Load data that exists between pairs of rows

[Prog]

Hi there,

I have a table like the following (generalised data):

Positions:

Position	String
1	a
2	b
3	c
4	d
5	e
6	f
7	g
8	a
9	h
10	d

With an extract of relevant pairs as follows (assume that a and d are pairs that indicate the start and end of relevant data):

Pairs:

Position	String	StringCount
1	a	1
4	d	1
8	a	2
10	d	2

These tables continue for multiple rows, and there are multiple instances of "a" and "d" with data in between.

The positions and counts of a and d can change depending on the source data.

I wish to load the above table but include the data that appears between the pairs, i.e:

Pairs:

Position	String
1	a
2	b
3	c
4	d
8	a
9	f
10	d

What is the easiest way to solve this? I figure I might be able to use a loop that relies on the StringCount, but wondering what ideas you have.

Cheers,

Prog

[Prog]

How I solved this using a loop:

Let vPairAmount = Peek('StringCount',-1,'Pairs');

For i = 1 to $(vPairAmount)

Concatenate (Pairs)
Load
Position,
String
Resident Positions
Where Position > Peek('Position',$(i)+$(i)-2,'Pairs') and Position < Peek('Position',$(i)+$(i)-1,'Pairs');

Next i;