149.ATAN2()
返回用弧度表示的角度的X和Y坐標(biāo)的反正切值.
SELECTATAN2(0.5,0.9)FROMBSEMPMS;
150.BIGINT()
返回整型常量中的數(shù)字或字符串的64位整數(shù)表示.
SELECTBIGINT(EMP_NO)FROMBSEMPMS;
151.CEILING()ORCEIL()
返回比參數(shù)大或等于參數(shù)的最小的整數(shù)值.
SELECTCEILING(3.56)FROMBSEMPMS;
SELECTCEIL(4.67)FROMBSEMPMS;
152.CHAR()
返回日期時(shí)間型,字符串,整數(shù),十進(jìn)制或雙精度浮點(diǎn)數(shù)的字符串表示.
SELECTCHAR(SALARY,',')FROMBSEMPMS;
153.CHR()
返回具有由參數(shù)指定的ASCII碼的字符.
SELECTCHAR(167)FROMBSEMPMS;
154.CONCAT()
返回兩個(gè)字符串的連接.
SELECTCONCAT(EMP_NO,EMP_NAM)FROMBSEMPMS;
155.YEAR()
返回?cái)?shù)值的年部分.
SELECTYEAR('2003/01/02')FROMBSEMPMS;
156.VARCHAR()
返回字符串,日期型,圖形串的可變長(zhǎng)度的字符串表示.
SELECTVARCHAR(EMP_NAM,50)FROMBSEMPMS;
157.UCASE()ORUPPER()
返回字符串的大寫(xiě).
SELECTUCASE(EMP_NAM)FROMBSEMPMS;
SELECTUPPER(EMP_NO)FROMBSEMPMS;
158.TRUNCATE()ORTRUNC()
從表達(dá)式小數(shù)點(diǎn)右邊的位置開(kāi)始截?cái)嗖⒎祷卦摂?shù)值.
SELECTTRUNCATE(345.6789,2)FROMBSEMPMS;
159.TIME()
返回一個(gè)數(shù)值中的時(shí)間.
SELECTTIME('2001-03-19.12.30.123456')FROMBSEMPMS;
160.SUBSTR(EXP1,EXP2)
返回EXP1串自EXP2處開(kāi)始的子串.
SELECTSUBSTR('CDNJFDJFJD',5)FROMBSEMPMS;
SELECTSUBSTR('CDNJFDJFJD',5,2)FROMBSEMPMS;
161.SQRT()
返回該參數(shù)的平方根.
SELECTSQRT(36)FROMBSEMPMS;
162.SPACE()
返回由參數(shù)指定的長(zhǎng)度,包含空格在內(nèi)的字符串.
SELECTSPACE(10)FROMBSEMPMS;
163.SECOND()
返回一個(gè)數(shù)值的秒部分.
SELECTSECOND('18:34:32')FROMBSEMPMS;
164.RTRIM()
刪除字符串尾部的空格.
SELECTRTRIM('COMMENT')FROMBSEMPMS;
165.ROUND(EXP1,EXP2)
返回EXP1小數(shù)點(diǎn)右邊的第EXP2位置處開(kāi)始的四舍五入值.
SELECTROUND(2345.6789,2)FROMBSEMPMS;
166.REPLACE(EXP1,EXP2,EXP3)
用EXP3替代EXP1中所有的EXP2
SELECTCHAR(REPLACE('ROMANDD','NDD','CCB'),10)FROMBSEMPMS;
167.REPEAT(EXP1,EXP2)
返回EXP1重復(fù)EXP2次后的字符串.
SELECTCHAR(REPEAT('REPEAT',3),21)FROMBSEMPMS;
168.REAL()
返回一個(gè)數(shù)值的單精度浮點(diǎn)數(shù)表示.
SELECTREAL(10)FROMBSEMPMS;
169.RAND()
返回0和1之間的隨機(jī)浮點(diǎn)數(shù).
SELECTRAND()FROMBSEMPMS;
170.POWER(EXP1,EXP2)
返回EXP1的EXP2次冪.
SELECTPOWER(2,5)FROMBSEMPMS;
171.POSSTR(EXP1,EXP2)
返回EXP2在EXP1中的位置.
SELECT('ABCDEFGH','D')FROMBSEMPMS;
172.NULLIF(EXP1,EXP2)
如果EXP1=EXP2,則為NULL,否則為EXP1
173.NODENUMBER()
返回行的分區(qū)號(hào).
SELECTNODENUMBER(EMP_NO)FROMBSEMPMS;
174.MONTH()
返回一個(gè)數(shù)值的月部分.
SELECTMONTH('2003/10/20')FROMBSEMPMS;
175.MOD(EXP1,EXP2)
返回EXP1除以EXP2的余數(shù).
SELECTMOD(20,8)FROMBSEMPMS;
176.MINUTE()
返回一個(gè)數(shù)值的分鐘部分.
SELECTMINUTE('18:34:23')FROMBSEMPMS;
177.LTRIM()
刪除字符串前面的空格.
SELECTLTRIM('CDDD')FROMBSEMPMS;
178.HOUR()
返回一個(gè)數(shù)值的小時(shí)部分.
SELECTHOUR('18:34:23')FROMBSEMPMS;
179.DOUBLE()
如果參數(shù)是一個(gè)數(shù)字表達(dá)式,返回與其相對(duì)應(yīng)的浮點(diǎn)數(shù),如果參數(shù)是字符串表達(dá)式,則返回該數(shù)的字符串表達(dá)式.
SELECTDOUBLE('5678')FROMBSEMPMS;
180.EXP()
返回參數(shù)的指數(shù)函數(shù).
SELECTEXP(2)FROMBSEMPMS;
181.FLOAT()
返回一個(gè)數(shù)的浮點(diǎn)表示.
SELECTFLOAT(789)FROMBSEMPMS;
182.FLOOR()
返回小于或等于參數(shù)的最大整數(shù).
SELECTFLOOR(88.93)FROMBSEMPMS;
183.HEX()
返回一個(gè)表示為字符串的值的16進(jìn)制表示.
SELECTHEX(16)FROMBSEMPMS;
