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Hi,
I have several joined tables One master table and others which I use the data from too.
Table 1:
ID Colour
1 Red
2 Orange
3 Purple
4 Blue
5 Brown
Left Join
Table 2:
ID Name
1 John
5 Jane
I have many other columns of data and use a left join as I use data in both tables. I want to identify, the amount of data in table 2 which is not in table 1. i.e. identify that 2,3,4 are not in table 2 but in Table1 so 3 fields are missing would be my end goal here.
Thanks
Create a flag while doing a left join
Table1:
LOAD ...
FROM Table1
Left Join (Table1)
LOAD *,
1 as FlagTemp
FROM Table2;
Now you can create this:
FinalTable:
LOAD *,
If(FlagTemp = 1, 1, 0) as Flag
Resident Table1;
DROP Table Table1;
DROP Field FlagTemp;
Now you have you flag where 1 is data available in Table2 and 0 where data isn't available.
AM not sure but
table:
LOAD * INLINE [
ID , Colour
1 , Red
2 , Orange
3 , Purple
4 , Blue
5 ,Brown
];
Left Join
Table2:
LOAD * INLINE [
ID , Name
1 , John
5 , Jane
]
Where not Exists(ID) ;
Try like this
Table1:
LOAD * INLINE [
ID,Colour
1,Red
2,Orange
3,Purple
4,Blue
5,Brown
];
Table2:
LOAD * Inline
[
ID,Name
1, John
5,Jane
];
Left Join(Table1)
LOAD ID, 1 as flag Resident Table2;
Table3:
LOAD ID as MissingID Resident Table1 where flag <> 1;
Create a flag while doing a left join
Table1:
LOAD ...
FROM Table1
Left Join (Table1)
LOAD *,
1 as FlagTemp
FROM Table2;
Now you can create this:
FinalTable:
LOAD *,
If(FlagTemp = 1, 1, 0) as Flag
Resident Table1;
DROP Table Table1;
DROP Field FlagTemp;
Now you have you flag where 1 is data available in Table2 and 0 where data isn't available.
This has worked great.
Thanks everyone for your help