Question

如何在SQL中查找表的大小？

Answer 1

SQL Server： -

sp_spaceused 'TableName'

或在管理工作室： 右键单击表格 - ＆gt;属性 - ＆gt;存储

MySQL的： -

SELECT table_schema, table_name, data_length, index_length FROM information_schema.tables

的Sybase： -

sp_spaceused 'TableName'

甲骨文： - how-do-i-calculate-tables-size-in-oracle

Answer 2

结合ratty和Haim的帖子（包括评论）的答案我已经想出了这个，对于SQL Server来说，到目前为止似乎是最优雅的：

-- DROP TABLE #tmpTableSizes
CREATE TABLE #tmpTableSizes
(
    tableName varchar(100),
    numberofRows varchar(100),
    reservedSize varchar(50),
    dataSize varchar(50),
    indexSize varchar(50),
    unusedSize varchar(50)
)
insert #tmpTableSizes
EXEC sp_MSforeachtable @command1="EXEC sp_spaceused '?'"


select  * from #tmpTableSizes
order by cast(LEFT(reservedSize, LEN(reservedSize) - 4) as int)  desc

这将按照保留大小的顺序为您提供所有表的列表，从最大到最小排序。

Answer 3

SQL Server提供了一个内置的存储过程，您可以运行该过程以轻松显示表的大小，包括索引的大小

sp_spaceused ‘Tablename’

Answer 4

查询（修改https://stackoverflow.com/a/7892349/1737819）以查找以GB为单位的自定义名称表大小。您可以尝试这样做，将“YourTableName”替换为您的表名。

SELECT 
    t.NAME AS TableName,    
    p.rows AS RowCounts,
    CONVERT(DECIMAL,SUM(a.total_pages)) * 8 / 1024 / 1024 AS TotalSpaceGB, 
    SUM(a.used_pages)  * 8 / 1024 / 1024 AS UsedSpaceGB , 
    (SUM(a.total_pages) - SUM(a.used_pages)) * 8 / 1024 / 1024 AS UnusedSpaceGB
FROM 
    sys.tables t
INNER JOIN      
    sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN 
    sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN 
    sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN 
    sys.schemas s ON t.schema_id = s.schema_id
WHERE 
    t.NAME = 'YourTable'
    AND t.is_ms_shipped = 0
    AND i.OBJECT_ID > 255 
GROUP BY 
    t.Name, s.Name, p.Rows
ORDER BY 
    UsedSpaceGB DESC, t.Name

Answer 5

SQL Server提供了一个内置的存储过程，您可以运行该过程以轻松显示表的大小，包括索引的大小......这可能会让您感到惊讶。

语法：

 sp_spaceused ‘Tablename’

见：

http://www.howtogeek.com/howto/database/determine-size-of-a-table-in-sql-server/

Answer 6

你是按尺寸表示表格中的记录数量吗？在那种情况下：

SELECT COUNT(*) FROM your_table_name

Answer 7

我知道在SQL 2012中（可能在其他版本中有效），您可以执行以下操作：

右键单击对象资源管理器中的数据库名称。
选择报告＆gt;标准报告＆gt; Top Table的磁盘使用情况。

这将为您提供前1000个表的列表，然后您可以按数据大小等订购它。

Answer 8

在PostgreSQL中：

SELECT pg_size_pretty(pg_relation_size('tablename'));

Answer 9

如果你只是想找到最大的表，这是一个简单的查询。

  -- Find largest table partitions
 SELECT top 20 obj.name, LTRIM (STR ( sz.in_row_data_page_count * 8, 15, 0) + ' KB') as Size, * FROM sys.dm_db_partition_stats sz
inner join sys.objects obj on obj.object_id = sz.object_id
  order by sz.in_row_data_page_count desc

Answer 10

你可以在另一个帖子中引用Marc_s的回答，非常有用。

Get size of all tables in database

Answer 11

SQL Server，所有表的格式都很好，以KB / MB为单位：

SELECT 
    t.NAME AS TableName,
    s.Name AS SchemaName,
    p.rows AS RowCounts,
    SUM(a.total_pages) * 8 AS TotalSpaceKB, 
    CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS TotalSpaceMB,
    SUM(a.used_pages) * 8 AS UsedSpaceKB, 
    CAST(ROUND(((SUM(a.used_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS UsedSpaceMB, 
    (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB,
    CAST(ROUND(((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024.00, 2) AS NUMERIC(36, 2)) AS UnusedSpaceMB
FROM 
    sys.tables t
INNER JOIN      
    sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN 
    sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN 
    sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN 
    sys.schemas s ON t.schema_id = s.schema_id
WHERE 
    t.NAME NOT LIKE 'dt%' 
    AND t.is_ms_shipped = 0
    AND i.OBJECT_ID > 255 
GROUP BY 
    t.Name, s.Name, p.Rows
ORDER BY 
    t.Name

如何在SQL中查找表的大小？

11 个答案: