Data types that ranges for Microsoft Access, MySQL and SQL Server.

Data types that ranges for Microsoft Access, MySQL and SQL Server. Microsoft Access Data Types Data type Description Storage Text Use for text or combinations of text and numbers. 255 characters maximum Memo Memo is used for larger amounts of text. Stores up to 65,536 characters. Note: You cannot sort a memo field. However, they are searchable Byte Allows whole numbers from 0 to 255 1 byte Integer Allows whole numbers between -32,768 and 32,767 2 bytes Long Allows whole numbers between -2,147,483,648 and 2,147,483,647 4 bytes Single Single precision floating-point. Will handle most decimals 4 bytes Double Double precision floating-point. Will handle most decimals 8 bytes Currency Use for currency. Holds up to 15 digits of whole dollars, plus 4 decimal places. Tip: You can choose which country's currency to use 8 bytes AutoNumber AutoNumber fields automatically give each record its own number, usually starting at 1 4 bytes Date/Time Use for dates and times 8 bytes Yes/No A logical field can be displayed as Yes/No, True/False, or On/Off. In code, use the constants True and False (equivalent to -1 and 0). Note: Null values are not allowed in Yes/No fields 1 bit Ole Object Can store pictures, audio, video, or other BLOBs (Binary Large OBjects) up to 1GB Hyperlink Contain links to other files, including web pages Lookup Wizard Let you type a list of options, which can then be chosen from a drop-down list 4 bytes MySQL Data Types In MySQL there are three main types : text, number, and Date/Time types. Text types: Data type Description CHAR(size) Holds a fixed length string (can contain letters, numbers, and special characters). The fixed size is specified in parenthesis. Can store up to 255 characters VARCHAR(size) Holds a variable length string (can contain letters, numbers, and special characters). The maximum size is specified in parenthesis. Can store up to 255 characters. Note: If you put a greater value than 255 it will be converted to a TEXT type TINYTEXT Holds a string with a maximum length of 255 characters TEXT Holds a string with a maximum length of 65,535 characters BLOB For BLOBs (Binary Large OBjects). Holds up to 65,535 bytes of data MEDIUMTEXT Holds a string with a maximum length of 16,777,215 characters MEDIUMBLOB For BLOBs (Binary Large OBjects). Holds up to 16,777,215 bytes of data LONGTEXT Holds a string with a maximum length of 4,294,967,295 characters LONGBLOB For BLOBs (Binary Large OBjects). Holds up to 4,294,967,295 bytes of data ENUM(x,y,z,etc.) Let you enter a list of possible values. You can list up to 65535 values in an ENUM list. If a value is inserted that is not in the list, a blank value will be inserted. Note: The values are sorted in the order you enter them. You enter the possible values in this format: ENUM('X','Y','Z') SET Similar to ENUM except that SET may contain up to 64 list items and can store more than one choice Number types: Data type Description TINYINT(size) -128 to 127 normal. 0 to 255 UNSIGNED*. The maximum number of digits may be specified in parenthesis SMALLINT(size) -32768 to 32767 normal. 0 to 65535 UNSIGNED*. The maximum number of digits may be specified in parenthesis MEDIUMINT(size) -8388608 to 8388607 normal. 0 to 16777215 UNSIGNED*. The maximum number of digits may be specified in parenthesis INT(size) -2147483648 to 2147483647 normal. 0 to 4294967295 UNSIGNED*. The maximum number of digits may be specified in parenthesis BIGINT(size) -9223372036854775808 to 9223372036854775807 normal. 0 to 18446744073709551615 UNSIGNED*. The maximum number of digits may be specified in parenthesis FLOAT(size,d) A small number with a floating decimal point. The maximum number of digits may be specified in the size parameter. The maximum number of digits to the right of the decimal point is specified in the d parameter DOUBLE(size,d) A large number with a floating decimal point. The maximum number of digits may be specified in the size parameter. The maximum number of digits to the right of the decimal point is specified in the d parameter DECIMAL(size,d) A DOUBLE stored as a string , allowing for a fixed decimal point. The maximum number of digits may be specified in the size parameter. The maximum number of digits to the right of the decimal point is specified in the d parameter *The integer types have an extra option called UNSIGNED. Normally, the integer goes from an negative to positive value. Adding the UNSIGNED attribute will move that range up so it starts at zero instead of a negative number. Date types: Data type Description DATE() A date. Format: YYYY-MM-DD Note: The supported range is from '1000-01-01' to '9999-12-31' DATETIME() *A