diff options
Diffstat (limited to 'sql/sql_lex.h')
| -rw-r--r-- | sql/sql_lex.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sql/sql_lex.h b/sql/sql_lex.h index afc93e5a646..9f720fdef54 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -3299,6 +3299,12 @@ public: List<Name_resolution_context> context_stack; SELECT_LEX *select_stack[MAX_SELECT_NESTING + 1]; uint select_stack_top; + /* + Usually this is set to 0, but for INSERT/REPLACE SELECT it is set to 1. + When parsing such statements the pointer to the most outer select is placed + into the second element of select_stack rather than into the first. + */ + uint select_stack_outer_barrier; SQL_I_List<ORDER> proc_list; SQL_I_List<TABLE_LIST> auxiliary_table_list, save_list; @@ -3738,6 +3744,17 @@ public: bool copy_db_to(LEX_CSTRING *to); + void inc_select_stack_outer_barrier() + { + select_stack_outer_barrier++; + } + + SELECT_LEX *parser_current_outer_select() + { + return select_stack_top - 1 == select_stack_outer_barrier ? + 0 : select_stack[select_stack_top - 2]; + } + Name_resolution_context *current_context() { return context_stack.head(); @@ -4515,6 +4532,29 @@ public: return create_info.vers_info; } + /* The list of history-generating DML commands */ + bool vers_history_generating() const + { + switch (sql_command) + { + case SQLCOM_DELETE: + return !vers_conditions.delete_history; + case SQLCOM_UPDATE: + case SQLCOM_UPDATE_MULTI: + case SQLCOM_DELETE_MULTI: + case SQLCOM_REPLACE: + case SQLCOM_REPLACE_SELECT: + return true; + case SQLCOM_INSERT: + case SQLCOM_INSERT_SELECT: + return duplicates == DUP_UPDATE; + case SQLCOM_LOAD: + return duplicates == DUP_REPLACE; + default: + return false; + } + } + int add_period(Lex_ident name, Lex_ident_sys_st start, Lex_ident_sys_st end) { if (lex_string_cmp(system_charset_info, &start, &end) == 0) |