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S:select abs(-1) value
O:select abs(-1) value from dual
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S:select ceiling(-1.001) value
O:select ceil(-1.001) value from dual
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S:select floor(-1.001) value
O:select floor(-1.001) value from dual
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S:select cast(-1.002 as int) value
O:select trunc(-1.002) value from dual
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S:select round(1.23456,4) value 1.23460
O:select round(1.23456,4) value from dual 1.2346
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S:select Exp(1) value 2.7182818284590451
O:select Exp(1) value from dual 2.71828182
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S:select log(2.7182818284590451) value 1
O:select ln(2.7182818284590451) value from dual; 1
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S:select log10(10) value 1
O:select log(10,10) value from dual; 1
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S:select SQUARE(4) value 16
O:select power(4,2) value from dual 16
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S:select SQRT(4) value 2
O:select SQRT(4) value from dual 2
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S:select power(3,4) value 81
O:select power(3,4) value from dual 81
12.È¡Ëæ»úÊý
S:select rand() value
O:select sys.dbms_random.value(0,1) value from dual;
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S:select sign(-8) value -1
O:select sign(-8) value from dual -1
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S:SELECT PI() value 3.1415926535897931
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S:select max(value) value from
(select 1 value
union
select -2 value
union
select 4 value
union
select 3 value)a
O:select greatest(1,-2,4,3) value from dual
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S:select min(value) value from
(select 1 value
union
select -2 value
union
select 4 value
union
select 3 value)a
O:select least(1,-2,4,3) value from dual
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S:select F1,IsNull(F2,10) value from Tbl
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LENGTH calculates length using characters as defined by the input character set.
LENGTHB uses bytes instead of characters.
VSIZE returns the number of bytes in the internal representation of expr.
LENGTHC uses Unicode complete characters.
LENGTH2 uses UCS2 codepoints.
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Óï·¨ : next_day( date, weekday )
date is used to find the next weekday.
weekday is a day of the week (ie: SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY)
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Oracle 9i, Oracle 10g, Oracle 11g
For example:
next_day('01- ......
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select * from opendatasource('MSDAORA', 'Data Source=XST4;User ID=manager;Password=sjpsjsjs')..MISD.PBCATCOL
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