Hello
I have following xml bellow and want to concat together as here:
Field1 [from position 1, length varies] + " " [until position 11] +
Field2 [from position 12] + " " [until position 16]+ Field3 [from position 17, length always 10] +
" " [until position 27] + Field4

Input
<Field1>2000090691</Field1>

<Field2>0010</Field2>

<Field3>2000090690</Field3>

<Field4>0010</Field14>

concat(
substring(concat(Field1,'           '),1,11),
substring(concat(Field2,'    '),1,5),
substring(concat(Field3,'          '),1,10),
Field4
)

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