public SelectDataFromFunctionText(SqlBuiltinScalarFunctionCallExpression functionCall,
RawData rawData, SelectDataFunctionInfo info)
{
_FunctionCall = functionCall;
_RawData = rawData;
if (info.ReturnDbType.HasValue)
{
_ReturnType = info.ReturnType;
_DbType = info.ReturnDbType.Value;
}
}
public SelectDataFromFunctionLeadLag(SqlBuiltinScalarFunctionCallExpression functionCall, RawData rawData, SelectDataFunctionInfo info)
{
_FunctionCall = functionCall;
_RawData = rawData;
if (info.ReturnDbType.HasValue)
{
_ReturnType = info.ReturnType;
_DbType = info.ReturnDbType.Value;
}
_SelectExpression = ParseAsSelect(_FunctionCall.Tokens);
var batch = ExecuteSelect(_SelectExpression, _RawData.RawRowList.FirstOrDefault());
_DbType = ( DbType )Enum.Parse(typeof(DbType), batch.Fields[0].DbType, true);
_ReturnType = batch.Fields[0].NetType;
}
public SelectDataFromFunctionConversion(SqlBuiltinScalarFunctionCallExpression functionCall, RawData rawData, SelectDataFunctionInfo info)
{
_FunctionCall = functionCall;
_RawData = rawData;
if (info.ReturnDbType.HasValue)
{
_ReturnType = info.ReturnType;
_DbType = info.ReturnDbType.Value;
}
else if (functionCall is SqlCastExpression castFunction)
{
var dataTypeInfo = new DataTypeInfo(castFunction.DataType.Sql, rawData.Database.UserDataTypes);
_ReturnType = dataTypeInfo.NetDataType;
_DbType = dataTypeInfo.DbDataType;
}
}
public SelectDataFromFunctionRandom(SqlBuiltinScalarFunctionCallExpression functionCall,
RawData rawData, SelectDataFunctionInfo info)
{
_FunctionCall = functionCall;
_RawData = rawData;
}
public SelectDataFromFunctionMathAggregate(SqlBuiltinScalarFunctionCallExpression functionCall, RawData rawData, SelectDataFunctionInfo info)
{
_FunctionCall = functionCall;
_RawData = rawData;
if (_NeedsColumn.Contains(_FunctionCall.FunctionName.ToUpper()))
{
_ColumnRef = GetSingleColumn( );
var tc = Helper.GetTableColumn(_ColumnRef, _RawData);
_ReturnType = tc.Column.NetDataType;
_DbType = tc.Column.DbDataType;
}
}
