internal override SqlExpression VisitFunctionCall(SqlFunctionCall fc)
{
SqlExpression first = base.VisitFunctionCall(fc);
if (first is SqlFunctionCall)
{
var expr = (SqlFunctionCall)first;
if (expr.Name == "LEN")
{
SqlExpression expression2 = expr.Arguments[0];
if (expression2.SqlType.IsLargeType && !expression2.SqlType.SupportsLength)
{
first = this.sql.DATALENGTH(expression2);
if (expression2.SqlType.IsUnicodeType)
{
first = sql.ConvertToInt(sql.Divide(first, sql.ValueFromObject(2, expression2.SourceExpression)));
}
}
}
Type closestRuntimeType = expr.SqlType.GetClosestRuntimeType();
//if (expr.ClrType != closestRuntimeType)
if (Type.GetTypeCode(expr.ClrType) != Type.GetTypeCode(closestRuntimeType))
{
first = sql.ConvertTo(expr.ClrType, expr);
}
}
return(first);
}