How to modify an INDEX MATCH formula over a wider range?

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Originally Posted by djarcadian

=INDEX(A:A,MATCH(C1,C:K,0)

This returns an error. How can I modify it so it tries to find C1 within the C:K range?

If that formula did work the result would always be the value of cell A1.

You want to look in column C for a match of cell C1, so C1 will match C1.

Try this...

Data Range

	A	B	C	D	E	F	G	H	I	J	K
1		-----	XXX	Here
2
3
4
5	This		aaa	sss	ddd	fff	eee	rrr	ttt	yyy	uuu
6	That		dft	oub	lol	ujk	rrh	qqq	ppp	ooo	iii
7	The		ww	y	rftg	t	qw	oip	ououu	iklo	ghqw
8	Other		w	kl	dnjk	uh	ewe	q	w	vbcx	zsxcd
9	Here		wwww	j	nmkl	llllllll	fghy	XXX	fh	urf	kpw
10	There		fgty	hbnj	fgh	jntu	kl	de	dghhj	tghhv	drthj

This array formula** entered in D1:

=INDEX(A:A,MAX((C5:K10=C1)*ROW(C5:K10)))

** array formulas need to be entered using the key
combination of CTRL,SHIFT,ENTER (not just ENTER).
Hold down both the CTRL key and the SHIFT key
then hit ENTER.

In the MAX function...

MAX((C5:K10=C1)*ROW(C5:K10))

...You should avoid using entire columns as range references. Use smaller specific ranges.

Why not find out where exactly the value is if it is in the range?

Formula:

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....confirmed by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. You will know the array is active when you see curly braces { } appear around your formula. If you do not CTRL+SHIFT+ENTER you will get an error or a clearly incorrect answer. Press F2 on that cell and try again.

If the value is found, the cell reference for the value is returned. If the value isn't in the range, Not Found is returned.

	C	D	E	F	G	H	I	J	K
1	n	$E$6
2
3
4
5	a	g	m	s	y	ee	kk	qq	ww
6	b	h	n	t	z	ff	ll	rr	xx
7	c	i	o	u	aa	gg	mm	ss	yy
8	d	j	p	v	bb	hh	nn	tt	zz
9	e	k	q	w	cc	ii	oo	uu	aaa
10	f	l	r	x	dd	jj	pp	vv	bbb