date and time combination. Format: YYYY-MM-DD HH:MM:SS Note: The supported range is from '1000-01-01 00:00:00' to '9999-12-31 23:59:59' TIMESTAMP() *A timestamp. TIMESTAMP values are stored as the number of seconds since the Unix epoch ('1970-01-01 00:00:00' UTC). Format: YYYY-MM-DD HH:MM:SS Note: The supported range is from '1970-01-01 00:00:01' UTC to '2038-01-09 03:14:07' UTC TIME() A time. Format: HH:MM:SS Note: The supported range is from '-838:59:59' to '838:59:59' YEAR() A year in two-digit or four-digit format. Note: Values allowed in four-digit format: 1901 to 2155. Values allowed in two-digit format: 70 to 69, representing years from 1970 to 2069 *Even if DATETIME and TIMESTAMP return the same format, they work very differently. In an INSERT or UPDATE query, the TIMESTAMP automatically set itself to the current date and time. TIMESTAMP also accepts various formats, like YYYYMMDDHHMMSS, YYMMDDHHMMSS, YYYYMMDD, or YYMMDD. SQL Server Data Types Character strings: Data type Description Storage char(n) Fixed-length character string. Maximum 8,000 characters n varchar(n) Variable-length character string. Maximum 8,000 characters varchar(max) Variable-length character string. Maximum 1,073,741,824 characters text Variable-length character string. Maximum 2GB of text data Unicode strings: Data type Description Storage nchar(n) Fixed-length Unicode data. Maximum 4,000 characters nvarchar(n) Variable-length Unicode data. Maximum 4,000 characters nvarchar(max) Variable-length Unicode data. Maximum 536,870,912 characters ntext Variable-length Unicode data. Maximum 2GB of text data Binary types: Data type Description Storage bit Allows 0, 1, or NULL binary(n) Fixed-length binary data. Maximum 8,000 bytes varbinary(n) Variable-length binary data. Maximum 8,000 bytes varbinary(max) Variable-length binary data. Maximum 2GB image Variable-length binary data. Maximum 2GB Number types: Data type Description Storage tinyint Allows whole numbers from 0 to 255 1 byte smallint Allows whole numbers between -32,768 and 32,767 2 bytes int Allows whole numbers between -2,147,483,648 and 2,147,483,647 4 bytes bigint Allows whole numbers between -9,223,372,036,854,775,808 and 9,223,372,036,854,775,807 8 bytes decimal(p,s) Fixed precision and scale numbers. Allows numbers from -10^38 +1 to 10^38 –1. The p parameter indicates the maximum total number of digits that can be stored (both to the left and to the right of the decimal point). p must be a value from 1 to 38. Default is 18. The s parameter indicates the maximum number of digits stored to the right of the decimal point. s must be a value from 0 to p. Default value is 0 5-17 bytes numeric(p,s) Fixed precision and scale numbers. Allows numbers from -10^38 +1 to 10^38 –1. The p parameter indicates the maximum total number of digits that can be stored (both to the left and to the right of the decimal point). p must be a value from 1 to 38. Default is 18. The s parameter indicates the maximum number of digits stored to the right of the decimal point. s must be a value from 0 to p. Default value is 0 5-17 bytes smallmoney Monetary data from -214,748.3648 to 214,748.3647 4 bytes money Monetary data from -922,337,203,685,477.5808 to 922,337,203,685,477.5807 8 bytes float(n) Floating precision number data from -1.79E + 308 to 1.79E + 308. The n parameter indicates whether the field should hold 4 or 8 bytes. float(24) holds a 4-byte field and float(53) holds an 8-byte field. Default value of n is 53. 4 or 8 bytes real Floating precision number data from -3.40E + 38 to 3.40E + 38 4 bytes Date types: Data type Description Storage datetime From January 1, 1753 to December 31, 9999 with an accuracy of 3.33 milliseconds 8 bytes datetime2 From January 1, 0001 and December 31, 9999 with an accuracy of 100 nanoseconds 6-8 bytes smalldatetime From January 1, 1900 to June 6, 2079 with an accuracy of 1 minute 4 bytes date Store a date only. From January 1, 0001 to December 31, 9999 3 bytes time Store a time only to an accuracy of 100 nanoseconds 3-5 bytes datetimeoffset The same as datetime2 with the addition of a time zone offset 8-10 bytes timestamp Stores a unique number that gets updated every time a row gets created or modified. The timestamp value is based upon an internal clock and does not correspond to real time. Each table may have only one timestamp variable Other data types: Data type Description sql_variant Stores up to 8,000 bytes of data of various data types, except text, ntext, and timestamp uniqueidentifier Stores a globally unique identifier (GUID) xml Stores XML formatted data. Maximum 2GB cursor Stores a reference to a cursor used for database operations table Stores a result-set for later processing