SelectQueryFluentBuilder.Join(String, SqlJoinType, String, String) Method

Joins two tables. Allows you to specify the join operation type and column names by which the tables should be joined.

Namespace: DevExpress.DataAccess.Sql

Assembly: DevExpress.DataAccess.v24.2.dll

Declaration

C#

public SelectQueryFluentBuilder Join(
    string tableName,
    SqlJoinType joinType,
    string parentColumnName,
    string nestedColumnName
)

VB.NET

Public Function Join(
    tableName As String,
    joinType As SqlJoinType,
    parentColumnName As String,
    nestedColumnName As String
) As SelectQueryFluentBuilder

Parameters

Name	Type	Description
tableName	String	The name of the table (nested table) with which the current table (parent table) of the query builder should be joined.
joinType	SqlJoinType	The join operation type.
parentColumnName	String	The parent table column name.
nestedColumnName	String	The nested table column name.

Returns

Type	Description
SelectQueryFluentBuilder	A query builder that contains the join operation result.

Example

C#

using DevExpress.DataAccess.Sql;
// ...
var query = SelectQueryFluentBuilder
    .AddTable("Categories")
    .SelectColumns("CategoryID", "CategoryName")
    .Join(tableName: "Products",
        joinType: SqlJoinType.RightOuter,
        parentColumnName: "CategoryID",
        nestedColumnName: "CtgID")
    .Build("Categories");

VB.NET

Imports DevExpress.DataAccess.Sql
' ...
Dim query = SelectQueryFluentBuilder.
    AddTable("Categories").
    SelectColumns("CategoryID", "CategoryName").
    Join(tableName:="Products",
         joinType:=SqlJoinType.RightOuter,
         parentColumnName:="CategoryID",
         nestedColumnName:="CtgID").
    Build("Categories")