ClickHouse/tests/queries/0_stateless/01161_all_system_tables.sh

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#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
THREADS=8
RAND=$(($RANDOM))
LIMIT=10000
function run_selects()
{
thread_num=$1
readarray -t tables_arr < <(${CLICKHOUSE_CLIENT} -q "SELECT database || '.' || name FROM system.tables
WHERE database in ('system', 'information_schema', 'INFORMATION_SCHEMA') and name!='zookeeper'
AND sipHash64(name || toString($RAND)) % $THREADS = $thread_num")
for t in "${tables_arr[@]}"
do
${CLICKHOUSE_CLIENT} -q "SELECT * FROM $t LIMIT $LIMIT FORMAT Null" # Suppress style check: database=$CLICKHOUSE_DATABASEs
done
}
for ((i=0; i<THREADS; i++)) do
run_selects "$i" &
done
wait