SQL 문구 모음
24837 단어 ql 문장
--
--
SELECT --
INSERT --
DELETE --
UPDATE --
--
CREATE TABLE --
DROP TABLE --
ALTER TABLE --
CREATE VIEW --
DROP VIEW --
CREATE INDEX --
DROP INDEX --
CREATE PROCEDURE --
DROP PROCEDURE --
CREATE TRIGGER --
DROP TRIGGER --
CREATE SCHEMA --
DROP SCHEMA --
CREATE DOMAIN --
ALTER DOMAIN --
DROP DOMAIN --
--
GRANT --
DENY --
REVOKE --
--
COMMIT --
ROLLBACK --
SET TRANSACTION --
-- SQL
DECLARE --
EXPLAN --
OPEN --
FETCH --
CLOSE --
PREPARE -- SQL
EXECUTE -- SQL
DESCRIBE --
---
declare @id char(10)
--set @id = '10010001'
select @id = '10010001'
---
--- @@
--IF ELSE
declare @x int @y int @z int
select @x = 1 @y = 2 @z=3
if @x > @y
print 'x > y' -- 'x > y'
else if @y > @z
print 'y > z'
else print 'z > y'
--CASE
use pangu
update employee
set e_wage =
case
when job_level = ’1’ then e_wage*1.08
when job_level = ’2’ then e_wage*1.07
when job_level = ’3’ then e_wage*1.06
else e_wage*1.05
end
--WHILE CONTINUE BREAK
declare @x int @y int @c int
select @x = 1 @y=1
while @x < 3
begin
print @x -- x
while @y < 3
begin
select @c = 100*@x + @y
print @c -- c
select @y = @y + 1
end
select @x = @x + 1
select @y = 1
end
--WAITFOR
-- 1 2 3 SELECT
waitfor delay ’01:02:03’
select * from employee
-- 11 8 SELECT
waitfor time ’23:08:00’
select * from employee
***SELECT***
select *( ) from table_name( ) where column_name operator value
ex:( )
select * from stock_information where stockid = str(nid)
stockname = 'str_name'
stockname like '% find this %'
stockname like '[a-zA-Z]%' --------- ([] )
stockname like '[^F-M]%' --------- (^ )
--------- like where )
or stockpath = 'stock_path'
or stocknumber < 1000
and stockindex = 24
not stock*** = 'man'
stocknumber between 20 and 100
stocknumber in(10,20,30)
order by stockid desc(asc) --------- ，desc- ，asc-
order by 1,2 --------- by
stockname = (select stockname from stock_information where stockid = 4)
---------
--------- select ，
--------- where in
select distinct column_name form table_name --------- distinct ，
select stocknumber ,"stocknumber + 10" = stocknumber + 10 from table_name
select stockname , "stocknumber" = count(*) from table_name group by stockname
--------- group by ,
having count(*) = 2 --------- having
select *
from table1, table2
where table1.id *= table2.id -------- ，table1 table2 null
table1.id =* table2.id --------
select stockname from table1
union [all] ----- union ，all-
select stockname from table2
***insert***
insert into table_name (Stock_name,Stock_number) value ("xxx","xxxx")
value (select Stockname , Stocknumber from Stock_table2)---value select
***update***
update table_name set Stockname = "xxx" [where Stockid = 3]
Stockname = default
Stockname = null
Stocknumber = Stockname + 4
***delete***
delete from table_name where Stockid = 3
truncate table_name ----------- ，
drop table table_name ---------------
***alter table*** ---
alter table database.owner.table_name add column_name char(2) null .....
sp_help table_name ----
create table table_name (name char(20), age smallint, lname varchar(30))
insert into table_name select ......... ----- （ ）
alter table table_name drop constraint Stockname_default ---- Stockname default
***function(/* */)***
---- ----
AVG --
COUNT --
MAX --
MIN --
SUM --
--AVG
use pangu
select avg(e_wage) as dept_avgWage
from employee
group by dept_id
--MAX
--
use pangu
select e_name
from employee
where e_wage =
(select max(e_wage)
from employee)
--STDEV()
--STDEV()
--STDEVP()
--STDEVP()
--VAR()
--VAR()
--VARP()
--VARP()
---- ----
/*** ***/
SIN(float_expression) --
COS(float_expression) --
TAN(float_expression) --
COT(float_expression) --
/*** ***/
ASIN(float_expression) -- FLOAT
ACOS(float_expression) -- FLOAT
ATAN(float_expression) -- FLOAT
ATAN2(float_expression1,float_expression2)
-- float_expression1 /float_expres-sion2
DEGREES(numeric_expression)
--
--INTEGER/MONEY/REAL/FLOAT
RADIANS(numeric_expression) --
--INTEGER/MONEY/REAL/FLOAT
EXP(float_expression) --
LOG(float_expression) --
LOG10(float_expression)-- 10
SQRT(float_expression) --
/*** ***/
CEILING(numeric_expression) -- >=
--INTEGER/MONEY/REAL/FLOAT
FLOOR(numeric_expression) -- <=
--INTEGER/MONEY/REAL/FLOAT
ROUND(numeric_expression) -- integer_expression
-- INTEGER/MONEY/REAL/FLOAT
ABS(numeric_expression) --
--INTEGER/MONEY/REAL/FLOAT
SIGN(numeric_expression) -- 0 1 -1
-- INTEGER/MONEY/REAL/FLOAT
PI() -- π 3.1415926535897936
RAND([integer_expression]) -- [integer_expression] 0-1
---- ----
ASCII() -- ASCII
CHAR() -- ASCII
-- 0 ~ 255 ASCII CHAR NULL
LOWER() --
UPPER() --
STR() --
LTRIM() --
RTRIM() --
LEFT(),RIGHT(),SUBSTRING() --
CHARINDEX(),PATINDEX() --
SOUNDEX() --
--SOUNDEX SOUNDEX 0
DIFFERENCE() -- SOUNDEX
--0 SOUNDEX
