mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 00:30:49 +00:00
95 lines
3.8 KiB
SQL
95 lines
3.8 KiB
SQL
-- Tags: no-ordinary-database
|
|
|
|
CREATE TABLE landing (n Int64) engine=MergeTree order by n;
|
|
CREATE TABLE target (n Int64) engine=MergeTree order by n;
|
|
CREATE MATERIALIZED VIEW landing_to_target TO target AS
|
|
SELECT n + throwIf(n == 3333)
|
|
FROM landing;
|
|
|
|
INSERT INTO landing SELECT * FROM numbers(10000); -- { serverError 395 }
|
|
SELECT 'no_transaction_landing', count() FROM landing;
|
|
SELECT 'no_transaction_target', count() FROM target;
|
|
|
|
TRUNCATE TABLE landing;
|
|
TRUNCATE TABLE target;
|
|
|
|
|
|
BEGIN TRANSACTION;
|
|
INSERT INTO landing SELECT * FROM numbers(10000); -- { serverError 395 }
|
|
ROLLBACK;
|
|
SELECT 'after_transaction_landing', count() FROM landing;
|
|
SELECT 'after_transaction_target', count() FROM target;
|
|
|
|
-- Same but using implicit_transaction
|
|
INSERT INTO landing SETTINGS implicit_transaction=True SELECT * FROM numbers(10000); -- { serverError 395 }
|
|
SELECT 'after_implicit_txn_in_query_settings_landing', count() FROM landing;
|
|
SELECT 'after_implicit_txn_in_query_settings_target', count() FROM target;
|
|
|
|
-- Same but using implicit_transaction in a session
|
|
SET implicit_transaction=True;
|
|
INSERT INTO landing SELECT * FROM numbers(10000); -- { serverError 395 }
|
|
SET implicit_transaction=False;
|
|
SELECT 'after_implicit_txn_in_session_landing', count() FROM landing;
|
|
SELECT 'after_implicit_txn_in_session_target', count() FROM target;
|
|
|
|
-- Reading from incompatible sources with implicit_transaction works the same way as with normal transactions:
|
|
-- Currently reading from system tables inside a transaction is Not implemented:
|
|
SELECT name, value, changed FROM system.settings where name = 'implicit_transaction' SETTINGS implicit_transaction=True; -- { serverError 48 }
|
|
|
|
|
|
-- Verify that you don't have to manually close transactions with implicit_transaction
|
|
SET implicit_transaction=True;
|
|
SELECT throwIf(number == 0) FROM numbers(100); -- { serverError 395 }
|
|
SELECT throwIf(number == 0) FROM numbers(100); -- { serverError 395 }
|
|
SELECT throwIf(number == 0) FROM numbers(100); -- { serverError 395 }
|
|
SELECT throwIf(number == 0) FROM numbers(100); -- { serverError 395 }
|
|
SET implicit_transaction=False;
|
|
|
|
-- implicit_transaction is ignored when inside a transaction (no recursive transaction error)
|
|
BEGIN TRANSACTION;
|
|
SELECT 'inside_txn_and_implicit', 1 SETTINGS implicit_transaction=True;
|
|
SELECT throwIf(number == 0) FROM numbers(100) SETTINGS implicit_transaction=True; -- { serverError 395 }
|
|
ROLLBACK;
|
|
|
|
SELECT 'inside_txn_and_implicit', 1 SETTINGS implicit_transaction=True;
|
|
|
|
-- You can work with transactions even if `implicit_transaction=True` is set
|
|
SET implicit_transaction=True;
|
|
BEGIN TRANSACTION;
|
|
INSERT INTO target SELECT * FROM numbers(10000);
|
|
SELECT 'in_transaction', count() FROM target;
|
|
ROLLBACK;
|
|
SELECT 'out_transaction', count() FROM target;
|
|
SET implicit_transaction=False;
|
|
|
|
|
|
-- Verify that the transaction_id column is populated correctly
|
|
SELECT 'Looking_at_transaction_id_True' FORMAT Null SETTINGS implicit_transaction=1;
|
|
-- Verify that the transaction_id column is NOT populated without transaction
|
|
SELECT 'Looking_at_transaction_id_False' FORMAT Null SETTINGS implicit_transaction=0;
|
|
SYSTEM FLUSH LOGS;
|
|
|
|
SELECT
|
|
'implicit_True',
|
|
count() as all,
|
|
transaction_id = (0,0,'00000000-0000-0000-0000-000000000000') as is_empty
|
|
FROM system.query_log
|
|
WHERE
|
|
current_database = currentDatabase() AND
|
|
event_date >= yesterday() AND
|
|
query LIKE '-- Verify that the transaction_id column is populated correctly%'
|
|
GROUP BY transaction_id
|
|
FORMAT JSONEachRow;
|
|
|
|
SELECT
|
|
'implicit_False',
|
|
count() as all,
|
|
transaction_id = (0,0,'00000000-0000-0000-0000-000000000000') as is_empty
|
|
FROM system.query_log
|
|
WHERE
|
|
current_database = currentDatabase() AND
|
|
event_date >= yesterday() AND
|
|
query LIKE '-- Verify that the transaction_id column is NOT populated without transaction%'
|
|
GROUP BY transaction_id
|
|
FORMAT JSONEachRow;
|