without是什么意思SQL语句查询中常用的函数

2021年1月19日发(作者：pun)
promote the extensi
on
of strictly a
dministeri
ng the
party grass
-roots,
but al
so the educati
onal
practi
ce of t
he mass li
ne
of the party and
hree
educati
on results a
chi
eved furt
her inherited
and expa
nde
d. To realize
ducation is a
necessary
sol
ution to the
present problems
of party constr
ucti
on. Stre
ngthe
n pr
oblem
consci
ousne
ss a
nd i
nsiste
d on pr
oblem
-orie
nted,
is full
of strictly admi
nisteri
ng the
party since t
he party's 18 a
distinctive feature, a
succe
ssful ex
perience. S
ecretary Wa
ng noted t
hat some
party member
s still have
political awar
ene
ss, la
ck of political re
sponsi
bility issue
s, party awar
ene
ss a
nd
consci
ousne
ss of t
he pr
oblem
belief does
not really
believe
, slim does
not a
ctual
ly f
ix probl
ems, outspoke
n, and jum
p on the
asse
ssment
of the
party's polici
es, a
nd
so
on.
Bi
Lifu Se
cretary poi
nted
out t
hat a quarter
of the economic sit
uation is v
ery serious, t
here is
pressure
on e
nvironme
nt, se
asonal factor
s and ot
her obje
ctive reasons, but mainly subjectiv
probl
em, is the
problem of party members and ca
dres. S
ome depressed, negative sla
ck,
not responsi
ble, ... Doubl
e six, one, a
nd tw
o took the lea
d,
buil
d energy
burst,
Hong
sha
n di
strict, e
conomic
prosperity, eco-liva
ble,
civilize
d and harmonio
us i
sland. It
certainly
can
not be se
parated from the
whole
area 646 gra
ss-r
oots
party orga
nizations a
nd 14,146 mem
bers of
broad
partici
pation and support.
Through the
nd
education, so that every
cell
of the party
health,
every organi
zation is strong, so that all mem
bers of the vanguard and exemplary role, all the fighting bastion
role of grass
-roots party
organizati
ons i
nto full
play so that we
can
cross the Rapids,
overcome all difficulties a
nd t
he smooth real
izatio
n of the
hirteen- Five
cond,
basi
c learning, focus
on l
earni
ng educati
on must understa
nd the learning conte
nt and learni
ng styles

ords
are importa
nt information inside i
s very large, ca
pture
profound
work trut
h in life. For exam
ple, I
often say that the g
ood Car
penter
NAO Carpe
nter, w
hy do
some carpe
nters made fur
niture to
have every
body like
s it, Car
penter we
are not
willing to l
ook for
him? are apparently two
people
high and low technology, dig int
o the
deep i
s firmer when
bot
h of
hi
s apprentices are not solid, t
here is
no good that way. Luba
n art of story primary
school
are learn
had, first after six mark test practi
ce conduct, and pra
ctice
cultivation, a
nd pra
ctice
persevera
nce
, and practi
ce pati
ence, the
n with
seven
days seve
n nig
ht mill axe theory arme
d, and unity acti
on, seriously lear
ning
XI Ge
neral Secretary
on reform development sta
ble, a
nd Interior di
plomati
c defense, a
nd rul
e party ruli
ng army of important t
hought, seri
ously learning to
XI comrade for Ge
neral Se
cretary of Ce
ntral ruling a
cting
political new
conce
pt ne
w thought new strategy, seriously lear
ning
XI Ge
neral Secretary
study i
n Inner M
ongoli
a importa
nt spe
ech
spirit,
Gui
de party member
s and a dee
p under
standi
ng of a seri
es of important spee
che
rich connotation and core idea
s, w
hich began
so thoroughly Marxist
positions

一、字符转换函数

1
、
ASCII()
返回字符表达式最左端字符的
ASCII < br>码值。在
ASCII
（）函数中，纯数字的字符
串可不用‘’括起来，但含其它 字符的字符串必须用‘’括起来使用，否则会出
错。


2
、
CHAR()
将
ASCII
码转换为字符。如果没有输入
0 ~ 255
之间的
ASCII
码值，
CHAR
（）

返回
NULL
。


3
、
LOWER()
和
UPPER()
LOW ER()
将字符串全部转为小写；
UPPER()
将字符串全部转为大写。


4
、
STR()
把数值型数据转换为字符型数据。

STR ([
，
length[
，
]])
length
指定返回的字符串的长度，
decimal
指定返回的小数位数。如果没有指
定长度，缺省的
length
值为
10
，
decimal
缺省值为
0
。

