Remove DROP TABEL system.query_log from tests

This is a very ugly hack that breaks artifacts, since after this
query_log is incomplete in artifacts.

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>

tests/queries/0_stateless/02494_query_cache_case_agnostic_matching.sql

@@ -1,9 +1,8 @@
 -- Tags: no-parallel
 -- Tag no-parallel: Messes with internal cache
 
--- Start with empty query cache (QC) and query log
+-- Start with empty query cache (QC)
 SYSTEM DROP QUERY CACHE;
-DROP TABLE system.query_log SYNC;
 
 -- Insert an entry into the query cache.
 SELECT 1 SETTINGS use_query_cache = true;
@@ -22,6 +21,7 @@ SYSTEM FLUSH LOGS;
 SELECT ProfileEvents['QueryCacheHits'], ProfileEvents['QueryCacheMisses']
 FROM system.query_log
 WHERE type = 'QueryFinish'
+  AND current_database = currentDatabase()
   AND query = 'select 1 SETTINGS use_query_cache = true;';
 
 SYSTEM DROP QUERY CACHE;

tests/queries/0_stateless/02494_query_cache_events.reference

@@ -3,4 +3,5 @@
 0	1
 ---
 1
+0	1
 1	0

tests/queries/0_stateless/02494_query_cache_events.sql

@@ -1,9 +1,8 @@
 -- Tags: no-parallel
 -- Tag no-parallel: Messes with internal cache
 
--- Start with empty query cache QC and query log
+-- Start with empty query cache QC
 SYSTEM DROP QUERY CACHE;
-DROP TABLE system.query_log SYNC;
 
 -- Run a query with QC on. The first execution is a QC miss.
 SELECT '---';
@@ -13,6 +12,7 @@ SYSTEM FLUSH LOGS;
 SELECT ProfileEvents['QueryCacheHits'], ProfileEvents['QueryCacheMisses']
 FROM system.query_log
 WHERE type = 'QueryFinish'
+  AND current_database = currentDatabase()
   AND query = 'SELECT 1 SETTINGS use_query_cache = true;';
 
 
@@ -20,11 +20,12 @@ WHERE type = 'QueryFinish'
 SELECT '---';
 SELECT 1 SETTINGS use_query_cache = true;
 
-DROP TABLE system.query_log SYNC;
 SYSTEM FLUSH LOGS;
 SELECT ProfileEvents['QueryCacheHits'], ProfileEvents['QueryCacheMisses']
 FROM system.query_log
 WHERE type = 'QueryFinish'
-  AND query = 'SELECT 1 SETTINGS use_query_cache = true;';
+  AND current_database = currentDatabase()
+  AND query = 'SELECT 1 SETTINGS use_query_cache = true;'
+ORDER BY event_time_microseconds;
 
 SYSTEM DROP QUERY CACHE;

tests/queries/0_stateless/02494_query_cache_normalize_ast.sql

@@ -1,9 +1,8 @@
 -- Tags: no-parallel
 -- Tag no-parallel: Messes with internal cache
 
--- Start with empty query cache (QC) and query log.
+-- Start with empty query cache (QC)
 SYSTEM DROP QUERY CACHE;
-DROP TABLE system.query_log SYNC;
 
 -- Run query whose result gets cached in the query cache.
 -- Besides "use_query_cache", pass two more knobs (one QC-specific knob and one non-QC-specific knob). We just care
@@ -24,6 +23,7 @@ SYSTEM FLUSH LOGS;
 SELECT ProfileEvents['QueryCacheHits'], ProfileEvents['QueryCacheMisses']
 FROM system.query_log
 WHERE type = 'QueryFinish'
+  AND current_database = currentDatabase()
   AND query = 'SELECT 1 SETTINGS use_query_cache = true, enable_writes_to_query_cache = false, max_threads = 16;';
 
 SYSTEM DROP QUERY CACHE;

tests/queries/0_stateless/02494_query_cache_passive_usage.reference

@@ -9,4 +9,5 @@
 -----
 1
 1
+0	1
 1	0

tests/queries/0_stateless/02494_query_cache_passive_usage.sql

@@ -22,10 +22,7 @@ SELECT COUNT(*) FROM system.query_cache;
 
 SELECT '-----';
 
--- Run same query with passive mode again. There must still be one entry in the QC and we must have a QC hit.
+/* Run same query with passive mode again. There must still be one entry in the QC and we must have a QC hit. */
-
--- Get rid of log of previous SELECT
-DROP TABLE system.query_log SYNC;
 
 SELECT 1 SETTINGS use_query_cache = true, enable_writes_to_query_cache = false;
 SELECT COUNT(*) FROM system.query_cache;
@@ -34,6 +31,9 @@ SYSTEM FLUSH LOGS;
 SELECT ProfileEvents['QueryCacheHits'], ProfileEvents['QueryCacheMisses']
 FROM system.query_log
 WHERE type = 'QueryFinish'
-  AND query = 'SELECT 1 SETTINGS use_query_cache = true, enable_writes_to_query_cache = false;';
+  AND current_database = currentDatabase()
+  /* NOTE: client incorrectly join comments from the previous line into query, hence LIKE */
+  AND query LIKE '%\nSELECT 1 SETTINGS use_query_cache = true, enable_writes_to_query_cache = false;'
+ORDER BY event_time_microseconds;
 
 SYSTEM DROP QUERY CACHE;