WhereTerm CreateRangeTerm(PivotColumn pivotCol, PivotColumnValue pivotColValue)
{
Range step = pivotColValue.Range;
SqlExpression fieldExpr = SqlExpression.Field(pivotCol.ColumnField);
if (step.HighBound == null && step.LowBound == null)
{
throw new PivotTableException("At least one bound of a Range must be set.");
}
SqlExpression lowBoundExpr = (step.LowBound != null) ? SqlExpression.Constant(pivotCol.DataType, pivotColValue.Range.LowBound) : null;
SqlExpression highBoundExpr = (step.HighBound != null) ? SqlExpression.Constant(pivotCol.DataType, pivotColValue.Range.HighBound) : null;
WhereTerm term;
if (step.HighBound == null)
{
term = WhereTerm.CreateCompare(fieldExpr, lowBoundExpr, CompareOperator.GreaterOrEqual);
}
else if (step.LowBound == null)
{
term = WhereTerm.CreateCompare(fieldExpr, highBoundExpr, CompareOperator.Less);
}
else
{
term = WhereTerm.CreateBetween(fieldExpr, lowBoundExpr, highBoundExpr);
}
return(term);
}
/// <summary>
/// Creates a WhereTerm which checks weather a value is in a specifed range.
/// </summary>
/// <param name="expr">Expression which yeilds the value to be checked</param>
/// <param name="lowBound">Expression which yeilds the low bound of the range</param>
/// <param name="highBound">Expression which yeilds the high bound of the range</param>
/// <returns>A new WhereTerm</returns>
/// <remarks>
/// CreateBetween only accepts expressions which yeild a 'Date' or 'Number' values.
/// All expressions must be of compatible types.
/// </remarks>
public static Cond Between(Expr expr, Expr lowBound, Expr highBound)
{
Cond oper = new Cond();
oper.Term = WhereTerm.CreateBetween(expr.Expression, lowBound.Expression, highBound.Expression);
return(oper);
}
public virtual void ComplicatedQuery()
{
FromTerm tCustomers = FromTerm.Table("customers", "c");
FromTerm tProducts = FromTerm.Table("products", "p");
FromTerm tOrders = FromTerm.Table("orders", "o");
SelectQuery query = new SelectQuery();
query.Columns.Add(new SelectColumn("name", tCustomers));
query.Columns.Add(new SelectColumn(SqlExpression.IfNull(SqlExpression.Field("name", tCustomers), SqlExpression.Constant(SqlConstant.String("name"))), "notNull"));
query.Columns.Add(new SelectColumn(SqlExpression.Null(), "nullValue"));
query.Columns.Add(new SelectColumn("name", tProducts, "productName", SqlAggregationFunction.None));
query.Columns.Add(new SelectColumn("price", tProducts));
query.FromClause.BaseTable = tCustomers;
query.FromClause.Join(JoinType.Left, tCustomers, tOrders, "customerId", "customerId");
query.FromClause.Join(JoinType.Inner, tOrders, tProducts, "productId", "productId");
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Field("name", tCustomers), SqlExpression.String("John"), CompareOperator.Equal));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.String("Dohe"), SqlExpression.Field("name", tCustomers), CompareOperator.NotEqual));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Field("name", tCustomers), SqlExpression.String("J%"), CompareOperator.Like));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Date(DateTime.Now), SqlExpression.Field("date", tOrders), CompareOperator.Greater));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Number(10), SqlExpression.Number(9), CompareOperator.Greater));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Number(10), SqlExpression.Number(9), CompareOperator.GreaterOrEqual));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Number(10), SqlExpression.Number(11.5), CompareOperator.LessOrEqual));
query.WherePhrase.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Number(1), SqlExpression.Number(1), CompareOperator.BitwiseAnd));
WhereClause group = new WhereClause(WhereClauseRelationship.Or);
group.Terms.Add(WhereTerm.CreateBetween(SqlExpression.Field("price", tProducts), SqlExpression.Number(1), SqlExpression.Number(10)));
group.Terms.Add(WhereTerm.CreateIn(SqlExpression.Field("name", tProducts), SqlConstantCollection.FromList(new string[] { "Nail", "Hamer", "Skrewdriver" })));
group.Terms.Add(WhereTerm.CreateIn(SqlExpression.Field("name", tProducts), "select name from products"));
group.Terms.Add(WhereTerm.CreateNotIn(SqlExpression.Field("name", tProducts), SqlConstantCollection.FromList(new string[] { "Unkown" })));
group.Terms.Add(WhereTerm.CreateNotIn(SqlExpression.Field("name", tProducts), "select name from products"));
group.Terms.Add(WhereTerm.CreateIsNull(SqlExpression.Field("name", tProducts)));
group.Terms.Add(WhereTerm.CreateIsNotNull(SqlExpression.Field("name", tProducts)));
group.Terms.Add(WhereTerm.CreateExists("select productId from products"));
group.Terms.Add(WhereTerm.CreateNotExists("select productId from products"));
query.WherePhrase.SubClauses.Add(group);
query.OrderByTerms.Add(new OrderByTerm("name", tCustomers, OrderByDirection.Descending));
query.OrderByTerms.Add(new OrderByTerm("price", OrderByDirection.Ascending));
query.Distinct = true;
query.Top = 10;
RenderSelect(query);
}
