<div>
Are you doing any record selection? 
 
(Post the SQL for the report)
</div>

<div>
Yes: 
 
not ({TProduct.Sales_Cost_Centre} in [&quot;103&quot;, &quot;105&quot;, &quot;140&quot;, &quot;160&quot;, &quot;180&quot;]) and 
{TProduct.Product_Type} = &quot;f&quot; and 
{TInvoice.Invoice_Date} &gt;= DateTime (2007, 01, 01, 00, 00, 00) and 
month({TInvoice.Invoice_Date})=month (today) or if day(today)&lt;7 then month({TInvoice.Invoice_Date})=month (today)-1 and 
{Customer.Company} = 1 

</div>

<div>
I have modified the Record Selection to only show Invoices for yesterday. 
 
This the SQL Query: 
 
&nbsp;SELECT &quot;TInvoice&quot;.&quot;Invoice&quot;, &quot;TInvoice&quot;.&quot;Invoice_Date&quot;, &quot;TInvoice&quot;.&quot;Currency&quot;, &quot;TInvoice&quot;.&quot;Currency_Rate&quot;, &quot;TProduct&quot;.&quot;Product&quot;, &quot;Brand&quot;.&quot;Description&quot;, &quot;Product_Group&quot;.&quot;Description&quot;, &quot;Customer&quot;.&quot;Name&quot;, &quot;TInvoice&quot;.&quot;Base_Invoice_Value&quot;, &quot;Area&quot;.&quot;Area&quot; 
&nbsp;FROM &nbsp; (&quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;Area&quot; &quot;Area&quot; INNER JOIN &quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;Customer&quot; &quot;Customer&quot; ON (&quot;Area&quot;.&quot;Company&quot;=&quot;Customer&quot;.&quot;Company&quot;) AND (&quot;Area&quot;.&quot;Area&quot;=&quot;Customer&quot;.&quot;Area&quot;)) LEFT OUTER JOIN (((&quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;TProduct&quot; &quot;TProduct&quot; INNER JOIN &quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;TInvoice&quot; &quot;TInvoice&quot; ON (((((&quot;TProduct&quot;.&quot;Company&quot;=&quot;TInvoice&quot;.&quot;Company&quot;) AND (&quot;TProduct&quot;.&quot;Product&quot;=&quot;TInvoice&quot;.&quot;Product&quot;)) AND (&quot;TProduct&quot;.&quot;Matrix_Code_1&quot;=&quot;TInvoice&quot;.&quot;Matrix_Code_1&quot;)) AND (&quot;TProduct&quot;.&quot;Matrix_Code_2&quot;=&quot;TInvoice&quot;.&quot;Matrix_Code_2&quot;)) AND (&quot;TProduct&quot;.&quot;Matrix_Code_3&quot;=&quot;TInvoice&quot;.&quot;Matrix_Code_3&quot;)) AND (&quot;TProduct&quot;.&quot;Matrix_Code_4&quot;=&quot;TInvoice&quot;.&quot;Matrix_Code_4&quot;)) INNER JOIN &quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;Brand&quot; &quot;Brand&quot; ON (&quot;TProduct&quot;.&quot;Company&quot;=&quot;Brand&quot;.&quot;Company&quot;) AND (&quot;TProduct&quot;.&quot;Brand&quot;=&quot;Brand&quot;.&quot;Brand&quot;)) INNER JOIN &quot;BOOMLive&quot;.&quot;dbo&quot;.&quot;Product_Group&quot; &quot;Product_Group&quot; ON (&quot;TProduct&quot;.&quot;Company&quot;=&quot;Product_Group&quot;.&quot;Company&quot;) AND (&quot;TProduct&quot;.&quot;Product_Group&quot;=&quot;Product_Group&quot;.&quot;Product_Group&quot;)) ON (&quot;Customer&quot;.&quot;Customer&quot;=&quot;TInvoice&quot;.&quot;Customer&quot;) AND (&quot;Customer&quot;.&quot;Company&quot;=&quot;TInvoice&quot;.&quot;Company&quot;) 
&nbsp;WHERE &nbsp;(&quot;TInvoice&quot;.&quot;Invoice_Date&quot;&gt;={ts '2009-01-22 00:00:00'} AND &quot;TInvoice&quot;.&quot;Invoice_Date&quot;&lt;{ts '2009-01-23 00:00:00'}) 
 

</div>

<div>
Dear peter, &nbsp;I think I am showing my lack of experience on this topic. 
 
After stripping back the report to basics, I am starting to understand why the Left Join is not working. It's because I have applied a selection criteria on the TInvoice table. 
 