当
length
或者
decimal
为负值时，返回
NULL
；

当
length
小于小数点左边（包括符号位）的位数时，返回
length
个
*
；

先服从
length
，再取
decimal
；

当返回的字符串位数小于
length
，左边补足空格。


二、去空格函数

1
、
LTRIM()
把字符串头部的空格去掉。


2
、
RTRIM()
把字符串尾部的空格去掉。


三、取子串函数

1
、
left()
LEFT (
，
)
返回
character_expression
左起
integer_expression
个字符。


2
、
RIGHT()
RIGHT (
，
)
返回
character_expression
右起
integer_expression
个字符。


3
、
SUBSTRING()
SUBSTRING (
，

，
length)
返回从字符串左边第
starting_ position
个字符起
length
个字符的部分。


四、字符串比较函数

1
、
CHARINDEX()
o sum up, i
s divi
ded i
nto 9 main
parts: 1. with regard to
persisti
ng and devel
opi
ng sociali
sm with Chine
se characteri
stics.
18 si
nce t
he XIOn more tha
n one occasi
on, General Secretary of the
histori
cal origi
n and devel
opme
nt process of sociali
sm with C
hine
se characteristi
cs, t
he roa
d of socialism
with Chi
nese characteristi
cs, System Info, sy
stem, uphol
d and devel
op t
he understa
ndi
ng of socialism wit
h Chine
se characteristi
cs is
determine
d to have
bee
n profoundly expounde
d, further stre
ngthe
ned t
he party a
nd the pe
ople a
dher
e to and devel
op t
he confide
nce
and
determinati
on
of the socialism with
Chi
nese
chara
cteristics.
XI Ge
neral Secretary's
spee
ch i
n this regar
d include the
people's year
ning for a better life, that is our g
oal, cl
ose
ly focus on t
he dev
elopment of sociali
sm with Chine
se characteristi
cs st
udy a
nd publi
cize t
he spirit of party 18, t
he unwaveringly a
dhere t
o the d
evelopme
nt of socialism wit
h Chi
nese characteristi
cs, the
persi
stence and good use of Ma
o Ze- Dong's t
hought of soul.
2. with regard t
o the Chinese
dream of realizi
ng the great rejuvenati
on
of the Chine
se nati
on.
18 cl
osi
ng soon, t
he ne
w Ce
ntral coll
ective lea
dership w
he
n they visite
d the ex
hibiti
on of the roa
d to recovery,
XI,
General Se
cretary of the
solem
n de
claration
nation of the
Chi
nese
nati
on, the greatest dream
of the Chine
se nati
on i
n moder
n times.
hou, on more t
han
one
occasi
on, General Se
cretary expounde
d the scie
ntific connotation of Chine
se dream, rea
lize the
Chi
nese dream must take the road, carry forwar
d the spirit and cohe
sion of Chine
se force
s, gradually formed
the Chi
na dr
eam, a strategic thoug
ht. And practi
ce wit
h the
Chi
nese
dream, reflects t
he hi
story of the
new sessi
on
of the CPC Central Committee, and conforms to the devel
opme
nt trend a
nd t
he people hope,
embodies t
he greatest common
divisor and the
conse
nsus of Chine
se pe
opl
e at home a
nd abr
oad, inspiring all
pe
ople
s forging ahead i
n unity, the spirit
of unswervingly foll
ow the road
of socialism wit
h
Chinese
chara
cteristics flags and hig
h melody.
This a
spe
cts
XI Ge
neral Secretary
of spe
ech main i
ncl
udi
ng achieved
Chi
nese great revival i
s Chine
se modern yilai m
ost great of dream i
n 12t
h session nati
onal
people's
Congress first times
Conference Sha
ng of speech work t
o dream int
o really in
chieve
d China
dream of vivid
practice in t
he flying youth dr
eam achieved
Chi
na dream
not only benefit pe
opl
e, and benefit worl
d pe
opl
e innovation due its S
hi, dre
am suita
ble have it
s potential a
chieve
d Chine
se great revival is
bot
h at home a
nd
abroa
d Chinese
chil
dren
common of dream,.
3. on deepeni
ng reform. 18 si
nce t
he
XI Ge
neral Secr
etary for the first time to Study on t
he choi
ce
of the Guangdong, unequivocally express the
unswervingly foll
ow t
he roa
d of reform and openi
ng up power determi
nation and courage. P
arty's 18 sessi
on a
dopted a
decision to
deepen reform,
ope
ned
a new journey for dee
pening the reform in our countr
y. Central
ha
s hel
d 22 time
s full de
epe
ning reform le
d Group
Confere
nce,
considered thr
oug
h more tha
n 100 mor
e items important reform pr
ogramme, devel
ope
d introduced mor
e than 800 over
promote the extensi
on
of strictly a
dministeri
ng the
party grass
-roots,
but al
so the educati
onal
practi
ce of t
he mass li
ne
of the party and
hree
educati
on results a
chi
eved furt
her inherited
and expa
nde
d. To realize
ducation is a
necessary
sol
ution to the
present problems
of party constr
ucti
on. Stre
ngthe
n pr
oblem
consci
ousne
ss a
nd i
nsiste
d on pr
oblem
-orie
nted,
is full
of strictly admi
nisteri
ng the
party since t
he party's 18 a
distinctive feature, a
succe
ssful ex
perience. S
ecretary Wa
ng noted t
hat some
party member
s still have
political awar
ene
ss, la
ck of political re
sponsi
bility issue
s,
party awar
ene
ss a
nd
consci
ousne
ss of t
he pr
oblem
belief does
not really
believe
, slim does
not a
ctual
ly fix probl
ems, outspoke
n, and jum
p on the
asse
ssment
of the
party's polici
es, a
nd
so
on.
Bi
Lifu Se
cretary poi
nted
out t
hat a quarter of the economic sit
uation is v
ery serious, t
here is
pressure
on e
nvironme
nt, se
asonal factor
s and ot
her obje
ctive reasons, but mainly subjectiv
probl
em, is the
problem of party members and ca
dres. S
ome depressed, negative sla
ck,
not responsi
ble, ... Doubl
e six, one, a
nd tw
o took the lea
d,
buil
d energy
burst,
Hong
sha
n di
strict, e
conomic
prosperity, eco-liva
ble,
civilize
d and harmonious i
sland. It
certainly
can
not be se
parated from the
whole
area 646 gra
ss-r
oots
party orga
nizations a
nd 14,146 mem
bers of
broad
partici
pation and support.
Through the
nd
education, so that every
cell
of the party
health,
every organi
zation is strong, so that all mem
bers of the vanguard and exemplary role, all the fighting bastion
role of grass
-roots party
organizati
ons i
nto full
play so that we
can
cross the Rapids,
overcome all difficulties a
nd t
he smooth real
izatio
n of the
hirteen- Five
cond,
basi
c learning, focus
on l
earni
ng educati
on must understa
nd the learning conte
nt and learni
ng styles

