ClickHouse/tests/queries/0_stateless/03001_block_offset_column.sql.j2

{% for enable_vertical_merge_algorithm in [0, 1] -%}

DROP TABLE IF EXISTS t_block_offset;

CREATE TABLE t_block_offset (id UInt32, a UInt32) ENGINE = MergeTree
ORDER BY id
SETTINGS
    enable_block_number_column = 1,
    enable_block_offset_column = 1,
    index_granularity = 2,
    vertical_merge_algorithm_min_bytes_to_activate = 1,
    vertical_merge_algorithm_min_columns_to_activate = 1,
    enable_vertical_merge_algorithm = {{ enable_vertical_merge_algorithm }};

INSERT INTO t_block_offset(id,a) VALUES (1,1),(3,3),(4,4);
INSERT INTO t_block_offset(id,a) VALUES (2,2),(5,5),(6,6);

SELECT '*** BEFORE MUTATION BEFORE MERGE ***';
SELECT id,a,_block_number,_block_offset,_part from t_block_offset ORDER BY id;

set mutations_sync=1;
ALTER TABLE t_block_offset UPDATE a=0 WHERE id<4;

SELECT '*** AFTER MUTATION BEFORE MERGE ***';
SELECT id,a,_block_number,_block_offset,_part from t_block_offset ORDER BY id;

OPTIMIZE TABLE t_block_offset FINAL;

SELECT '*** AFTER MUTATION AFTER MERGE ***';
SELECT *,_block_number,_block_offset,_part from t_block_offset ORDER BY id;

INSERT INTO t_block_offset(id,a) VALUES (7,7),(8,8),(9,9);

SELECT '*** AFTER MUTATION AFTER MERGE , NEW BLOCK ***';
SELECT *,_block_number,_block_offset,_part from t_block_offset ORDER BY id;

OPTIMIZE TABLE t_block_offset FINAL;

SELECT '*** AFTER MUTATION AFTER MERGE , NEW BLOCK MERGED ***';
SELECT *,_block_number,_block_offset,_part from t_block_offset ORDER BY id;

DROP TABLE t_block_offset;

{% endfor %}