thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 15:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #55373 from lingtaolf/enhancement/rename_without_keyword

Browse Source 
Support rename table without keyword TABLE
This commit is contained in:
János Benjamin Antal 2023-10-16 14:06:23 +02:00 committed by GitHub
commit eeff98f3a3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 70 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
docs/en/sql-reference/statements/rename.md
View File

@ -16,7 +16,7 @@ The `RENAME` query is supported by the [Atomic](../../engines/database-engines/a
**Syntax**
```sql
RENAME DATABASE|TABLE|DICTIONARY name TO new_name [,...] [ON CLUSTER cluster]
RENAME [DATABASE|TABLE|DICTIONARY] name TO new_name [,...] [ON CLUSTER cluster]
```
## RENAME DATABASE
@ -48,6 +48,11 @@ RENAME TABLE [db1.]name1 TO [db2.]name2 [,...] [ON CLUSTER cluster]
RENAME TABLE table_A TO table_A_bak, table_B TO table_B_bak;
```
And you can use a simpler sql:
```sql
RENAME table_A TO table_A_bak, table_B TO table_B_bak;
```
## RENAME DICTIONARY
Renames one or several dictionaries. This query can be used to move dictionaries between databases.

27
src/Parsers/ParserRenameQuery.cpp
View File

@ -11,6 +11,7 @@ namespace DB
bool ParserRenameQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
{
ParserKeyword s_rename("RENAME");
ParserKeyword s_rename_table("RENAME TABLE");
ParserKeyword s_exchange_tables("EXCHANGE TABLES");
ParserKeyword s_rename_dictionary("RENAME DICTIONARY");
@ -24,18 +25,7 @@ bool ParserRenameQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
bool exchange = false;
bool dictionary = false;
if (s_rename_table.ignore(pos, expected))
;
else if (s_exchange_tables.ignore(pos, expected))
exchange = true;
else if (s_rename_dictionary.ignore(pos, expected))
dictionary = true;
else if (s_exchange_dictionaries.ignore(pos, expected))
{
exchange = true;
dictionary = true;
}
else if (s_rename_database.ignore(pos, expected))
if (s_rename_database.ignore(pos, expected))
{
ASTPtr from_db;
ASTPtr to_db;
@ -67,6 +57,19 @@ bool ParserRenameQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
node = query;
return true;
}
else if (s_rename_table.ignore(pos, expected))
;
else if (s_exchange_tables.ignore(pos, expected))
exchange = true;
else if (s_rename_dictionary.ignore(pos, expected))
dictionary = true;
else if (s_exchange_dictionaries.ignore(pos, expected))
{
exchange = true;
dictionary = true;
}
else if (s_rename.ignore(pos, expected))
;
else
return false;

7
tests/queries/0_stateless/02891_rename_table_without_keyword.reference Normal file
View File

@ -0,0 +1,7 @@
r1
r1_bak
r1
r1_bak
r2_bak
test_dictionary
test_dictionary_2

42
tests/queries/0_stateless/02891_rename_table_without_keyword.sql Normal file
View File

@ -0,0 +1,42 @@
DROP DATABASE IF EXISTS {CLICKHOUSE_DATABASE:Identifier};
CREATE DATABASE IF NOT EXISTS {CLICKHOUSE_DATABASE:Identifier};
CREATE TABLE IF NOT EXISTS {CLICKHOUSE_DATABASE:Identifier}.r1 (name String) Engine=Memory();
SHOW TABLES FROM {CLICKHOUSE_DATABASE:Identifier};
RENAME TABLE {CLICKHOUSE_DATABASE:Identifier}.r1 TO {CLICKHOUSE_DATABASE:Identifier}.r1_bak;
SHOW TABLES FROM {CLICKHOUSE_DATABASE:Identifier};
RENAME {CLICKHOUSE_DATABASE:Identifier}.r1_bak TO {CLICKHOUSE_DATABASE:Identifier}.r1;
SHOW TABLES FROM {CLICKHOUSE_DATABASE:Identifier};
CREATE TABLE IF NOT EXISTS {CLICKHOUSE_DATABASE:Identifier}.r2 (name String) Engine=Memory();
RENAME {CLICKHOUSE_DATABASE:Identifier}.r1 TO {CLICKHOUSE_DATABASE:Identifier}.r1_bak,
{CLICKHOUSE_DATABASE:Identifier}.r2 TO {CLICKHOUSE_DATABASE:Identifier}.r2_bak;
SHOW TABLES FROM {CLICKHOUSE_DATABASE:Identifier};
CREATE TABLE IF NOT EXISTS {CLICKHOUSE_DATABASE:Identifier}.source_table (
id UInt64,
value String
) ENGINE = Memory;
CREATE DICTIONARY IF NOT EXISTS {CLICKHOUSE_DATABASE:Identifier}.test_dictionary
(
id UInt64,
value String
)
PRIMARY KEY id
SOURCE(CLICKHOUSE(TABLE '{CLICKHOUSE_DATABASE:String}.dictionary_table'))
LAYOUT(FLAT())
LIFETIME(MIN 0 MAX 1000);
SHOW DICTIONARIES FROM {CLICKHOUSE_DATABASE:Identifier};
RENAME {CLICKHOUSE_DATABASE:Identifier}.test_dictionary TO {CLICKHOUSE_DATABASE:Identifier}.test_dictionary_2;
SHOW DICTIONARIES FROM {CLICKHOUSE_DATABASE:Identifier};
SHOW DATABASES LIKE '{CLICKHOUSE_DATABASE:String}';
RENAME {CLICKHOUSE_DATABASE:Identifier} TO {CLICKHOUSE_DATABASE_1:Identifier}; -- { serverError UNKNOWN_TABLE }
SHOW DATABASES LIKE '{CLICKHOUSE_DATABASE:String}';
DROP DATABASE IF EXISTS {CLICKHOUSE_DATABASE:Identifier};