having method
Add a "having" clause to the query.
Implementation
QueryBuilder having(String column, dynamic value, [dynamic operator]) {
String clause = '$column = $value';
if (value.runtimeType == String) {
clause = "$column = '$value'";
}
if (operator != null) {
clause = "$column $value $operator";
if (operator.runtimeType == String) {
clause = "$column $value '$operator'";
}
}
if (_having == "") {
_having = clause;
} else {
_having = "$_having AND $clause";
}
return this;
}