2020-06-22 09:09:23 +00:00
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#!/usr/bin/env bash
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CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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2020-08-01 00:51:12 +00:00
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. "$CURDIR"/../shell_config.sh
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2020-06-22 09:09:23 +00:00
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$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS alter_mt"
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$CLICKHOUSE_CLIENT --query "CREATE TABLE alter_mt (key UInt64, value String) ENGINE=MergeTree() ORDER BY key"
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$CLICKHOUSE_CLIENT --query "INSERT INTO alter_mt SELECT number, toString(number) FROM numbers(5)"
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$CLICKHOUSE_CLIENT --query "SELECT count(distinct concat(value, '_')) FROM alter_mt WHERE not sleepEachRow(2)" &
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# to be sure that select took all required locks
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sleep 2
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$CLICKHOUSE_CLIENT --query "ALTER TABLE alter_mt MODIFY COLUMN value UInt64"
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$CLICKHOUSE_CLIENT --query "SELECT sum(value) FROM alter_mt"
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wait
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$CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE alter_mt"
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$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS alter_mt"
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