 lch chun ca mt tp hp theo mu, b d liu trong mt ct ca ma m d liu, theo mu kic ch nh.  : = DPRODUCT(database, field, criteria)  trong mt ct ca ma m d liu, theo mu kin c ch nh. m s ng trong b c mng: {=SUM(IF(ISBLANK(range), 1, 0))} v liu cn kim tra. m s a nh u s c mng: {=SUM(IF(ISNUMBER(range), 0, 1))} v liu cn kim tra. m s  li c mng: {=SUM(IF(ISERROR(range), 1, 0))} v liu cn kim tra. g. HÀM XỬ LÝ VĂN BẢN VÀ DỮ LIỆU Bao g m, thay th, chuyi chu bn trong Excel.    double- single-byte cho nh s dng b  double-byte. : = ASC(text)  hoc tham chin ma ch. Na bt k mu t  thuc loi double- c chuyi. : = ASC("Excel") = Excel =CHAR Chuyn s   p =CODE Tr v  c   i nhiu chui li vi nhau c: =CONCATENATE(text1,text2, ) : =CONCATENATE("Gi-  tuyt vi ca b -  tuyt vi ca bn =DOLLAR Chuynh dng s n t   i vi nhau. c: =EXACT(text1,text2) t ch  hoa. Nu 2 chui text1, text2 gi tr v TRUE; n tr v tr FALSE : =EXACT("Gi =EXACT("Gi =FIXED Chuyn mt s nh dn  t n X  t chui =LOWER Chuy ng. =PROPER Chuy u mi t  hoa  t mt chui con (substring) t mt chui c: =MID(text, start_num, num_chars])=MID(X, m, n)  trong chui X bu t v  m. text: chun ct start_num: v   num_chars: s  ca chui con c - num_chars ph  - start_num ph  - Nu start_num l  ca chut qu tr v s i rng :    thay th mt phn ca chui bng mt chu  c ch nh c: =REPLACE(old_text, start_num, num_chars, new_text) old_text: chun cc x  start_num: v  thay th  num_chars: s  ca chui cc thay th new_text: chun s thay th cho s  n bhars c bc bu t   - B nh v u (start_num) -  nh s  ca chui s c thay th (num_chars) :  thay s 2007 b   Vi A1 = Expense Budget for 2007   t phi ca mt chui mt hoc nhi  ch nh ca bn c: =RIGHT(text [,num_chars])=RIGHT(X,n)  t i sang cn X text: chun c num_chars: s  ci ca chui text, m - num_chars ph  - Nu num_chars l a chut qu tr v s  chui text :  =REPT Lp li mt chui =SUBSTITUTE Thay th mt chunh    u ca mt chui con (substring) trong mt chui c: =FIND(find_text, within_text [, start_num]) =SEARCH(find_text, within_text [, start_num]) find_text: chun ci con) within_text: chun cha chui ci m) start_num: v i within_text (m Mt s  - Kt qu ct con s, ch v  start_num) ca find_text trong within_text - t chui bt k. : SEARCH("e", "Expenses") s cho kt qu  - t chut ch hoa, ch ng. : FIND("e", "Expenses") s cho kt qu  - N i #VALUE -   i di - Vu mu * ho  ~?) =TEXT Chuyn mt s sang text.  ng: Tr v mt chui nu tr tham chic li, s tr v chui rng - Kim tra d liu kiu text c: =T(value)    thay th mt chung mt chu   s d c: =SUBSTITUTE(text, old_text, new_text [,instance_num]) text: chun gc, cc x  old_text: chun cc thay th new_text: chun s thay th  instance_num: s ln thay th old_text bng new_text, nu b t c c s c thay th bng new_text :  thay s 2007 b  =SUBSTITUTE("Expense Budget for 2007", "2  CHUNG CHU  m mt s     ng  SUBSTITUTE.  tri. =UPPER Chuy    i mt chui din cho mt s u s c: =VALUE(text) text phnh dng sc bt k mt th nhn. Nu 2 chui text1, text2 gi tr v TRUE; n tr v tr FALSE :   6500 trong SQA6500, b  =RIGHT(" t qu c s  dng text, b ng tr  vc.   i "6500", bn phng s:  y gi b cng tr  t h   ng Anh, b m)  ng khong tra h    n h.  ly phc sau (gi s h m  cell A2): =LEFT(A2, FIND(" ", A2) - 1)    tr t    th 5, FT() s  (= 5-1).  ly phn h c: =RIGHT(A2, LEN(A2) - FIND(" ", A2)) Bn t d t h vng Anh, phc vit tt) Ct h    phm. Gi s H m      name): =LEFT(A2, FIND(" ", A2) -  c FIND(" ", A2) s cho kt qu  a khong tr Karen).   a khong trng th n ph c ng kt qu ca FIND(" ", A2) c =FIND(" ", A2, FIND(" ",A2) + 1) Rt qu c  n H (last name): =RIGHT(A2, LEN(A2) -     a du chm (.) r thc c  c du chm: =MID(A2, FIND(".", A2) -     khi gi  : AND(logical1 [, logical2] [, logical3] ) logical: Nhng biu thc s  Nu tt c u th tr v   cu th tr v  FALSE. B t c ch n muc  : =IF(AND(B2 > 0, C2 > 0), "1000", "No bonus") N   C2 lnu ch cn mc C2 nh ng chi c.  nhp trc tic, Excel s hit biu th    =IF (logic kiu ki  thc : u ki  2) Nu ki v  c li  2 p lun: "N u. Mn nht : IF(logical_test, value_is_true) logical_test: Mt biu thc s   tr v khi biu thc ki : =IF(A1 >= 1000, "It's big!")   A1 lc bt qu nhc s  u A1 nh t qu s  M i s bt b a mt danh mc n mung m  u chnh chic kinh doanh cng d phn m doanh s ng du hiu B u: =IF(cell<0, flag) V doanh s n muu hi , cell cha  doanh s  =IF(B2<0, "<<<<<")  nhng du "<" t l thun vi mc st gim doanh s   REPT(), vc: REPT("<" , B2 * -100)   ca B2 vi -100, b ng hp B2<0  th hin m st gim doanh s ca tng m  =IF(B2<0, REPT("<" , B2 * -100)) Nhng nhau Trong cuc sy ai d p nhn chuyn "mu", ph n. ng s u, nu ru nhin! y. Gi sp loi hc tp, n gii, v   nh    i g    ng s d xp lo   s hu kin a. y l  c: =IF(A1 >= 1000, "Big!", "Not big") Bi gi ng l   t danh hi =IF(A1 >= 1000, IF(A1 >= 10000, "Really big!!", Big!"), "Not big") Ho c tui nh), v xem: =IF(A1 >= 1000, "Big!", IF(A1 < 100, "Small", "Not big")) Bn     a IF().  t c li: =IF(A1 >= 1000, IF(A1 >= 10000, "Really big!!", Big!"), IF(A1 < 100, "Small", "Not big")) n mng d ngou b c , Excel s u, hon kt qu y.  . mu t  thuc loi double- c chuyi. : = ASC(" ;Excel& quot;) = Excel =CHAR Chuyn s   p =CODE Tr v  c. g m, thay th, chuyi chu bn trong Excel.    double- single-byte cho nh. nh ng chi c.  nhp trc tic, Excel s hit biu th   