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MySQL 5.6.14 Source Code Document
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Public Member Functions | |
| table_base_ctx (Explain_context_enum type_arg, const char *name_arg, context *parent_arg) | |
| virtual qep_row * | entry () |
| virtual size_t | id (bool hide) |
| virtual bool | cacheable () |
| virtual bool | dependent () |
Public Member Functions inherited from opt_explain_json_namespace::context | |
| context (Explain_context_enum type_arg, const char *name_arg, context *parent_arg) | |
| virtual bool | format (Opt_trace_context *json) |
| bool | is_query_block () const |
| virtual void | set_child (context *child) |
| virtual void | set_union_result (union_result_ctx *ctx) |
| associate CTX_UNION_RESULT node with CTX_UNION node | |
| virtual bool | add_subquery (subquery_list_enum subquery_type, subquery_ctx *ctx) |
| virtual bool | format_nested_loop (Opt_trace_context *json) |
| virtual bool | add_join_tab (joinable_ctx *ctx) |
| virtual void | set_sort (sort_ctx *ctx) |
| virtual bool | add_query_spec (context *ctx) |
| virtual bool | find_and_set_derived (context *subquery) |
| virtual bool | add_where_subquery (subquery_ctx *ctx, SELECT_LEX_UNIT *subquery) |
| virtual bool | format_derived (Opt_trace_context *json) |
| Helper function to format output for derived subquery if any. | |
| virtual bool | format_where (Opt_trace_context *json) |
| Helper function to format output for associated WHERE subqueries if any. | |
| virtual bool | format_unit (Opt_trace_context *json) |
| Helper function to format output for HAVING, ORDER/GROUP BY subqueries. | |
Public Member Functions inherited from Explain_context | |
| Explain_context (Explain_context_enum type_arg) | |
Public Member Functions inherited from qep_row | |
| void | cleanup () |
| virtual void | register_where_subquery (SELECT_LEX_UNIT *subquery) |
Protected Member Functions | |
| virtual bool | format_body (Opt_trace_context *json, Opt_trace_object *obj) |
Protected Attributes | |
| bool | is_hidden_id |
Protected Attributes inherited from opt_explain_json_namespace::context | |
| const char * | name |
Additional Inherited Members | |
Static Public Member Functions inherited from Sql_alloc | |
| static void * | operator new (size_t size) throw () |
| static void * | operator new[] (size_t size) throw () |
| static void * | operator new[] (size_t size, MEM_ROOT *mem_root) throw () |
| static void * | operator new (size_t size, MEM_ROOT *mem_root) throw () |
| static void | operator delete (void *ptr, size_t size) |
| static void | operator delete (void *ptr, MEM_ROOT *mem_root) |
| static void | operator delete[] (void *ptr, MEM_ROOT *mem_root) |
| static void | operator delete[] (void *ptr, size_t size) |
Public Attributes inherited from opt_explain_json_namespace::context | |
| context * | parent |
| link to parent node or NULL | |
Public Attributes inherited from qep_row | |
| column< uint > | col_id |
| "id" column: seq. number of SELECT withing the query | |
| column< SELECT_LEX::type_enum > | col_select_type |
| "select_type" column | |
| mem_root_str | col_table_name |
| "table" to which the row of output refers | |
| List< const char > | col_partitions |
| "partitions" column | |
| mem_root_str | col_join_type |
| "type" column, see join_type_str array | |
| List< const char > | col_possible_keys |
| "possible_keys": comma-separated list | |
| mem_root_str | col_key |
| "key" column: index that is actually decided to use | |
| mem_root_str | col_key_len |
| "key_length" column: length of the "key" above | |
| List< const char > | col_ref |
| "ref":columns/constants which are compared to "key" | |
| column< longlong > | col_rows |
| "rows": estimated number of examined table rows | |
| column< float > | col_filtered |
| "filtered": % of rows filtered by condition | |
| List< extra > | col_extra |
| "extra" column (traditional) or property list | |
| mem_root_str | col_message |
| replaces "Extra" column if not empty | |
| mem_root_str | col_attached_condition |
| former "Using where" | |
| uint | query_block_id |
| query block id for materialized subqueries | |
| List < opt_explain_json_namespace::context > | derived_from |
| List< const char > | col_key_parts |
| used parts of the key | |
| bool | is_dependent |
| bool | is_cacheable |
| bool | using_temporary |
| bool | is_materialized_from_subquery |
| bool | is_update |
| bool | is_delete |
Definition at line 520 of file opt_explain_json.cc.
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protectedvirtual |
Format JSON object body
| json | Formatter |
| obj | Object of this body |
| false | Ok |
| true | Error |
Implements opt_explain_json_namespace::context.
Reimplemented in opt_explain_json_namespace::join_tab_ctx, opt_explain_json_namespace::message_ctx, and opt_explain_json_namespace::union_result_ctx.
Definition at line 561 of file opt_explain_json.cc.


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inlinevirtual |
Analogue of the "id" column in the traditional EXPLAIN output
| hide | if true, ban the output of K_SELECT_ID JSON property in the underlying table_with_where_and_derived_ctx objects |
Implements opt_explain_json_namespace::context.
Reimplemented in opt_explain_json_namespace::materialize_ctx, opt_explain_json_namespace::join_tab_ctx, opt_explain_json_namespace::message_ctx, opt_explain_json_namespace::table_with_where_and_derived, and opt_explain_json_namespace::union_result_ctx.
Definition at line 537 of file opt_explain_json.cc.