--1 SOUNDEX
--2 SOUNDEX
--3 SOUNDEX
--4 SOUNDEX
QUOTENAME() --
/*select quotename('abc', '{') quotename('abc')
----------------------------------{
{abc} [abc]*/
REPLICATE() -- character_expression
/*select replicate('abc', 3) replicate( 'abc', -2)
----------- -----------
abcabcabc NULL*/
REVERSE() --
REPLACE() --
/*select replace('abc123g', '123', 'def')
----------- -----------
abcdefg*/
SPACE() --
STUFF() --
---- ----
CAST()
CAST() (<expression> AS <data_ type>[ length ])
CONVERT()
CONVERT() (<data_ type>[ length ], <expression> [, style])
select cast(100+99 as char) convert(varchar(12), getdate())
------------------------------ ------------
199 Jan 15 2000
---- ----
DAY() -- date_expression
MONTH() -- date_expression
YEAR() -- date_expression
DATEADD(<datepart> ,<number> ,<date>)
-- date number
DATEDIFF(<datepart> ,<number> ,<date>)
-- datepart
DATENAME(<datepart> , <date>) --
DATEPART(<datepart> , <date>) --
GETDATE() -- DATETIME
---- ----
APP_NAME() --
COALESCE() -- NULL
COL_LENGTH(<'table_name'>, <'column_name'>) --
COL_NAME(<table_id>, <column_id>) --
DATALENGTH() --
DB_ID(['database_name']) --
DB_NAME(database_id) --
HOST_ID() --
HOST_NAME() --
IDENTITY(<data_type>[, seed increment]) [AS column_name])
--IDENTITY() SELECT INTO identity column
/*select identity(int, 1, 1) as column_name
into newtable
from oldtable*/
ISDATE() --
ISNULL(<check_expression>, <replacement_value>) -- NULL
ISNUMERIC() --
NEWID() -- UNIQUEIDENTIFIER
NULLIF(<expression1>, <expression2>)
--NULLIF expression1 expression2 NULL expression1
SQL
： ( , ：a ：b)
SQL: select * into b from a where 1<>1
： ( , ：a ：b)
SQL: insert into b(a, b, c) select d,e,f from b;
： 、
SQL: select a.title,a.username,b.adddate from table a,(select max(adddate) adddate from table where table.title=a.title) b
： ( 1：a 2：b)
SQL: select a.a, a.b, a.c, b.c, b.d, b.f from a LEFT OUT JOIN b ON a.a = b.c
：
SQL: select * from where datediff('minute',f ,getdate())>5
： ，
SQL:
delete from info where not exists ( select * from infobz where info.infid=infobz.infid )
：--
SQL:
SELECT A.NUM, A.NAME, B.UPD_DATE, B.PREV_UPD_DATE
FROM TABLE1,
(SELECT X.NUM, X.UPD_DATE, Y.UPD_DATE PREV_UPD_DATE
FROM (SELECT NUM, UPD_DATE, INBOUND_QTY, STOCK_ONHAND
FROM TABLE2
WHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(SYSDATE, 'YYYY/MM')) X,
(SELECT NUM, UPD_DATE, STOCK_ONHAND
FROM TABLE2
WHERE TO_CHAR(UPD_DATE,'YYYY/MM') =
TO_CHAR(TO_DATE(TO_CHAR(SYSDATE, 'YYYY/MM') || '/01','YYYY/MM/DD') - 1, 'YYYY/MM') ) Y,
WHERE X.NUM = Y.NUM （+）
AND X.INBOUND_QTY + NVL(Y.STOCK_ONHAND,0) <> X.STOCK_ONHAND ) B
WHERE A.NUM = B.NUM
：--
SQL:
select * from studentinfo where not exists(select * from student where studentinfo.id=student.id) and ='"&strdepartmentname&"' and ='"&strprofessionname&"' order by , ,
：
( ）
SQL:
SELECT a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy') AS telyear,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '01', a.factration)) AS JAN,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '02', a.factration)) AS FRI,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '03', a.factration)) AS MAR,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '04', a.factration)) AS APR,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '05', a.factration)) AS MAY,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '06', a.factration)) AS JUE,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '07', a.factration)) AS JUL,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '08', a.factration)) AS AGU,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '09', a.factration)) AS SEP,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '10', a.factration)) AS OCT,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '11', a.factration)) AS NOV,
SUM(decode(TO_CHAR(a.telfeedate, 'mm'), '12', a.factration)) AS DEC
FROM (SELECT a.userper, a.tel, a.standfee, b.telfeedate, b.factration
FROM TELFEESTAND a, TELFEE b
WHERE a.tel = b.telfax) a
GROUP BY a.userper, a.tel, a.standfee, TO_CHAR(a.telfeedate, 'yyyy')
： ：
SQL: select * from a left inner join b on a.a=b.b right inner join c on a.a=c.c inner join d on a.a=d.d where .....
： ID
SQL:
SELECT (CASE WHEN EXISTS(SELECT * FROM Handle b WHERE b.HandleID = 1) THEN MIN(HandleID) + 1 ELSE 1 END) as HandleID
FROM Handle
WHERE NOT HandleID IN (SELECT a.HandleID - 1 FROM Handle a)
: ms sql ,
: 。
: , 。
: database oracle ，
select distinct * into #table_name from table_name
delete from table_name
select * into table_name from #table_name
drop table #table_name
“select into” ，
， ， Query Analyzer
execute sp_dboption 'db_name','select into','true'
。 。이 내용에 흥미가 있습니까?
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