topic Join a table with another table using subset of first table's key in QlikView

Join a table with another table using subset of first table's key

Wed, 30 May 2012 12:21:53 GMT

Hi,

the title might be confusing but here is the idea:

I have 2 tables and I want to join both tables, but....

here is the case:

table1:

Code	Description
101.110.255	Desc1
101.100.202	Desc2
101.200.301	Desc3
202.110.111	Desc4
202.100.200	Desc5
302.300.100	Desc6

table2:

CodeGroup	GroupName
101.1	Current Asset
101.200	Fixed Asset
202.11	Income
202.10	Other Income
302.3	Other Income

The expected result is:

Code	Description	CodeGroup	GroupName
101.110.255	Desc1	101.1	Current Asset
101.100.202	Desc2	101.1	Current Asset
101.200.301	Desc3	101.200	Fixed Asset
202.110.111	Desc4	202.11	Income
202.100.200	Desc5	202.10	Other Income
302.300.100	Desc6	302.3	Other Income

I want to show which code belong to which CodeGroup and GroupName.

Thanks for your help

Re: Join a table with another table using subset of first table's key

chematos — Wed, 30 May 2012 12:52:59 GMT

Hi,

If that are the only data you have to join, you could create two fields in both tables with the first 5,6 characters so you will have the Keys to join the tables.

Table1:

Load *,

Left(Code,5) as %Key,

Left(Code,6) as %Key2

From TABLE1;

Left join(Table1)

Load *,

if(len(CodeGroup)=5,Left(CodeGroup,5)) as %Key

From TABLE2;

Left join(Table1)

Load *,

if(len(CodeGroup)>5,Left(CodeGroup,6)) as %Key2

From TABLE2;

I ' ve don't try this, hope this helps

Join a table with another table using subset of first table's key

flipside — Wed, 30 May 2012 14:19:06 GMT

Hi Reynald,

You can build an intermediate lookup table to join the two tables as this ...

Lkp:

LOAD Code, text(left(Code,5)) as Key resident Table1;

LOAD Code, text(left(Code,6)) as Key resident Table1;

LOAD Code, text(left(Code,7)) as Key resident Table1;

inner join (Lkp)

LOAD text(CodeGroup) as Key, GroupName resident Table2;

Note the text statement around the Code field as the CodeGroup values are numeric whereas the Codes are not.

flipside

Join a table with another table using subset of first table's key

Thu, 31 May 2012 14:41:31 GMT

Hi, thanks for ur help btw.

I havent tried any of the solution

but once Ive tried, i will inform my progress.

Thanks anyway

Join a table with another table using subset of first table's key

Fri, 01 Jun 2012 09:36:40 GMT

Thanks flipside,

Your solution worked like charm.

Thank you so much.