#!/usr/bin/env bash CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd) # shellcheck source=../shell_config.sh . "$CURDIR"/../shell_config.sh $CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS table_for_rename_replicated" $CLICKHOUSE_CLIENT -n --query " CREATE TABLE table_for_rename_replicated ( date Date, key UInt64, value1 String, value2 String, value3 String ) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test_01213/table_for_rename_replicated', '1') PARTITION BY date ORDER BY key; " $CLICKHOUSE_CLIENT --query "INSERT INTO table_for_rename_replicated SELECT toDate('2019-10-01') + number % 3, number, toString(number), toString(number), toString(number) from numbers(9);" $CLICKHOUSE_CLIENT --query "SELECT value1 FROM table_for_rename_replicated WHERE key = 1;" $CLICKHOUSE_CLIENT --query "SYSTEM STOP MERGES table_for_rename_replicated;" $CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;" $CLICKHOUSE_CLIENT --query "ALTER TABLE table_for_rename_replicated RENAME COLUMN value1 to renamed_value1" --replication_alter_partitions_sync=0 while [[ -z $($CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns WHERE name = 'renamed_value1' and table = 'table_for_rename_replicated'" 2>/dev/null) ]]; do sleep 0.5 done $CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns WHERE name = 'renamed_value1' and table = 'table_for_rename_replicated'" # SHOW CREATE TABLE takes query from .sql file on disk. # previous select take metadata from memory. So, when previous select says, that return renamed_value1 already exists in table, it's still can have old version on disk. while [[ -z $($CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;" | grep 'renamed_value1') ]]; do sleep 0.5 done $CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;" $CLICKHOUSE_CLIENT --query "SELECT renamed_value1 FROM table_for_rename_replicated WHERE key = 1;" $CLICKHOUSE_CLIENT --query "SELECT * FROM table_for_rename_replicated WHERE key = 1 FORMAT TSVWithNames;" $CLICKHOUSE_CLIENT --query "SYSTEM START MERGES table_for_rename_replicated;" $CLICKHOUSE_CLIENT --query "SYSTEM SYNC REPLICA table_for_rename_replicated;" $CLICKHOUSE_CLIENT --query "SELECT * FROM table_for_rename_replicated WHERE key = 1 FORMAT TSVWithNames;" $CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS table_for_rename_replicated;"