Sketched rough parser code construction including some SQL AST classes.

core/SqlAstExpression.cpp

@@ -0,0 +1,13 @@
+#include "SqlAstExpression.h"
+
+using namespace SqlAst;
+
+
+std::shared_ptr<SqlAst::Expression> parseExpression(SqlParser &parser)
+{
+	// get token, what is it?
+	// number
+	// symbol
+	// left parenthesis
+
+}