Explore n in char/varchar (n): number of characters or bytes, number of varchar bytes
[Problem source] When I display the database table designed, yu asked me, why is the top_info field of your top_info defined type varchar (100) 100, how many
Two bytes. if you write a number greater than 65535? Delphi/Windows SDK/API
Http://www.delphi2007.net/DelphiBase/html/delphi_20061220165725103.html
Under normal circumstances, FFFF is 65535. How can we break through it?
I can't break through. I
Oracle uses a variable-length storage method to store number data. Each number value is stored in the database in the form of scientific Notation: one byte is used to store the symbol index, up to 2
Oracle uses a variable-length storage method to
Oracle uses a variable-length storage method to store number data. Each number value is stored in the database in the form of scientific Notation: one byte is used to store the symbol/index, and up to 20 bytes are used to store the ending number.
I. program running platformThe number of bytes allocated for different data types varies on different platforms. My personal understanding of the platform is CPU + OS + compiler, because: 1. 64-bit machines can also be installed with 32-bit systems (
The is related to the machine word length and compiler: Therefore, the width of the int,long int,short int may vary depending on the compiler. But there are several ironclad principles (Ansi/iso): 1 sizeof (short int) 16-bit compiler char:1
The is related to the machine word length and compiler: Therefore, the width of the int,long int,short int may vary depending on the compiler. But there are several ironclad principles (Ansi/iso): 1 sizeof (short int) 16-bit compiler char:1
is related to machine word length and compiler: Therefore, the width of int,long int,short int may vary depending on the compiler. But there are several ironclad principles (Ansi/iso): 1 sizeof (short int) 16-bit compiler char:1 bytes char* (i.e.
The byte (byte/bait/n. [C]) is a unit of measurement of computer information technology used to measure storage capacity, and also represents data types and language characters in some computer programming languages.
Chinese name
In the C language, the number of bytes for a double, long, unsigned, int, char type datahttp://blog.csdn.net/lyl0625/article/details/7350045============================I can't remember, put it down:is related to the machine word length and
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