mirror of
https://github.com/MariaDB/server.git
synced 2025-08-01 03:47:19 +03:00
comments
This commit is contained in:
@ -129,7 +129,7 @@ enum enum_alter_inplace_result {
|
|||||||
*/
|
*/
|
||||||
#define HA_PRIMARY_KEY_REQUIRED_FOR_POSITION (1ULL << 16)
|
#define HA_PRIMARY_KEY_REQUIRED_FOR_POSITION (1ULL << 16)
|
||||||
#define HA_CAN_RTREEKEYS (1ULL << 17)
|
#define HA_CAN_RTREEKEYS (1ULL << 17)
|
||||||
#define HA_NOT_DELETE_WITH_CACHE (1ULL << 18)
|
#define HA_NOT_DELETE_WITH_CACHE (1ULL << 18) /* unused */
|
||||||
/*
|
/*
|
||||||
The following is we need to a primary key to delete (and update) a row.
|
The following is we need to a primary key to delete (and update) a row.
|
||||||
If there is no primary key, all columns needs to be read on update and delete
|
If there is no primary key, all columns needs to be read on update and delete
|
||||||
@ -143,7 +143,7 @@ enum enum_alter_inplace_result {
|
|||||||
#define HA_HAS_OLD_CHECKSUM (1ULL << 24)
|
#define HA_HAS_OLD_CHECKSUM (1ULL << 24)
|
||||||
/* Table data are stored in separate files (for lower_case_table_names) */
|
/* Table data are stored in separate files (for lower_case_table_names) */
|
||||||
#define HA_FILE_BASED (1ULL << 26)
|
#define HA_FILE_BASED (1ULL << 26)
|
||||||
#define HA_NO_VARCHAR (1ULL << 27)
|
#define HA_NO_VARCHAR (1ULL << 27) /* unused */
|
||||||
#define HA_CAN_BIT_FIELD (1ULL << 28) /* supports bit fields */
|
#define HA_CAN_BIT_FIELD (1ULL << 28) /* supports bit fields */
|
||||||
#define HA_NEED_READ_RANGE_BUFFER (1ULL << 29) /* for read_multi_range */
|
#define HA_NEED_READ_RANGE_BUFFER (1ULL << 29) /* for read_multi_range */
|
||||||
#define HA_ANY_INDEX_MAY_BE_UNIQUE (1ULL << 30)
|
#define HA_ANY_INDEX_MAY_BE_UNIQUE (1ULL << 30)
|
||||||
|
@ -622,16 +622,14 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
|
|||||||
|
|
||||||
/*
|
/*
|
||||||
Close all instances of the table to allow MyISAM "repair"
|
Close all instances of the table to allow MyISAM "repair"
|
||||||
to rename files.
|
(which is internally also used from "optimize") to rename files.
|
||||||
@todo: This code does not close all instances of the table.
|
@todo: This code does not close all instances of the table.
|
||||||
It only closes instances in other connections, but if this
|
It only closes instances in other connections, but if this
|
||||||
connection has LOCK TABLE t1 a READ, t1 b WRITE,
|
connection has LOCK TABLE t1 a READ, t1 b WRITE,
|
||||||
both t1 instances will be kept open.
|
both t1 instances will be kept open.
|
||||||
There is no need to execute this branch for InnoDB, which does
|
There is no need to execute this branch for InnoDB, which does
|
||||||
repair by recreate. There is no need to do it for OPTIMIZE,
|
repair by recreate.
|
||||||
which doesn't move files around.
|
Hence, this code should be executed only for MyISAM engine.
|
||||||
Hence, this code should be moved to prepare_for_repair(),
|
|
||||||
and executed only for MyISAM engine.
|
|
||||||
*/
|
*/
|
||||||
if (lock_type == TL_WRITE && !table->table->s->tmp_table)
|
if (lock_type == TL_WRITE && !table->table->s->tmp_table)
|
||||||
{
|
{
|
||||||
|
Reference in New Issue
Block a user