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108 lines
4.6 KiB
SQL
108 lines
4.6 KiB
SQL
-- { echoOn }
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set enable_analyzer=1;
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SYSTEM STOP MERGES tbl;
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-- simple test case
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create table if not exists replacing_mt (x String) engine=ReplacingMergeTree() ORDER BY x;
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insert into replacing_mt values ('abc');
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insert into replacing_mt values ('abc');
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-- expected output is 2 because final is turned off
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select count() from replacing_mt;
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set final = 1;
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-- expected output is 1 because final is turned on
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select count() from replacing_mt;
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-- JOIN test cases
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create table if not exists lhs (x String) engine=ReplacingMergeTree() ORDER BY x;
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create table if not exists rhs (x String) engine=ReplacingMergeTree() ORDER BY x;
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insert into lhs values ('abc');
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insert into lhs values ('abc');
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insert into rhs values ('abc');
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insert into rhs values ('abc');
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set final = 0;
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-- expected output is 4 because select_final == 0
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select count() from lhs inner join rhs on lhs.x = rhs.x;
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set final = 1;
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-- expected output is 1 because final == 1
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select count() from lhs inner join rhs on lhs.x = rhs.x;
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-- regular non final table
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set final = 1;
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create table if not exists regular_mt_table (x String) engine=MergeTree() ORDER BY x;
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insert into regular_mt_table values ('abc');
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insert into regular_mt_table values ('abc');
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-- expected output is 2, it should silently ignore final modifier
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select count() from regular_mt_table;
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-- view test
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create materialized VIEW mv_regular_mt_table TO regular_mt_table AS SELECT * FROM regular_mt_table;
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create view nv_regular_mt_table AS SELECT * FROM mv_regular_mt_table;
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set final=1;
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select count() from nv_regular_mt_table;
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-- join on mix of tables that support / do not support select final with explain
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create table if not exists left_table (id UInt64, val_left String) engine=ReplacingMergeTree() ORDER BY id;
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create table if not exists middle_table (id UInt64, val_middle String) engine=MergeTree() ORDER BY id;
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create table if not exists right_table (id UInt64, val_right String) engine=ReplacingMergeTree() ORDER BY id;
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insert into left_table values (1,'a');
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insert into left_table values (1,'b');
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insert into left_table values (1,'c');
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insert into middle_table values (1,'a');
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insert into middle_table values (1,'b');
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insert into right_table values (1,'a');
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insert into right_table values (1,'b');
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insert into right_table values (1,'c');
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-- expected output
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-- 1 c a c
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-- 1 c b c
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select left_table.id,val_left, val_middle, val_right from left_table
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inner join middle_table on left_table.id = middle_table.id
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inner join right_table on middle_table.id = right_table.id
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ORDER BY left_table.id, val_left, val_middle, val_right;
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explain syntax select left_table.id,val_left, val_middle, val_right from left_table
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inner join middle_table on left_table.id = middle_table.id
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inner join right_table on middle_table.id = right_table.id
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ORDER BY left_table.id, val_left, val_middle, val_right;
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-- extra: same with subquery
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select left_table.id,val_left, val_middle, val_right from left_table
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inner join middle_table on left_table.id = middle_table.id
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inner join (SELECT * FROM right_table WHERE id = 1) r on middle_table.id = r.id
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ORDER BY left_table.id, val_left, val_middle, val_right;
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-- Quite exotic with Merge engine
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DROP TABLE IF EXISTS table_to_merge_a;
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DROP TABLE IF EXISTS table_to_merge_b;
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DROP TABLE IF EXISTS table_to_merge_c;
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DROP TABLE IF EXISTS merge_table;
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create table if not exists table_to_merge_a (id UInt64, val String) engine=ReplacingMergeTree() ORDER BY id;
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create table if not exists table_to_merge_b (id UInt64, val String) engine=MergeTree() ORDER BY id;
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create table if not exists table_to_merge_c (id UInt64, val String) engine=ReplacingMergeTree() ORDER BY id;
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CREATE TABLE merge_table Engine=Merge(currentDatabase(), '^(table_to_merge_[a-z])$') AS table_to_merge_a;
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insert into table_to_merge_a values (1,'a');
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insert into table_to_merge_a values (1,'b');
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insert into table_to_merge_a values (1,'c');
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insert into table_to_merge_b values (2,'a');
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insert into table_to_merge_b values (2,'b');
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insert into table_to_merge_c values (3,'a');
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insert into table_to_merge_c values (3,'b');
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insert into table_to_merge_c values (3,'c');
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-- expected output:
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-- 1 c, 2 a, 2 b, 3 c
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SELECT * FROM merge_table ORDER BY id, val;
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select sum(number) from numbers(10) settings final=1;
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select sum(number) from remote('127.0.0.{1,2}', numbers(10)) settings final=1;
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