可在需要使用多个条件时使用的 Microsoft Axapta 的 X + + 查询示例

Microsoft 商业解决方案-Axapta 3.0 现在是 Microsoft Dynamics AX 3.0 的一部分。 所有对 Microsoft Business 解决方案的引用-Axapta 和 Microsoft Axapta 都属于 Microsoft Dynamics AX。

简介

本文包含 Microsoft Business 解决方案 Axapta + + 查询示例,当你希望使用多个条件(如日期和 ID 或多个 Id)时,你可以在 Microsoft 商业解决方案-Axapta 中使用。

更多信息

以下代码提供与注释中所示的 while select 语句相同的输出。

static void Query_Example(Args _args){    Query q;    Queryrun qr;    QueryBuildRange qbr;    QueryBuildDataSource qbds;    InventTrans iv;    Real Total;    str range;        /* The following query produces the same results as:    while select sum(qty) from inventTrans        where (inventtrans.ItemId == "OL-1500") || inventtrans.ItemId == "OL-1000"            join inventDim                group by inventBatchId                where inventDim.InventDimId == inventTrans.InventDimId */    // Instantiate the query class.    q = new query("Inventory_Transactions");        // Create a data source by using the InventTrans table.    qbds = q.addDataSource(tablenum(InventTrans));     // Select only the Qty field, and then sum the Qty field.    qbds.addSelectionField(fieldnum(InventTrans,Qty),selectionfield::Sum);     // Set the range to the ItemId field.    qbr = qbds.addRange(fieldnum(InventTrans,ItemId));      // The range for the where statement specifies an 'or' statement.    qbr.value(strfmt('((%1 == "%2") || (%1 == "%3"))',fieldstr(inventtrans,ItemId),'OL-1500','OL-1000'));    // The following is the alternative way to enter the range.    // This also limits the selection on the ItemId values.    range = strfmt('((ItemId == "%1")||(ItemID =="%2"))',queryvalue('OL-1500'),queryvalue('OL-1000'));    qbr.value(range);        // Create the join to the InventDim table.    qbds = qbds.addDataSource(tablenum(InventDim));      // Specify the table relationship.    qbds.relations(true);      // Indicate the order mode as the grouping.    qbds.orderMode(ordermode::GroupBy);     // Specify the grouping on the InventBatchId field.    qbds.addSortField(fieldnum(InventDim,InventBatchId));     // Instantiate the QueryRun class for the form.    qr = new QueryRun(q);      // If the user clicks OK, continue.    if (qr.prompt())      {        // While there are records in the query, continue.        while (qr.next())          {                       // Set the value of the query to the iv table.            bufferiv = qr.get(tablenum(InventTrans));             // Create the value of the total field.           total =  iv.Qty;          }    }    // Specify the quantity for the item.    info(strfmt("Quantity: %1",total));      // Indicate the SQL string that is used for the query.     info (qr.query().dataSourceNo(1).toString());  }

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