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MDEV-22165 CONVERT TABLE: move in partition from existing table

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Syntax for CONVERT TABLE

ALTER TABLE tbl_name CONVERT TABLE tbl_name TO PARTITION partition_name partition_spec

Examples:

    ALTER TABLE t1 CONVERT TABLE tp2 TO PARTITION p2 VALUES LESS THAN MAX_VALUE();

New ALTER_PARTITION_CONVERT_IN command for
fast_alter_partition_table() is done in alter_partition_convert_in()
function which basically does ha_rename_table().

Table structure and data check is basically the same as in EXCHANGE
PARTITION command. And these are done by
compare_table_with_partition() and check_table_data().

Atomic DDL is done by the scheme from MDEV-22166 (see the
corresponding commit message). The only differnce is that it also has
to drop source table frm and that is done by WFRM_DROP_CONVERTED_FROM.

Initial patch was done by Dmitry Shulga <dmitry.shulga@mariadb.com>
This commit is contained in:
Aleksey Midenkov
2021-09-28 12:40:06 +03:00
committed by Sergei Golubchik
parent 7da721be31
commit 69724805bc
17 changed files with 2410 additions and 325 deletions
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5
sql/sql_partition.h
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@ -279,11 +279,16 @@ bool verify_data_with_partition(TABLE *table, TABLE *part_table,
uint32 part_id);
bool compare_partition_options(HA_CREATE_INFO *table_create_info,
partition_element *part_elem);
bool compare_table_with_partition(THD *thd, TABLE *table,
TABLE *part_table,
partition_element *part_elem,
uint part_id);
bool partition_key_modified(TABLE *table, const MY_BITMAP *fields);
bool write_log_replace_frm(ALTER_PARTITION_PARAM_TYPE *lpt,
uint next_entry,
const char *from_path,
const char *to_path);
#else
#define partition_key_modified(X,Y) 0
#endif