Storage engine-one of the storage structures: Row

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Weekly movie recommendation: small age: Describes the emotions and survival problems faced by four girls entering the society. Playback address: In SQLServer, data is stored by record row, and each row contains all columns of data. Such storage is very advantageous for data query, this is also the case where the LOB page, row overflow page, and table structure modification are all

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Age of small: Describes the emotions, website space, and survival problems faced by four girls entering the society. Playback address:

In SQLServer, data is stored by record rows. On the Hong Kong server, each row contains all columns of data. Such storage is very advantageous for data query, hong Kong server rent,
However, because of this, LOB pages, row overflow pages, and table structure modifications are prone to holes, forming disk fragments.

Let's take an example:
Test scope-> NO clustered index, no non-clustered index, heap containing fixed-length and variable-length columns

Create table t_test (col1 int, col2 varchar (10), col3 datetime, col4 char (10), col5 nvarchar (4) t_test, N), N) t_testDBCC IND (test, t_test, 1) dbcc traceon (3604), 1)
/*

Slot 0, Offset 0x60, Length 44, DumpStyle BYTE

Record Type = PRIMARY_RECORD Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
Record Size = 44
Memory Dump @ 0x000000000FFEA060

0000000000000000: 30001a00 01000000 00000000 3a9d0000 00000 ...........:...
0000000000000010: 31323320 20202020 20200500 00020026 million 123 .....&
0000000000000020: 002c0041 42436100 62006300 million rows were too large and too large.,. ABCa. B .c.
*/