Will print [0, 'hello'] // You can also use javascript functions inside your SQL code // Create the js function you need function add(a, b) {return a+b;} // Specifies the SQL function's name, the number of it's arguments, and the js function to use db.create_function("add_js", add); // Run a query in which the function is used db.run("INSERT INTO hello VALUES (add_js(7, 3), add_js('Hello ', 'world'));"); // Inserts 10 and 'Hello world' // free the memory used by the statement stmt.free(); // You can not use your statement anymore once it has been freed. // But not freeing your statements causes memory leaks. You don't want that. // Export the database to an Uint8Array containing the SQLite database file var binaryArray = db.export(); |