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[feature](information_schema)add metadata_name_ids for quickly get c… - #23980
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…tlogs,db,table and add profiling table in order to Compatible with mysql (apache#22702) add information_schema.metadata_name_idsfor quickly get catlogs,db,table. 1. table struct : ```mysql mysql> desc internal.information_schema.metadata_name_ids; +---------------+--------------+------+-------+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------------+--------------+------+-------+---------+-------+ | CATALOG_ID | BIGINT | Yes | false | NULL | | | CATALOG_NAME | VARCHAR(512) | Yes | false | NULL | | | DATABASE_ID | BIGINT | Yes | false | NULL | | | DATABASE_NAME | VARCHAR(64) | Yes | false | NULL | | | TABLE_ID | BIGINT | Yes | false | NULL | | | TABLE_NAME | VARCHAR(64) | Yes | false | NULL | | +---------------+--------------+------+-------+---------+-------+ 6 rows in set (0.00 sec) mysql> select * from internal.information_schema.metadata_name_ids where CATALOG_NAME="hive1" limit 1 \G; *************************** 1. row *************************** CATALOG_ID: 113008 CATALOG_NAME: hive1 DATABASE_ID: 113042 DATABASE_NAME: ssb1_parquet TABLE_ID: 114009 TABLE_NAME: dates 1 row in set (0.07 sec) ``` 2. when you create / drop catalog , need not refresh catalog . ```mysql mysql> select count(*) from internal.information_schema.metadata_name_ids\G; *************************** 1. row *************************** count(*): 21301 1 row in set (0.34 sec) mysql> drop catalog hive2; Query OK, 0 rows affected (0.01 sec) mysql> select count(*) from internal.information_schema.metadata_name_ids\G; *************************** 1. row *************************** count(*): 10665 1 row in set (0.04 sec) mysql> create catalog hive3 ... mysql> select count(*) from internal.information_schema.metadata_name_ids\G; *************************** 1. row *************************** count(*): 21301 1 row in set (0.32 sec) ``` 3. create / drop table , need not refresh catalog . ```mysql mysql> CREATE TABLE IF NOT EXISTS demo.example_tbl ... ; mysql> select count(*) from internal.information_schema.metadata_name_ids\G; *************************** 1. row *************************** count(*): 10666 1 row in set (0.04 sec) mysql> drop table demo.example_tbl; Query OK, 0 rows affected (0.01 sec) mysql> select count(*) from internal.information_schema.metadata_name_ids\G; *************************** 1. row *************************** count(*): 10665 1 row in set (0.04 sec) ``` 4. you can set query time , prevent queries from taking too long . ``` fe.conf : query_metadata_name_ids_timeout the time used to obtain all tables in one database ``` 5. add information_schema.profiling in order to Compatible with mysql ```mysql mysql> select * from information_schema.profiling; Empty set (0.07 sec) mysql> set profiling=1; Query OK, 0 rows affected (0.01 sec) ```
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clang-tidy review says "All clean, LGTM! 👍" |
Contributor
clang-tidy review says "All clean, LGTM! 👍" |
xiaokang added a commit
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Sep 6, 2023
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…atlogs,db,table and add profiling table in order to Compatible with mysql (#22702)
add information_schema.metadata_name_idsfor quickly get catlogs,db,table.
Proposed changes
Issue Number: close #xxx
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If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...