protected override void BuildLimitSql(DbExpressions.DbSqlQueryExpression exp)
{
//order by number offset 10 rows fetch next 20 rows only;
this.SqlBuilder.Append("SELECT ");
this.AppendDistinct(exp.IsDistinct);
List <DbColumnSegment> columns = exp.ColumnSegments;
for (int i = 0; i < columns.Count; i++)
{
DbColumnSegment column = columns[i];
if (i > 0)
{
this.SqlBuilder.Append(",");
}
this.AppendColumnSegment(column);
}
this.SqlBuilder.Append(" FROM ");
exp.Table.Accept(this);
this.BuildWhereState(exp.Condition);
this.BuildGroupState(exp);
List <DbOrdering> orderings = exp.Orderings;
if (orderings.Count == 0)
{
DbExpression orderingExp = DbExpression.Add(PublicConstants.DbParameter_1, DbConstantExpression.Zero, DbConstantExpression.Zero.Type, null);
DbOrdering ordering = new DbOrdering(orderingExp, DbOrderType.Asc);
orderings = new List <DbOrdering>(1);
orderings.Add(ordering);
}
this.BuildOrderState(orderings);
this.SqlBuilder.Append(" OFFSET ", exp.SkipCount.Value.ToString(), " ROWS");
if (exp.TakeCount != null)
{
this.SqlBuilder.Append(" FETCH NEXT ", exp.TakeCount.Value.ToString(), " ROWS ONLY");
}
}