/// <summary>
/// Creates the sql string.
/// </summary>
/// <returns>The sql string.</returns>
/// <param name="factory">Factory.</param>
/// <param name="isFullName">If set to <c>true</c> is full name.</param>
/// <param name="state">State.</param>
internal override string CreateSqlString(CommandFactory factory, bool isFullName, CreateSqlState state)
{
string leftFieldSql = leftField.CreateSqlString(factory, true, state);
string rightFieldSql = rightField.CreateSqlString(factory, true, state);
string sql = factory.CreateJoinOnMatchSql(leftFieldSql, predicate, rightFieldSql);
return(sql);
}