我想将所有行中的一个列值设置为“0”
SqlCommand cmd = m_objDbCAPEX.GetSqlCommand(CommandType.Text);
cmd.CommandText = "SELECT CAPEX_BillOfMaterialItem.* FROM CAPEX_BillOfMaterialItem,CAPEX_BillOfMaterial WHERE CAPEX_BillOfMaterialItem.szBillOfMaterialId = CAPEX_BillOfMaterial.szBillOfMaterialId and CAPEX_BillOfMaterial.szProjectCode = '" + szProjectCode + "'";
da = new SqlDataAdapter(cmd);
da.Fill(dtDat);
答案 0 :(得分:2)
您可以尝试将其设置为:
select 0 as fieldName, col1, col2,... from yourTable
在这种情况下,您的fieldName
列将设置为0.(您可以使用fieldName 替换列的实际名称)
答案 1 :(得分:0)
为@ Rahul的回答添加一个观点。
如果该字段具有特定值,并且如果您希望单独使其为0,那么您需要CASE语句。
SELECT CASE
WHEN capex_billofmaterialitem.fieldname = 'checking value goes here'
THEN 0
ELSE capex_billofmaterialitem.fieldname
END AS fieldname1,
capex_billofmaterialitem.*
FROM capex_billofmaterialitem,
capex_billofmaterial
WHERE capex_billofmaterialitem.szbillofmaterialid =
capex_billofmaterial.szbillofmaterialid
AND capex_billofmaterial.szprojectcode = '" + szProjectCode + "'