| 25 | |
| 26 | |
| 27 | bool |
| 28 | Window_spec::check_window_names(List_iterator_fast<Window_spec> &it) |
| 29 | { |
| 30 | if (window_names_are_checked) |
| 31 | return false; |
| 32 | const Lex_ident_window name= this->name(); |
| 33 | const Lex_ident_window ref_name= window_reference(); |
| 34 | it.rewind(); |
| 35 | Window_spec *win_spec; |
| 36 | while((win_spec= it++) && win_spec != this) |
| 37 | { |
| 38 | const Lex_ident_window win_spec_name= win_spec->name(); |
| 39 | if (!win_spec_name.str) |
| 40 | break; |
| 41 | if (name.str && name.streq(win_spec_name)) |
| 42 | { |
| 43 | my_error(ER_DUP_WINDOW_NAME, MYF(0), name.str); |
| 44 | return true; |
| 45 | } |
| 46 | if (ref_name.str && win_spec_name.streq(ref_name)) |
| 47 | { |
| 48 | if (partition_list->elements) |
| 49 | { |
| 50 | my_error(ER_PARTITION_LIST_IN_REFERENCING_WINDOW_SPEC, MYF(0), |
| 51 | ref_name.str); |
| 52 | return true; |
| 53 | } |
| 54 | if (win_spec->order_list->elements && order_list->elements) |
| 55 | { |
| 56 | my_error(ER_ORDER_LIST_IN_REFERENCING_WINDOW_SPEC, MYF(0), |
| 57 | ref_name.str); |
| 58 | return true; |
| 59 | } |
| 60 | if (win_spec->window_frame) |
| 61 | { |
| 62 | my_error(ER_WINDOW_FRAME_IN_REFERENCED_WINDOW_SPEC, MYF(0), |
| 63 | ref_name.str); |
| 64 | return true; |
| 65 | } |
| 66 | referenced_win_spec= win_spec; |
| 67 | if (partition_list->elements == 0) |
| 68 | partition_list= win_spec->partition_list; |
| 69 | if (order_list->elements == 0) |
| 70 | order_list= win_spec->order_list; |
| 71 | } |
| 72 | } |
| 73 | if (ref_name.str && !referenced_win_spec) |
| 74 | { |
| 75 | my_error(ER_WRONG_WINDOW_SPEC_NAME, MYF(0), ref_name.str); |
| 76 | return true; |
| 77 | } |
| 78 | window_names_are_checked= true; |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | Window_spec::print(String *str, enum_query_type query_type) |