MySQL 9.0.0
Source Code Documentation
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Represents SHOW CHARACTER SET statement. More...
#include <sql_show.h>
Public Member Functions | |
Sql_cmd_show_charsets () | |
Public Member Functions inherited from Sql_cmd_show | |
Sql_cmd_show (enum_sql_command sql_command) | |
enum_sql_command | sql_command_code () const override |
Return the command code for this statement. More... | |
virtual bool | check_parameters (THD *) |
bool | precheck (THD *thd) override |
Generally, the SHOW commands do not distinguish precheck and regular check. More... | |
bool | check_privileges (THD *) override |
Perform an authorization check for a prepared SELECT statement. More... | |
bool | execute (THD *thd) override |
Execute a DML statement. More... | |
Public Member Functions inherited from Sql_cmd_select | |
Sql_cmd_select (Query_result *result_arg) | |
bool | is_data_change_stmt () const override |
bool | accept (THD *thd, Select_lex_visitor *visitor) override |
const MYSQL_LEX_CSTRING * | eligible_secondary_storage_engine (THD *thd) const override |
Is this statement of a type and on a form that makes it eligible for execution in a secondary storage engine? More... | |
Public Member Functions inherited from Sql_cmd_dml | |
bool | prepare (THD *thd) override |
Command-specific resolving (doesn't include LEX::prepare()) More... | |
enum enum_sql_cmd_type | sql_cmd_type () const override |
bool | is_single_table_plan () const override |
Query_result * | query_result () const |
void | set_query_result (Query_result *result) |
Set query result object for this query statement. More... | |
void | set_lazy_result () |
Signal that root result object needs preparing in next execution. More... | |
bool | are_dynamic_parameters_allowed () const final |
Signal that DML statement can have dynamic parameters. More... | |
Public Member Functions inherited from Sql_cmd | |
bool | needs_explicit_preparation () const |
bool | is_regular () const |
bool | is_prepared () const |
virtual void | cleanup (THD *) |
Command-specific reinitialization before execution of prepared statement. More... | |
void | set_owner (Prepared_statement *stmt) |
Set the owning prepared statement. More... | |
Prepared_statement * | owner () const |
Get the owning prepared statement. More... | |
void | set_as_part_of_sp () |
Mark statement as part of procedure. More... | |
bool | is_part_of_sp () const |
virtual bool | is_bulk_load () const |
void | disable_secondary_storage_engine () |
Disable use of secondary storage engines in this statement. More... | |
void | enable_secondary_storage_engine () |
bool | secondary_storage_engine_disabled () const |
Has use of secondary storage engines been disabled for this statement? More... | |
void | use_secondary_storage_engine (const handlerton *hton) |
Mark the current statement as using a secondary storage engine. More... | |
bool | using_secondary_storage_engine () const |
Is this statement using a secondary storage engine? More... | |
const handlerton * | secondary_engine () const |
Get the handlerton of the secondary engine that is used for executing this statement, or nullptr if a secondary engine is not used. More... | |
void | set_optional_transform_prepared (bool value) |
bool | is_optional_transform_prepared () |
Additional Inherited Members | |
Protected Member Functions inherited from Sql_cmd_select | |
bool | may_use_cursor () const override |
bool | prepare_inner (THD *thd) override |
Prepare a SELECT statement. More... | |
Protected Member Functions inherited from Sql_cmd_dml | |
Sql_cmd_dml () | |
bool | is_empty_query () const |
void | set_empty_query () |
Set statement as returning no data. More... | |
bool | check_all_table_privileges (THD *thd) |
Read and check privileges for all tables in a DML statement. More... | |
virtual bool | execute_inner (THD *thd) |
The inner parts of query optimization and execution. More... | |
virtual bool | restore_cmd_properties (THD *thd) |
Restore command properties before execution. More... | |
virtual bool | save_cmd_properties (THD *thd) |
Save command properties, such as prepared query details and table props. More... | |
const MYSQL_LEX_CSTRING * | get_eligible_secondary_engine (THD *thd) const |
Helper function that checks if the command is eligible for secondary engine and if that's true returns the name of that eligible secondary storage engine. More... | |
Protected Member Functions inherited from Sql_cmd | |
Sql_cmd () | |
virtual | ~Sql_cmd () |
void | set_prepared () |
Set this statement as prepared. More... | |
Protected Attributes inherited from Sql_cmd_show | |
enum_sql_command | m_sql_command |
Protected Attributes inherited from Sql_cmd_dml | |
LEX * | lex |
Pointer to LEX for this statement. More... | |
Query_result * | result |
Pointer to object for handling of the result. More... | |
bool | m_empty_query |
True if query will produce no rows. More... | |
bool | m_lazy_result |
True: prepare query result on next execution. More... | |
Represents SHOW CHARACTER SET statement.
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inline |