[英]Pass XML document as parameter to sql script in .net vb
如何在vb.net中將XML文檔作為參數傳遞給SQL腳本? 我想將XML用作SQL腳本中的變量。 SQL腳本無法將變量i識別為.net中的參數提交者
這是我的XML。
<?xml version="1.0"?>
<sqlSkript>
<parameter>
<name>name</name>
<datentyp>varchar</datentyp>
</parameter>
<parameter>
<name>strasse</name>
<datentyp>varchar</datentyp>
</parameter>
</sqlSkript>
這是我的SQL腳本。
DECLARE @xml xml
SET @xml = @test
SELECT t.name AS table_name,
SCHEMA_NAME(t.schema_id) AS schema_name,
c.name AS column_name,
st.name as datatyp
FROM sys.tables AS t
INNER JOIN sys.columns c ON t.OBJECT_ID = c.OBJECT_ID
INNER JOIN sys.types st ON st.system_type_id = c.system_type_id
AND st.name != 'sysname'
WHERE (c.name like '%' + (SELECT @xml.value('(/sqlSkript/parameter/name)[1]', 'varchar(100)')) + '%'
AND st.name like (SELECT @xml.value('(/sqlSkript/parameter/datentyp)[1]', 'varchar(100)')))
or
(c.name like '%' + (SELECT @xml.value('(/sqlSkript/parameter/name)[2]', 'varchar(100)')) + '%'
AND st.name like (SELECT @xml.value('(/sqlSkript/parameter/datentyp)[2]', 'varchar(100)')))
ORDER BY schema_name, table_name;
這是我的vb.net代碼
Dim command As SqlCommand = New SqlCommand()
Dim xmldoc As New Xml.XmlDocument
xmldoc.Load(System.IO.Path.GetFullPath(Application.StartupPath & "\XML\indivudellParameter.xml"))
Dim param As SqlParameter = New SqlParameter("@test", SqlDbType.Xml)
param.Value = New SqlXml(New XmlTextReader(xmldoc.InnerXml, XmlNodeType.Document, Nothing))
command.Parameters.Add(param)
Using reader As SqlDataReader = _server.ConnectionContext.ExecuteReader(script, command)
While reader.Read()
//do something
End While
reader.Close()
End Using
編輯:
解決方法
Dim xmldoc As New Xml.XmlDocument
xmldoc.Load(System.IO.Path.GetFullPath(Application.StartupPath & "\XML\indivudellParameter.xml"))
script = script.Replace("@test", xmldoc.InnerXml)
Using reader As SqlDataReader = _server.ConnectionContext.ExecuteReader(script)
While reader.Read()
// do something
End While
可能很簡單:
您確定要在兩種情況下將XML數據值與st.name進行比較(用***
標記地點)嗎?
WHERE (c.name like '%' + (SELECT @xml.value('(/sqlSkript/parameter/name)[1]', 'varchar(100)')) + '%'
AND ***st.name*** like (SELECT @xml.value('(/sqlSkript/parameter/datentyp)[1]', 'varchar(100)')))
or
(c.name like '%' + (SELECT @xml.value('(/sqlSkript/parameter/name)[2]', 'varchar(100)')) + '%'
AND ***st.name*** like (SELECT @xml.value('(/sqlSkript/parameter/datentyp)[2]', 'varchar(100)')))
如果不是那么簡單:嘗試檢查您的參數是否正確進入SQL腳本(將其寫入某個臨時表並在那里檢查它)。
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