fix(query): SET_VAR hint write into the shared query_settings (#19663)

Author: TCeason

src/query/sql/src/planner/binder/binder.rs

@@ -948,7 +948,7 @@ impl Binder {
         }
 
         self.ctx
-            .get_settings()
+            .get_shared_settings()
             .set_batch_settings(&hint_settings, true)
     }
 

tests/sqllogictests/suites/http_handler/session/set.test

@@ -165,3 +165,15 @@ query ??
 select value=default, level from system.settings where name='max_threads';
 ----
 1 DEFAULT
+
+## Test SET_VAR hint should behave the same as SETTINGS clause
+
+query TT
+select /*+SET_VAR(max_threads=100) */ value, level from system.settings where name='max_threads';
+----
+100 SESSION
+
+query ??
+select value=default, level from system.settings where name='max_threads';
+----
+1 DEFAULT

tests/suites/0_stateless/05_hints/05_0001_set_var.result

@@ -18,10 +18,10 @@ storage_read_buffer_size	1048576
 3
 2
 4
-America/Toronto
+Asia/Shanghai
 America/Toronto
 1
 2022-02-02 03:00:00.000000
-2022-02-02 03:00:00.000000
+2022-02-01 14:00:00.000000
 1	13
 Asia/Shanghai

tests/suites/1_stateful/00_stage/00_0017_copy_into_parquet.result

@@ -3,7 +3,7 @@
 1
 2
 1
-1
+4
 4
 >>>> remove @s1;
 >>>> select count() from @s1 where a >= 0 and b <= 1000;

tests/suites/1_stateful/00_stage/00_0017_copy_into_parquet.sh

@@ -28,12 +28,11 @@ run_copy_count "copy /*+ set_var(max_threads=1) */ into @s1/ from (select * from
 # one file
 run_copy_count "copy /*+ set_var(max_threads=1) */ into @s1/ from (select * from numbers(${HEAVY_ROW_COUNT})) max_file_size=${SMALL_FILE_SIZE} detailed_output=true;"
 
-# one files, limit threads by memory
+# four files, limit threads by memory
 run_copy_count "copy /*+ set_var(max_threads=4) set_var(max_memory_usage=${MEMORY_LIMIT}) */ into @s1/ from (select * from numbers(${HEAVY_ROW_COUNT})) max_file_size=${SMALL_FILE_SIZE} detailed_output=true;"
 
 # two files, limit threads by memory
-# copy /*+ set_var(max_threads=4) set_var(max_memory_usage=256000000) */ not working in cluster mode
-run_copy_count "set max_threads=4; set max_memory_usage=${MEMORY_LIMIT_HEAVY}; copy /*+ set_var(max_threads=4) set_var(max_memory_usage=${MEMORY_LIMIT_HEAVY}) */ into @s1/ from (select * from numbers(${HEAVY_ROW_COUNT})) max_file_size=${SMALL_FILE_SIZE} detailed_output=true;"
+run_copy_count "copy /*+ set_var(max_threads=4) set_var(max_memory_usage=${MEMORY_LIMIT_HEAVY}) */ into @s1/ from (select * from numbers(${HEAVY_ROW_COUNT})) max_file_size=${SMALL_FILE_SIZE} detailed_output=true;"
 
 stmt "remove @s1;"