TABLE 88. Data Types Differences
|
SQL Server Data Type
|
Sybase Data Type
|
Description
|
Conversion
|
|
char(n)
1<=n<=8000
|
char(n)
1<=n<=255
|
Fixed-length character data
|
if n>255, SQL Server nchar(n) should be converted to Sybase text
|
|
nchar(n)
1<=n<=4000
|
nchar(n)
1<=n<=255
|
Fixed-length character data (Unicode, multibyte sets)
|
if n>255, SQL Server nchar(n) should be converted to Sybase text
|
|
varchar(n)
1<=n<=8000
|
varchar(n)
1<=n<=255
|
Variable-length character data
|
if n>255, SQL Server varchar(n) should be converted to Sybase text
|
|
nvarchar(n)
1<=n<=4000
|
nvarchar(n)
1<=n<=255
|
Variable-length character data (Unicode, multibyte sets)
|
if n>255, SQL Server nvarchar(n) should be converted to Sybase text
|
|
bigint
|
-
|
Integer, 64-bit
|
SQL Server bigint should be converted to Sybase decimal(19,0)
|
|
int
|
int
|
Integer, 32-bit
|
Not required
|
|
smallint
|
smallint
|
Integer, 16-bit
|
Not required
|
|
tinyint
|
tinyint
|
Integer, 8-bit
|
Not required
|
|
datetime
|
datetime
|
Date and time
|
Not required
|
|
smalldatetime
|
smalldatetime
|
Date and time
|
Not required
|
|
money
|
money
|
Monetary data
|
Not required
|
|
smallmoney
|
smallmoney
|
Monetary data
|
Not required
|
|
decimal(p,s) 1<=p<=38; 0<=s<=p;
|
decimal(p,s)
1<=p<= 38; 0<=s<=p;
|
Fixed-point numeric data
|
Not required
|
|
numeric(p,s)
1<=p<=38; 0<=s<=p;
|
numeric(p,s)
1<=p<=38; 0<=s<=p;
|
Fixed-point numeric data
|
Not required
|
|
float(n)
1<=n<=53
|
float(n)
1<=n<=machine dependent
|
Floating point numeric data
|
Not required
|
|
-
|
double precision
|
Floating point numeric data, 64-bit
|
Sybase double precision should be converted to SQL server float(53)
|
|
real
|
real
|
Floating point numeric data, 32-bit
|
Not required
|
|
text
|
text
|
Variable-length character data, up to 2 Gb
|
Not required
|
|
ntext
|
-
|
Variable-length Unicode character data, up to 1 Gb
|
SQL Server ntext should be converted to Sybase text
|
|
binary(n)
1<=n<=8000
|
binary(n)
1<=n<=255
|
Fixed-length binary data
|
if n>255, SQL Server binary(n) should be converted to Sybase image
|
|
varbinary(n)
1<=n<=8000
|
varbinary(n)
1<=n<=255
|
Variable-length binary data
|
if n>255, SQL Server varbinary(n) should be converted to Sybase image
|
|
image
|
image
|
Variable-length binary data, up to 2 Gb
|
Not required
|
|
bit
|
bit
|
Integer value 0 or 1
|
SQL Server bit can be NULL, while Sybase bit cannot be NULL
Nullable SQL Server bit should be converted to Sybase tinyint or char(1)
|
|
uniqueidentifier
|
-
|
Globally unique identifier (GUID)
|
SQL Server uniqueidentifier should be converted to Sybase char(36)
|
|
timestamp
|
timestamp
|
Unique number that gets updated every time a row gets updated
|
Not required
|