ords
are importa
nt information inside i
s very large, ca
pture
profound
work trut
h in life. For exam
ple, I
often say that the g
ood Car
penter
NAO Carpe
nter, w
hy do
some carpe
nters made fur
niture to
have every
body like
s it, Car
penter we
are not
willing to l
ook for
him? are apparently two
people
high and low technology, dig int
o the
deep i
s firmer when
bot
h of hi
s apprentices are n
ot solid, t
here is
no good that way. Luba
n art of story primary
school
are learn
had, first after six mark test practi
ce conduct, and pra
ctice
cultivation, a
nd pra
ctice
persevera
nce
, and practi
ce pati
ence, the
n with
seven
days seve
n nig
ht mill axe theory arme
d, and unity acti
on, seriously lear
ning
XI Ge
neral Secretary
on reform development sta
ble, a
nd Interior di
plomati
c defense, a
nd rul
e party ruli
ng army of important t
hought, seri
ously learning to
XI comrade for Ge
neral Se
cretary of Ce
ntral ruling a
cting
political new
conce
pt ne
w thought new strategy, seriously lear
ning
XI Ge
neral Secretary
study i
n Inner M
ongoli
a importa
nt spe
ech
spirit,
Gui
de party member
s and a dee
p under
standi
ng of a seri
es of important spee
che
rich connotation and core idea
s, w
hich began
so thoroughly Marxist
positions
返回字符串中某个指定的子串出现的开始位置。

CHARINDEX (<
’
substring_expression
’
>
，
)
其中
substring
_expression
是所要查找的字符表达式，
expression
可为字符
串也可为列名表达式。如果没有发现子串，则返回
0
值。

此函数不能用于
TEXT
和
IMAGE
数据类型。


2
、
PATINDEX()
返回字符串中某个指定的子串出现的开始位置。

PATINDEX (<
’
%substring _expression%
’
>
，
)
其中子串表达
式前后必须有百分号“
%
”否则返回值为
0
。

与
CHARINDEX
函数不同的是，
PATINDEX
函数 的子串中可以使用通配符，且此函
数可用于
CHAR
、
VARCHAR
和
TEXT
数据类型。


五、字符串操作函数

1
、
QUOTENAME()
返回被特定字符括起来的字符串。

QUOTENAME
(<
’
character_expression< br>’
>[
，
quote_
character])
其中
quote_
character
标明括字符串所用的字符，缺省值为“
[]
”。


