CREATE
FUNCTION
getEval(
@s
VARCHAR
(
100
))
RETURNS
VARCHAR
(
100
)
AS
BEGIN
DECLARE
@xmlDoc
INT
,
@xslDoc
INT
,
@err
INT
,
@outValue
INT
,
@outStr
VARCHAR
(
100
)
DECLARE
@str
VARCHAR
(
1000
),
@xsl
VARCHAR
(
8000
)
SET
@str
=
'
<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="test.xsl"?>
<root>
'
+
@s
+
'
</root>
'
SET
@xsl
=
'
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl">
<xsl:template match="/">
<xsl:script>
function eVal(node)
{
return eval(node.selectSingleNode("//root").text);
}
</xsl:script>
<xsl:eval>eVal(this)</xsl:eval>
</xsl:template>
</xsl:stylesheet>
'
--
SELECT @str,@xsl
EXEC
@err
=
sp_OACreate
'
Msxml2.DOMDocument.3.0
'
,
@xmlDoc
OUT
EXEC
@err
=
sp_OASetProperty
@xmlDoc
,
'
async
'
,
'
false
'
EXEC
@err
=
sp_OAMethod
@xmlDoc
,
'
LoadXML
'
,
@outValue
OUT,
@str
EXEC
@err
=
sp_OACreate
'
Msxml2.DOMDocument.3.0
'
,
@xslDoc
OUT
EXEC
@err
=
sp_OASetProperty
@xslDoc
,
'
false
'
EXEC
@err
=
sp_OASetProperty
@xmlDoc
,
'
resolveExternals
'
,
'
false
'
EXEC
@err
=
sp_OAMethod
@xslDoc
,
@xsl
EXEC
@err
=
sp_OAMethod
@xmlDoc
,
'
transformNode
'
,
@outStr
OUT,
@XslDoc
EXEC
@err
=
sp_OADestroy
@xmlDoc
EXEC
@err
=
sp_OADestroy
@xslDoc
RETURN
@outStr
END
GO
CREATE
TABLE
tb(id
INT
IDENTITY
(
1
,
1
),v
VARCHAR
(
1000
))
GO
INSERT
tb
SELECT
'
1*2+3
'
UNION
ALL
SELECT
'
2+3*5
'
UNION
ALL
SELECT
'
(2+3)*5
'
GO
SELECT
id,v,dbo.getEval(v)
FROM
tb
GO
/*1 1*2+3 5
2 2+3*5 17
3 (2+3)*5 25 */
DROP
TABLE
tb
GO
DROP
FUNCTION
getEval
GO
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