1. decode函数 Purpose DECODE compares expr to each search value one by one. If expr is equal to a search, then Oracle Database returns the corresponding result. If no match is found, then Oracle returns&nb...(more)
Ceiling
Returns a number rounded to the next
highest integer.
Syntax
ceiling (numeric_exp)
Examples
ceiling (-1.23)
Returns the result: -1
ceiling (1.23)
Returns the result: 2
Floor
Returns a number rounded to the next
lowest integer.
Synt...(more)
在数据库中,有时我们要查出某一列的数值为空的行,并用0或者另外一个字符替代,这时可以用case when column is null then 0(或者其他字符) else column end 语句,
但是,这样写的话句子很长,或者进行多表连接查询时很容易让人头晕,但是在DB2中的有没有相当于MSSQL中的ISNULL函数呢?其...(more)
CREATE OR REPLACE FUNCTION TMPGETNUMS(F_string VARCHAR(128))RETURNS VARCHAR(128)LANGUAGE SQLSPECIFIC TMPGETNUMSCONTAINS SQLRETURN WITH TMP_STR(POSITION, NUMBERS) AS (VALUES (0, CAST('' AS VARCHAR(128))) UNION...(more)