ExpressionNode.Parse Method (String)
Parses the specified expression string.
Namespace: Microsoft.SqlServer.Management.Dmf
Assembly: Microsoft.SqlServer.Dmf (in Microsoft.SqlServer.Dmf.dll)
Syntax
'Declaration
Public Shared Function Parse ( _
input As String _
) As ExpressionNode
'Usage
Dim input As String
Dim returnValue As ExpressionNode
returnValue = ExpressionNode.Parse(input)
public static ExpressionNode Parse(
string input
)
public:
static ExpressionNode^ Parse(
String^ input
)
static member Parse :
input:string -> ExpressionNode
public static function Parse(
input : String
) : ExpressionNode
Parameters
- input
Type: System.String
A String value that specifies the string to be parsed.
Return Value
Type: Microsoft.SqlServer.Management.Dmf.ExpressionNode
An ExpressionNode object value that specifies part of an expression.
Remarks
Depending on the type of expression the object assigns the appropriate type when parsing. For example, the ExecuteSql statement specifies a function. If the expression contains a function then the Type property is set to Function.
The expression must conform to the Transact-SQL expression syntax:
property comparison_operator constantList
where
property: one of the facet properties
comparison_operator: = != > >= < <= [NOT]LIKE [NOT]IN
constantList: constant [, constantList]
Note
The Like operator uses the Transact-SQL syntax.
The expression can be extended using logical operators:
condition_expression logical_operator condition_expression
where
logical_operator: AND OR
Examples
C#
string expressionStr = "ExecuteSql('Numeric','SELECT 1')";
ExpressionNode node = ExpressionNode.Parse (expressionStr);
TestAssertion.IsTrue (node.Type == ExpressionNodeType.Function, "Should be function");