Adds support for Query.Text() to sql function calls (closes #10)

lib/Select.js

@@ -192,6 +192,14 @@ function SelectQuery(Dialect) {
 
 					if (Array.isArray(sql.from[i].select[j].c)) {
 						str += sql.from[i].select[j].c.map(function (el) {
+							if (typeof el.type == "function") {
+								switch (el.type()) {
+									case "text":
+										return Dialect.escapeVal(el.data);
+									default:
+										return el;
+								}
+							}
 							if (typeof el != "string") {
 								return el;
 							}

test/common.js

@@ -2,6 +2,7 @@ var common = exports;
 var Query  = require('../');
 
 common.Query = Query;
+common.Text  = Query.Text;
 
 common.Select = function () {
 	var q = new (Query.Query)();

test/integration/test-select-type.js

@@ -0,0 +1,22 @@
+var common     = require('../common');
+var assert     = require('assert');
+
+assert.equal(
+	common.Select().from('table1').fun('myfun', 'col1').build(),
+	"SELECT MYFUN(`col1`) FROM `table1`"
+);
+
+assert.equal(
+	common.Select().from('table1').fun('myfun', [ 'col1', 'col2']).build(),
+	"SELECT MYFUN(`col1`, `col2`) FROM `table1`"
+);
+
+assert.equal(
+	common.Select().from('table1').fun('myfun', [ 'col1', 'col2'], 'alias').build(),
+	"SELECT MYFUN(`col1`, `col2`) AS `alias` FROM `table1`"
+);
+
+assert.equal(
+	common.Select().from('table1').fun('myfun', [ 'col1', common.Text('col2') ], 'alias').build(),
+	"SELECT MYFUN(`col1`, 'col2') AS `alias` FROM `table1`"
+);