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Merge pull request #6934 from abyss7/CLICKHOUSE-4643

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Name temporary external table with existing subquery alias
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alexey-milovidov 2019-09-15 09:46:10 +03:00 committed by GitHub
commit 831eebe4dc
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3 changed files with 27 additions and 4 deletions
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12
dbms/src/Interpreters/GlobalSubqueriesVisitor.h
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@ -78,12 +78,16 @@ public:
return;
}
/// Generate the name for the external table.
String external_table_name = "_data" + toString(external_table_id);
while (external_tables.count(external_table_name))
String external_table_name = subquery_or_table_name->tryGetAlias();
if (external_table_name.empty())
{
++external_table_id;
/// Generate the name for the external table.
external_table_name = "_data" + toString(external_table_id);
while (external_tables.count(external_table_name))
{
++external_table_id;
external_table_name = "_data" + toString(external_table_id);
}
}
auto interpreter = interpretSubquery(subquery_or_table_name, context, subquery_depth, {});

0
dbms/tests/queries/0_stateless/01009_global_array_join_names.reference Normal file
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19
dbms/tests/queries/0_stateless/01009_global_array_join_names.sql Normal file
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@ -0,0 +1,19 @@
DROP TABLE IF EXISTS test1;
DROP TABLE IF EXISTS test2;
CREATE TABLE test1 (a UInt8, b Array(DateTime)) ENGINE Memory;
CREATE TABLE test2 as test1 ENGINE Distributed(test_shard_localhost, currentDatabase(), test1);
INSERT INTO test1 VALUES (1, [1, 2, 3]);
SELECT 1
FROM test2 AS test2
ARRAY JOIN arrayFilter(t -> (t GLOBAL IN
(
SELECT DISTINCT now() AS `ym:a`
WHERE 1
)), test2.b) AS test2_b
WHERE 1;
DROP TABLE test1;
DROP TABLE test2;