mirror of
https://github.com/ClickHouse/ClickHouse.git
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59 lines
2.3 KiB
Bash
Executable File
59 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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. $CURDIR/../shell_config.sh
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$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS table_for_rename_replicated"
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$CLICKHOUSE_CLIENT -n --query "
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CREATE TABLE table_for_rename_replicated
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(
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date Date,
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key UInt64,
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value1 String,
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value2 String,
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value3 String
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)
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ENGINE = ReplicatedMergeTree('/clickhouse/tables/table_for_rename_replicated', '1')
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PARTITION BY date
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ORDER BY key;
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"
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$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);"
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$CLICKHOUSE_CLIENT --query "SELECT value1 FROM table_for_rename_replicated WHERE key = 1;"
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$CLICKHOUSE_CLIENT --query "SYSTEM STOP MERGES table_for_rename_replicated;"
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$CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;"
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$CLICKHOUSE_CLIENT --query "ALTER TABLE table_for_rename_replicated RENAME COLUMN value1 to renamed_value1" --replication_alter_partitions_sync=0
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while [[ -z $($CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns WHERE name = 'renamed_value1' and table = 'table_for_rename_replicated'" 2>/dev/null) ]]; do
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sleep 0.5
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done
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$CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns WHERE name = 'renamed_value1' and table = 'table_for_rename_replicated'"
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# SHOW CREATE TABLE takes query from .sql file on disk.
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# 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.
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while [[ -z $($CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;" | grep 'renamed_value1') ]]; do
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sleep 0.5
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done
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$CLICKHOUSE_CLIENT --query "SHOW CREATE TABLE table_for_rename_replicated;"
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$CLICKHOUSE_CLIENT --query "SELECT renamed_value1 FROM table_for_rename_replicated WHERE key = 1;"
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$CLICKHOUSE_CLIENT --query "SELECT * FROM table_for_rename_replicated WHERE key = 1 FORMAT TSVWithNames;"
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$CLICKHOUSE_CLIENT --query "SYSTEM START MERGES table_for_rename_replicated;"
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$CLICKHOUSE_CLIENT --query "SYSTEM SYNC REPLICA table_for_rename_replicated;"
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$CLICKHOUSE_CLIENT --query "SELECT * FROM table_for_rename_replicated WHERE key = 1 FORMAT TSVWithNames;"
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$CLICKHOUSE_CLIENT --query "DROP TABLE IF EXISTS table_for_rename_replicated;"
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