Parse 方法 (String)
Parses the specified expression string.
命名空間： Microsoft.SqlServer.Management.Dmf
組件： Microsoft.SqlServer.Dmf (在 Microsoft.SqlServer.Dmf.dll 中)
語法
'宣告
Public Shared Function Parse ( _
input As String _
) As ExpressionNode
'用途
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
參數
- input
型別：System. . :: . .String
A String value that specifies the string to be parsed.
傳回值
型別：Microsoft.SqlServer.Management.Dmf. . :: . .ExpressionNode
An ExpressionNode object value that specifies part of an expression.
備註
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]
[!附註]
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
範例
C#
string expressionStr = "ExecuteSql('Numeric','SELECT 1')";
ExpressionNode node = ExpressionNode.Parse (expressionStr);
TestAssertion.IsTrue (node.Type == ExpressionNodeType.Function, "Should be function");