48 lines
1.6 KiB
Markdown
48 lines
1.6 KiB
Markdown
---
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{
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"title": "SHOW DATA",
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"language": "zh-CN"
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}
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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# SHOW DATA
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## description
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该语句用于展示数据量和副本数量
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语法：
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SHOW DATA [FROM db_name[.table_name]];
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说明：
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1. 如果不指定 FROM 子句，使用展示当前 db 下细分到各个 table 的数据量和副本数量
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2. 如果指定 FROM 子句，则展示 table 下细分到各个 index 的数据量和副本数量
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3. 如果想查看各个 Partition 的大小，请参阅 help show partitions
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## example
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1. 展示默认 db 的各个 table 的数据量，副本数量，汇总数据量和汇总副本数量。
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SHOW DATA;
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2. 展示指定 db 的下指定表的细分数据量和副本数量
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SHOW DATA FROM example_db.table_name;
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## keyword
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SHOW,DATA
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