/// <summary> /// Creates a WhereTerm which encapsulates SQL NOT EXISTS clause /// </summary> /// <param name="subQuery">Sub query for the NOT EXISTS clause</param> /// <returns></returns> public static Cond NotExists(Select subQuery) { Cond oper = new Cond(); oper.Term = WhereTerm.CreateNotExists(subQuery.Query); 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); }
/// <summary> /// Creates a WHERE clause for a multivalued attribute /// </summary> /// <param name="builder">The builder for this query</param> /// <param name="parameterNames">The parameters to evaluate against</param> /// <returns>The WhereClause object for this query</returns> private WhereClause CreateWhereClauseforAVPTarget(DBQueryBuilder builder, IList <string> parameterNames) { FromTerm fromTable; fromTable = builder.GetNextAVPTableReference(this.SearchAttribute.TableName); WhereClause clause = new WhereClause(WhereClauseRelationship.And); if (this.Operator != ValueOperator.NotPresent) { string paramName = builder.AddParameter(this.SearchAttribute.Name); WhereTerm attributeNameTerm = WhereTerm.CreateCompare(SqlExpression.Field("attributeName", fromTable), SqlExpression.Parameter(paramName), CompareOperator.Equal); clause.Terms.Add(attributeNameTerm); } if (this.Operator == ValueOperator.IsPresent) { clause.Terms.Add(WhereTerm.CreateIsNotNull(SqlExpression.Field(this.SearchAttribute.ColumnName, fromTable))); } else if (this.Operator == ValueOperator.NotPresent) { string sql = this.CreateSubSelectStatementForMVNotExists(builder); clause.Terms.Add(WhereTerm.CreateNotExists(sql)); } else { WhereClause subClause = new WhereClause(WhereClauseRelationship.Or); switch (this.Operator) { case ValueOperator.And: case ValueOperator.Contains: case ValueOperator.GreaterThan: case ValueOperator.GreaterThanOrEq: case ValueOperator.LessThan: case ValueOperator.StartsWith: case ValueOperator.EndsWith: case ValueOperator.LessThanOrEq: foreach (string parameterName in parameterNames) { subClause.Terms.Add(WhereTerm.CreateCompare(SqlExpression.Field(this.SearchAttribute.ColumnName, fromTable), SqlExpression.Parameter(parameterName), this.CompareOperator)); } break; case ValueOperator.Equals: subClause.Terms.Add(WhereTerm.CreateIn(SqlExpression.Field(this.SearchAttribute.ColumnName, fromTable), parameterNames.ToCommaSeparatedString())); break; case ValueOperator.NotEquals: string sql = this.CreateSubSelectStatementForMVNotEquals(builder, parameterNames); clause.Terms.Add(WhereTerm.CreateNotExists(sql)); break; default: throw new InvalidOperationException(); } clause.SubClauses.Add(subClause); } return(clause); }