Here i have an usable code for all u:
I wanted to know if a field is nullable or if it's defined as a primary key, here are those functions definitions:
*Aditional Notes:
if any of the tables are replicated in another database exactly , this code will not work well.
//-----to know if a field is nullable-------
function mssql_field_nullable($ip,$user,$pass,$table,$field)//starting from 1st field
{
$conn=mssql_connect($ip,$user,$pass)or die;
mssql_select_db('master');
$result=mssql_query("SELECT syscolumns.isnullable
FROM sysobjects INNER JOIN
syscolumns ON sysobjects.id = syscolumns.id WHERE sysobjects.name ='$table' AND syscolumns.isnullable = 1");
$x=mssql_num_rows($result);
mssql_close($conn);
return ($x==1?1:0);
}
//-------to know if a field is a primary key-------
function mssql_field_key($ip,$user,$pass,$table,$field)//starting from 1st field
{
$conn=mssql_connect($ip,$user,$pass)or die;
mssql_select_db('master');
$result=mssql_query("SELECT sysindexkeys.colid FROM sysobjects INNER JOIN sysindexkeys ON sysobjects.id = sysindexkeys.id WHERE sysobjects.name ='$table' AND sysindexkeys.colid = $field");
$x=mssql_num_rows($result);
mssql_close($conn);
return ($x==1?1:0);
}
by R.M.R.A
mssql_field_type
(PHP 4, PHP 5, PECL odbtp >= 1.1.1)
mssql_field_type — Gets the type of a field
Avertizare
Această funcție a fost ELIMINATĂ în PHP 7.0.0.
Variante alternative pentru această funcție sunt:
Descrierea
mssql_field_type
( resource
$result
[, int $offset = -1
] ) : string
Returns the type of field no. offset in
result.
Parametri
-
result -
The result resource that is being evaluated. This result comes from a call to mssql_query().
-
offset -
The field offset, starts at 0. If omitted, the current field is used.
Valorile întoarse
The type of the specified field index on success sau FALSE în cazul eșecului.
Exemple
Example #1 mssql_field_type() example
<?php
// Connect to MSSQL and select the database
mssql_connect('MANGO\SQLEXPRESS', 'sa', 'phpfi');
mssql_select_db('php');
// Send a select query to MSSQL
$query = mssql_query('SELECT [name] FROM [php].[dbo].[persons]');
// Print the field type and length
echo '\'' . mssql_field_name($query, 0) . '\' is a type of ' .
strtoupper(mssql_field_type($query, 0)) .
'(' . mssql_field_length($query, 0) . ')';
// Free the query result
mssql_free_result($query);
?>
Exemplul de mai sus va afișa ceva similar cu:
'name' is a type of CHAR(50)
A se vedea și
- mssql_field_length() - Get the length of a field
- mssql_field_name() - Get the name of a field
add a note
User Contributed Notes 3 notes
rmorales at protel dot net dot mx ¶
21 years ago
huib at bestia dot com ¶
19 years ago
If you need a more detailed discription of your column type,
This query shows your true datatypes like:
binary => binary
varbinary => varbinary
varchar => varchar
bit => bit
char => char
datetime => datetime
smalldatetime => smalldatetime
decimal => decimal
real => real
float => float
tinyint => tinyint
smallint => smallint
smallmoney => smallmoney
money => money
nchar => nchar
ntext => ntext
text => text
numeric => numeric
nvarchar => nvarchar
SELECT sysobjects.name AS tableName, syscolumns.name AS columnName, systypes.name AS columnType
FROM sysobjects INNER JOIN
syscolumns ON sysobjects.id = syscolumns.id INNER JOIN
systypes ON syscolumns.type = systypes.type AND syscolumns.xusertype = systypes.xusertype
nicholas at silverorange dot com ¶
19 years ago
The matching returned values for each of the common datatypes are:
binary => blob
varbinary => blob
varchar => char
bit => bit
char => char
datetime => datetime
smalldatetime => datetime
decimal => real
real => real
float => real
tinyint => int
smallint => int
smallmoney => money
money => money
nchar => char
ntext => text
text => text
numeric => numeric
nvarchar => char
