queryWhere method
Adds a 'WHERE' clause to the SQL query.
The conditions parameter is optional and defaults to an empty list. It should contain the list of conditions for the 'WHERE' clause.
This method adds a 'WHERE' clause to the _select list and then returns the SqlBuilder instance for method chaining.
Usage:
var builder = SqlBuilder();
builder.queryWhere(conditions: ['field1 = value1', 'field2 = value2']);
Implementation
SqlBuilder queryWhere({List<String> conditions = const []}) {
_select.add('WHERE ${conditions.join(' ')} ');
return this;
}