#!/usr/bin/env bash

CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
. $CURDIR/../shell_config.sh

. $CURDIR/mergetree_mutations.lib


${CLICKHOUSE_CLIENT} --query="DROP TABLE IF EXISTS table_with_empty_part"

${CLICKHOUSE_CLIENT} --query="CREATE TABLE table_with_empty_part
(
    id UInt64,
    value UInt64
)
ENGINE = MergeTree()
ORDER BY id
PARTITION BY id
SETTINGS vertical_merge_algorithm_min_rows_to_activate=0, vertical_merge_algorithm_min_columns_to_activate=0
"


${CLICKHOUSE_CLIENT} --query="INSERT INTO table_with_empty_part VALUES (1, 1)"

${CLICKHOUSE_CLIENT} --query="INSERT INTO table_with_empty_part VALUES (2, 2)"

${CLICKHOUSE_CLIENT} --query="ALTER TABLE table_with_empty_part DELETE WHERE id % 2 == 0"

sleep 0.5

mutation_id=`${CLICKHOUSE_CLIENT} --query="SELECT max(mutation_id) FROM system.mutations WHERE table='table_with_empty_part'"`

wait_for_mutation "table_with_empty_part" "$mutation_id"

${CLICKHOUSE_CLIENT} --query="SELECT COUNT(DISTINCT value) FROM table_with_empty_part"

${CLICKHOUSE_CLIENT} --query="ALTER TABLE table_with_empty_part MODIFY COLUMN value Nullable(UInt64)"

${CLICKHOUSE_CLIENT} --query="SELECT COUNT(distinct value) FROM table_with_empty_part"

${CLICKHOUSE_CLIENT} --query="OPTIMIZE TABLE table_with_empty_part FINAL"

${CLICKHOUSE_CLIENT} --query="DROP TABLE IF EXISTS table_with_empty_part"