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# name: test/sql/parallelism/interquery/concurrent_append_transactional.test_slow
# description: Test concurrent appends and transaction isolation
# group: [interquery]
statement ok
CREATE TABLE strings(s VARCHAR);
concurrentloop threadid 0 10
# threads 0-1
onlyif threadid>1
statement ok
SELECT sleep_ms((random() * 100)::BIGINT);
onlyif threadid>1
statement ok
BEGIN TRANSACTION
onlyif threadid>1
statement ok
SET VARIABLE initial_count=(SELECT COUNT(*) FROM strings);
loop i 0 1000
statement ok
INSERT INTO strings VALUES ('my favorite string value')
onlyif threadid>1
query I
SELECT CASE
WHEN COUNT(*)=(getvariable('initial_count') + ${i} + 1)
THEN NULL
ELSE {'count': COUNT(*), 'initial_count': getvariable('initial_count')}
END
FROM strings
----
NULL
endloop
onlyif threadid>1
statement ok
COMMIT
endloop
query II
SELECT COUNT(*), SUM(strlen(s)) FROM strings
----
10000 240000
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