MySQL 8.0.30
Source Code Documentation
opt_explain_json.h
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22
23#ifndef OPT_EXPLAIN_FORMAT_JSON_INCLUDED
24#define OPT_EXPLAIN_FORMAT_JSON_INCLUDED
25
28
29class Query_result;
31
33class context;
34}
35
36/**
37 Formatter class for EXPLAIN FORMAT=JSON output
38*/
39
41 private:
43
44 public:
46
47 bool is_hierarchical() const override { return true; }
48 bool send_headers(Query_result *result) override;
50 const Explain_format_flags *flags) override;
51 bool end_context(enum_parsing_context context) override;
52 bool flush_entry() override { return false; }
53 qep_row *entry() override;
54};
55
56#endif // OPT_EXPLAIN_FORMAT_JSON_INCLUDED
Formatter class for EXPLAIN FORMAT=JSON output.
Definition: opt_explain_json.h:40
bool flush_entry() override
Flush TABLE/JOIN_TAB property set.
Definition: opt_explain_json.h:52
bool end_context(enum_parsing_context context) override
Leave the current context.
Definition: opt_explain_json.cc:1967
Explain_format_JSON()
Definition: opt_explain_json.h:45
qep_row * entry() override
Get a pointer to the current TABLE/JOIN_TAB property set.
Definition: opt_explain_json.cc:1643
bool send_headers(Query_result *result) override
Send EXPLAIN header item(s) to output stream.
Definition: opt_explain_json.cc:2016
bool begin_context(enum_parsing_context context, Query_expression *subquery, const Explain_format_flags *flags) override
Enter a specified context.
Definition: opt_explain_json.cc:1645
opt_explain_json_namespace::context * current_context
current tree node
Definition: opt_explain_json.h:42
bool is_hierarchical() const override
A hierarchical text or a plain table.
Definition: opt_explain_json.h:47
Definition: opt_explain_format.h:448
Base class for structured and hierarchical EXPLAIN output formatters.
Definition: opt_explain_format.h:503
This class represents a query expression (one query block or several query blocks combined with UNION...
Definition: sql_lex.h:629
Definition: query_result.h:51
Base class for all intermediate tree nodes.
Definition: opt_explain_json.cc:215
Helper class for table property buffering.
Definition: opt_explain_format.h:146
Fido Client Authentication nullptr
Definition: fido_client_plugin.cc:221
static int flags[50]
Definition: hp_test1.cc:39
Definition: opt_explain_format.h:129
EXPLAIN FORMAT=<format> <command>.
enum_parsing_context
Names for different query parse tree parts.
Definition: parse_tree_node_base.h:55
Definition: result.h:29