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Data Types In Microsoft® SQL Server™, each column, local variable, expression, and parameter has a related data type, which is an attribute that specifies the type of data (integer, character, money, and so on) that the object can hold. SQL Server supplies a set of system data types that define all of the types of data that can be used with SQL Server. The set of system-supplied data types is shown below.
User-defined data types, which are aliases for system-supplied data types, can also be defined. For more information about user-defined data types, see sp_addtype and Creating User-defined Data Types.
When two expressions that have different data types, collations, precision, scale, or length are combined by an operator:
The data type of the resulting value is determined by applying the rules of data type precedence to the data types of the input expressions. For more information, see Data Type Precedence.
If the result data type is char, varchar, text, nchar, nvarchar, or ntext, the collation of the result value is determined by the rules of collation precedence. For more information, see Collation Precedence.
The precision, scale, and length of the result depend on the precision, scale, and length of the input expressions. For more information, see Precision, Scale, and Length. SQL Server provides data type synonyms for SQL-92 compatibility. For more information, see Data Type Synonyms.
Exact Numerics Integers bigint
Integer (whole number) data from -2^63 (-9223372036854775808) through 2^63-1 (9223372036854775807).
int
Integer (whole number) data from -2^31 (-2,147,483,648) through 2^31 - 1 (2,147,483,647).
smallint
Integer data from 2^15 (-32,768) through 2^15 - 1 (32,767).
tinyint
Integer data from 0 through 255.
bit bit
Integer data with either a 1 or 0 value.
decimal and numeric decimal
Fixed precision and scale numeric data from -10^38 +1 through 10^38 –1.
numeric
Functionally equivalent to decimal.
money and smallmoney money
Monetary data values from -2^63 (-922,337,203,685,477.5808) through 2^63 - 1 (+922,337,203,685,477.5807), with accuracy to a ten-thousandth of a monetary unit.
smallmoney
Monetary data values from -214,748.3648 through +214,748.3647, with accuracy to a ten-thousandth of a monetary unit.
Approximate Numerics float
Floating precision number data from -1.79E + 308 through 1.79E + 308.
real
Floating precision number data from -3.40E + 38 through 3.40E + 38.
datetime and smalldatetime datetime
Date and time data from January 1, 1753, through December 31, 9999, with an accuracy of three-hundredths of a second, or 3.33 milliseconds.
smalldatetime
Date and time data from January 1, 1900, through June 6, 2079, with an accuracy of one minute.
Character Strings char
Fixed-length non-Unicode character data with a maximum length of 8,000 characters.
varchar
Variable-length non-Unicode data with a maximum of 8,000 characters.
text
Variable-length non-Unicode data with a maximum length of 2^31 - 1 (2,147,483,647) characters.
Unicode Character Strings nchar
Fixed-length Unicode data with a maximum length of 4,000 characters.
nvarchar
Variable-length Unicode data with a maximum length of 4,000 characters. sysname is a system-supplied user-defined data type that is functionally equivalent to nvarchar(128) and is used to reference database object names.
ntext
Variable-length Unicode data with a maximum length of 2^30 - 1 (1,073,741,823) characters.
Binary Strings binary
Fixed-length binary data with a maximum length of 8,000 bytes.
varbinary
Variable-length binary data with a maximum length of 8,000 bytes.
image
Variable-length binary data with a maximum length of 2^31 - 1 (2,147,483,647) bytes.
Other Data Types cursor
A reference to a cursor.
sql_variant
A data type that stores values of various SQL Server-supported data types, except text, ntext, timestamp, and sql_variant.
table
A special data type used to store a result set for later processing .
timestamp
A database-wide unique number that gets updated every time a row gets updated.
terry >> jo, jeg kan godt se at der er data i feltet hvis jeg ser databasen igennem Access men jeg kan ikke trække dem ud på min hjemmeside. Øvrige felter i databasen kan jeg godt få vist, det er tilsyneladende kun den kolonne der hedder "content" jeg ikke kan få vist.
arne_v >> jamen så burde den del jo være iorden, men hvis jeg bruger Access så skriver den en feltlængde på 16.
ntext can contain large amounts of data nd arte theefore held OUTSIDE of th actual databse (blob file) so the 16 bytes (characters) only hold the address of the
I have JUST converted an Access datavase with memo fields and the get converted to ntext and I can also see the data!
well as I dont normally make web applications I cant say which method you should use, but I do know that many others have had the same problem as you mention and this is because of the size of a memo/nchar field
Der er flere ting der ikke fungerer, så jeg sidder og funderer over om jeg har gjort det rigtigt ?
Det jeg rent praktisk har gjort er følgende:
Connectet til min MSSQL database på webhotellet via Access.
Der har jeg så importeret tabellerne fra en lokal MDB fil (incl. indhold)
Nu sidder jeg så og er i tvivl om hvorvidt det er den rigtige måde at importerer på ?
Det der undrer mig er endvidere, at alle siger man blot skal ændre sin connectionstreng hvis man skifter til MSSQL og så kan jeg ikke forstå det bøvl jeg har :o(
CREATE TABLE texttest ( id INTEGER PRIMARY KEY, content NTEXT ) GO INSERT INTO texttest VALUES (1,N'abc') GO INSERT INTO texttest VALUES (2,N'def') GO
og kører følgende side:
<% Set con = Server.CreateObject("ADODB.Connection") con.Open "Provider=SQLOLEDB;Data Source=ARNEPC3;Initial Catalog=test;Integrated Security=SSPI;" s = "1 3 5 7 " s = s + s + s + s + s + s + s + s s = s + s + s + s + s + s + s + s s = s + s + s + s + s + s + s + s s = s + s + s + s + s + s + s + s con.Execute("INSERT INTO texttest VALUES (3,N'" & s & "')") Set rs = con.Execute("SELECT content FROM texttest WHERE id = 3") Response.Write rs("content") Set rs = Nothing Set con = Nothing %>
Ja, men det er måske ved min import fra access det går galt. Jeg vil jo gerne importerer mine tabeller inkl. indhold og derfor har jeg ikke oprettet mine tabeller med CREATE TABLE.
Jeg har ikke adgang til Enterprise eller lign. software .........
jeg fatter ikke en bjælde og må nok se i øjnene at det er for stor en mundfuld til mig :o(
Your original question! "Jeg er ved at forsøge at gå fra Access til MSSQl og bruger Access som front-end."
But here there was NO mention that you want to connect to an SQL Server on the web!
IN Access there is a tool for "upsizing" from Access to SQL Server. (Tools+Database utilities+Upsizing Wizard menu) When you use this you can choose to make an Access Data Project (ADP) instead of an MDB. Is this what you have used?
Nej det kan jeg godt se, det var min fejl men ja, det er til SQL server på nettet.
Nu bruger jeg den danske udgave af access og er ikke helt sikker på hvilken wizard du mener, men ja, jeg har fået oprettet en adp fil som jeg blot åbner for at få adgang til MSSQL databasen.
if you just accept that ntext is the same a s a memo then you cant go wrong. So if you create any new fields which would be memo in Access then you use ntext in SQL Server.
If you have used the following line of code to read a memo field in ASP then you should still be able to use it.
indhold = rs("content")
but as I have mentioned before, the GetChunk method of a recordset is NORMALLY necessary to read memo/image fields. So if you rae having problems then I suggest you try it.
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