2
、
REPLICATE()
返回一个重复
character_expression
指定次数的字符串。

REPLICATE
(character_expression
integer_expression)
如
果
integer_expression
值为负值，则返回
NULL
。


3
、
REVERSE()
将指定的字符串的字符排列顺序颠倒。

REVERSE ()
其中
character_expression
可以是字符
串、常数或一个列的值。


4
、
REPLACE()
返回被替换了指定子串的字符串。

REPLACE
(
，


，

)
用
string_expression3
替换在
string_expression1
中的子串
string_expression2
。


5
、
SPACE()
返回一个有指定长度的空白字符串。

SPACE ()
如果
integer_expression
值为负值，则返回
NULL
。


6
、
STUFF()
用另一子串替换字符串指定位置、长度的子串。

STUFF
(
，

position>
，


，
)
o sum up, i
s divi
ded i
nto 9 main
parts: 1. with regard to
persisti
ng and devel
opi
ng sociali
sm with Chine
se characteri
stics.
18 si
nce t
he XIOn more tha
n one occasi
on, General Secretary of the
histori
cal origi
n and devel
opme
nt process of sociali
sm with Chine
se characteristi
cs, t
he roa
d of socialism
with Chi
nese characteristi
cs, System Info, sy
stem, uphol
d and devel
op t
he understa
ndi
ng of socialism wit
h Chine
se characteristi
cs is
determine
d to have
bee
n profoundly expounde
d, further stre
ngthe
ned t
he party a
nd the pe
ople a
dher
e to and devel
op t
he confide
nce
and
determinati
on
of the socialism with
Chi
nese
chara
cteristics.
XI Ge
neral Secretary's
spee
ch i
n this regar
d include the
people's year
ning for a better life, that is our g
oal, cl
ose
ly focus on t
he dev
elopment of sociali
sm with Chine
se characteristi
cs st
udy a
nd publi
cize t
he spirit of party 18, t
he unwaveringly a
dhere t
o the developme
nt of socialism wit
h Chi
nese characteristi
cs, the
persi
stence and good use of Ma
o Ze-Dong's t
hought of soul.
2. with regard t
o the Chinese
dream of realizi
ng the great rejuvenati
on
of the Chine
se nati
on.
18 cl
osi
ng soon, t
he ne
w Ce
ntral coll
ective lea
dership w
he
n they visite
d the ex
hibiti
on of the roa
d to recovery,
XI,
General Se
cretary of the
solem
n de
claration
ejuve
nation of the
Chi
nese
nati
on, the greatest dream
of the Chine
se nati
on i
n moder
n times.
hou, on more t
han
one
occasi
on, General Se
cretary expounde
d the scie
ntific connotation of Chine
se dream, rea
lize the
Chi
nese dream must take the road, carry forwar
d the spirit and cohe
sion of Chine
se force
s, gradually formed
the Chi
na dr
eam, a strategic thoug
ht. And practi
ce wit
h the
Chi
nese
dream, reflects t
he hi
story of the
new sessi
on
of the CPC Central Committee, and conforms to the devel
opme
nt trend a
nd t
he people hope,
embodies t
he greatest common
divisor and the
conse
nsus of Chine
se pe
opl
e at home a
nd abr
oad, inspiring all
pe
ople
s forging ahead i
n unity, the spirit
of unswervingly foll
ow the road
of socialism wit
h
Chinese
chara
cteristics flags and hig
h melody.
This a
spe
cts
XI Ge
neral Secretary
of spe
ech main i
ncl
udi
ng achieved
Chi
nese great revival i
s Chine
se modern yilai m
ost great of dream i
n 12t
h session nati
onal
people's
Congress first times
Conference Sha
ng of speech work t
o dream int
o really in
chieve
d China
dream of vivid
practice in t
he flying youth dr
eam achieved
Chi
na dream
not only benefit pe
opl
e, and benefit worl
d pe
opl
e innovation due its S
hi, dre
am suita
ble have it
s potential a
chieve
d Chine
se great revival is
bot
h at home a
nd
abroa
d Chinese
chil
dren
common of dream,.
3. on deepeni
ng reform. 18 si
nce t
he
XI Ge
neral Secr
etary for the first time to Study on t
he choi
ce
of the Guangdong, unequivocally express the
unswervingly foll
ow t
he roa
d of reform and openi
ng up power determi
nation and courage. Party's 18 sessi
on a
dopted a
decision to
deepen reform,
ope
ned
a new journey for dee
pening the reform in our countr
y. Central ha
s hel
d 22 time
s full de
epe
ning reform le
d Group
Confere
nce,
considered thr
oug
h more tha
n 100 mor
e items important reform pr
ogramme, devel
ope
d introduced mor
e than 800 over