动态命令文本到 Reporting Services

Dynamically command text into Reporting Services

我在 SQL Server Reporting Services 和 Visual Studio .NET 创建的报告中遇到问题。

我有一个字符串类型的字段,有时在数据库中可以为 NULL,这使我无法使用 LIKE '%%' 进行简单搜索。我的想法是在 CommandText IIF 报告中插入一个子句,这样如果该字段为 NULL,实际上我指定为默认值 '%',则不会进行任何研究,否则将添加到列表中LIKE 搜索的字段。

该字段是 Parameters.NOTEIIF 我认为会使用的子句:

IIF (Trim (Parameters! NOTE.Value) = "%", "", "AND AD.NOTE ILIKE%" + Parameters! NOTE.Value + "% "). 

主要问题是报告没有给我任何错误,但即使我 returns 也没有价值。我看不懂怎么办。

 <Query>
        <DataSourceName>DS1</DataSourceName>
        <CommandText>
SELECT
    ANG.Cognome || ' ' || ANG.Nome AS NomeDipendente,
    R.Descrizione AS Reparto,
    AD.Anno,
    AD.Mese,
    AD.DataInserimento,
    TP.Descrizione AS TipoPagamento, 
    AD.Importo,
    AD.Note, 
    getRetribuzioneDipendente(AD.Dipendente, AD.Mese, AD.Anno) AS Retribuzione, 
    (SELECT 
      SUM(AD1.Importo) 
     FROM 
      AccontiDipendenti AD1 
     WHERE 
      AD1.Dipendente = AD.Dipendente AND
      AD1.Mese = AD.Mese AND
      AD1.Anno = AD.Anno AND
      AD1.DataInserimento &lt;= AD.DataInserimento
    ) 
    AS Acconti,
    U.NickName
  FROM
    AccontiDipendenti AD
  INNER JOIN
    AnagraficaDipendenti ANG ON (AD.Dipendente = ANG.CodiceDipendente)
  INNER JOIN
    MansioniDipendenti MD ON (ANG.CodiceMansione = MD.CodiceMansione)
  INNER JOIN
    Reparti R ON (MD.CodiceReparto = R.CodiceReparto)
  INNER JOIN
    Utenti U ON (AD.UserName = U.UserName) 
  INNER JOIN
    TipiPagamento TP ON (AD.CodiceTipoPag = TP.CodiceTipoPag)
  WHERE 
 ANG.CodiceDipendente ILIKE COALESCE(@CODICEDIPENDENTE, '%') AND
    R.CodiceReparto ILIKE COALESCE(@CODICEREPARTO, '%') AND 
    AD.CodiceTipoPag ILIKE COALESCE(@CODICETIPOPAG, '%') AND 
    to_date(to_char(AD.DataInserimento, 'DD-MM-YYYY'), 'DD-MM-YYYY') &gt;= to_date(@INIZIO, 'DD-MM-YYYY') AND
    to_date(to_char(AD.DataInserimento, 'DD-MM-YYYY'), 'DD-MM-YYYY') &lt;=   to_date(@FINE, 'DD-MM-YYYY') 
                IIF(Trim(Parameters!NOTE.Value)="%", "" , " AND AD.NOTE ILIKE %" + Parameters!NOTE.Value  + "%")
</CommandText>
        <QueryParameters>
          <QueryParameter Name="NOTEASSEGNO">
            <Value>=IIF(Trim(Parameters!NOTE.Value)="%", "%" , "%" + Parameters!NOTE.Value  + "%")</Value>
          </QueryParameter>
          <QueryParameter Name="CODICEDIPENDENTE">
            <Value>=Parameters!CODICEDIPENDENTE.Value</Value>
          </QueryParameter>
          <QueryParameter Name="CODICEREPARTO">
            <Value>=Parameters!CODICEREPARTO.Value</Value>
          </QueryParameter>
          <QueryParameter Name="INIZIO">
            <Value>=Parameters!DATAINIZIO.Value</Value>
          </QueryParameter>
          <QueryParameter Name="FINE">
            <Value>=Parameters!DATAFINE.Value</Value>
          </QueryParameter>
          <QueryParameter Name="CODICETIPOPAG">
            <Value>=Parameters!CODICETIPOPAG.Value</Value>
          </QueryParameter>
        </QueryParameters>
      </Query>

使用参数传递给query.Suppose参数名称是@Note。将 @Note 值设置为 Parameters!NOTE.Value。并确保您在报告和查询中的两个地方都设置了参数 Null by dfault。你可以做这样的条件,

 AND (@Note IS NULL OR AD.NOTE LIKE +'%'@Note+'%')

这将首先检查@Note 值是否为空,如果为空,则它不会进入下一个过滤器,如果不为空,则它将进入 Like 的过滤器。