String ident = identExpr.getName();
if (ident.equalsIgnoreCase("x")) {
String charValue = lexer.stringVal();
lexer.nextToken();
expr = new SQLHexExpr(charValue);
return primaryRest(expr);
} else if (ident.equalsIgnoreCase("b")) {
String charValue = lexer.stringVal();
lexer.nextToken();