Therefore I need some suggestions how do I display on the report ALL the customers but only Invoice transactions for the last 7 days. &nbsp;Still showing all the customer names and values of 0.00 for the customers that did not product any invoice transaction in the last 7 days. 
 
Please advise.
</div>

<div>
As you have discovered you cannot do selection from the right hand side of a Left join. &nbsp;If you do, it ereberts to an inner join. 
 
The way through this is to create a query on the right-side table first, which does the selection, , and then join the left-side table to the query. 
 
So in a simple situation you might have... 
 
Select tbl1.* , q1.* from tbl1 
Left join 
(Select * from tbl2 where field1 = 999) as q1 
On tbl1.idfield = q1.idfield 
 
 
and NOT... 
Select tbl1.* , tbl2.* from tbl1 
Left join tbl2 
On tbl1.idfield = tbl2.idfield 
where tbl2.field1 = 999 
 

</div>

<div>
You can also do it this way 
 
Select tbl1.* , tbl2.* from tbl1 
Left join tbl2 
On tbl1.idfield = tbl2.idfield 
AND &nbsp;tbl2.field1 = 999 
 
mlmcc 

</div>

<div>
As the others have stated, applying a filter to a table that has been left joined implicitly turns the join into an Inner Join. &nbsp;This is because you remove all the rows that would otherwise be NULL when you explicitly filter against actual values. &nbsp;After all, if &nbsp;you specify that a field in the left joined table has a value, it obviously can't be NULL. 
 
Knowing this, you can simply do a check for NULLs in the table that has been left joined, something like this. &nbsp;Here's a high level example, assuming Table1 is the left table and Table 2 is the right table to which you've left outer joined: 
 
 
 

<pre><code class="code-10 nolinks" id="code-233800">(
IsNull({Table2.Field1}
Or {Table2.Field2} = 'ABC123'
)
And {Table1.Field1} = 'B-I-N-G-O'
 
//In this example, stipulating that a field from the left joined table can be NULL allows both the NULL records from the left joined table
//and the other records that have been explicitly filtered
//due to the manner in which Crystal Reports handles NULL checking in the selection criteria, I put the NULL check first
//please note, I've also encapsulated the entire filter against the left joined table in parentheses, so that it's evaluated as one statement
</code></pre>
</div>

<div>
Thanks rhinok , mlmcc and peter. 
 
I completely understand the concept how you can't apply a left join to a table you are applying a selection criteria too. 
 
What I don't understand is how to get around this. &nbsp;You can given me example SQL code. &nbsp;And I can understand your basic examples. &nbsp;But when I am designing a report with Crystal Reports I have no idea how to make the database links with SQL Code. &nbsp;I only know how to link the fields using the &quot;Database Expert&quot;. &nbsp;I've tried all sorts of things, like putting linking from the transactions table to the customer table and the other way around and applying Left Joins , Right Joins and Full outer Joins. 
 
Am I wasting my time with the &quot;Database Expert&quot; in Crystal Reports and there's another way to create my links???? 
 
Thanks in advance.
</div>

<div>
<div class="content wysiwyg-content">
I would like to show transactions for all customers and the report should show all customers including those with no records. 
 
I need some suggestions why my Left Join is not working. &nbsp; 
I have attached an image of the links. 
 
Thanks 
Mchallinor 
 
Crystal Reports XI 
Database = SQL via ODBC connection 
<a href="https://filedb.experts-exchange.com/incoming/2009/01_w04/98084/links.JPG" target="_blank" class="file-inline" title="Crystal Reports Links (77 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>links.JPG</a>
</div>
</div>

links.JPG

I would like to show transactions for all customers and the report should show all customers including those with no records.

I need some suggestions why my Left Join is not working.  
I have attached an image of the links.

Thanks
Mchallinor

Crystal Reports XI
Database = SQL via ODBC connection

Please help with Left Join in Crystal Reports

A database report is the formatted result of database queries and contains useful data for decision-making and analysis. Most good business applications contain a built-in reporting tool; this is simply a front-end interface that calls or runs back-end database queries that are formatted for easy application usage.

DB Reporting Tools

Crystal Reports is a business intelligence application from SAP SE. It is used to graphically design data connections and report layouts from a wide range of data sources including Excel spreadsheets, Oracle, SQL Server databases and Access databases, BusinessObjects Enterprise business views, and local file-system information. Report designers can place fields from these sources on the report design surface, and can also deploy them in custom formulas (using either BASIC or Crystal's own syntax), which are then placed on the design surface. Crystal Reports also supports subreports, graphing, and a limited amount of GIS functionality.