This Oracle tutorial explains how to use the Oracle/PLSQL GREATEST function with syntax and examples.Description The Oracle/PLSQL GREATEST function returns the greatest value in a list of expressions.Syntax The
碰巧看到一篇文章提到了Oracle的greatest函数,相对应的有个least,以为这俩是个新的函数,但是看了下官方文档,其实在11g的《SQL Language Reference》,就提到了他们,是我孤陋寡闻了。 从函数的名称上,能猜到这两个函数分别求的是最大值和最小值。 greatest函数介绍, GREATEST returns the greatest of a list of...
GREATEST returns the greatest of a list of one or more expressions. Oracle Database uses the first expr to determine the return type. If the first expr is numeric, then Oracle determines the argument with the highest numeric precedence, implicitly converts the remaining arguments to that data t...
Oracle Databaseは、最初のexprを使用して戻り型を判断します。最初のexprが数値である場合、Oracleは、数値の優先順位が最も高い引数を判断し、比較の前に残りの引数をそのデータ型に暗黙的に変換して、そのデータ型を戻します。最初のexprが数値ではない場合、比較の前に、2番目以降の各exprが最...
The SQL GREATEST function returns the“greatest” or largest value in a set of valuesthat you provide to it. The SQL LEAST function returns the“least” or smallest value in a set of valuesthat you provide to it, and it’s the opposite of the GREATEST function. ...
GREATEST GREATEST(expr [, expr ...]) Returns the highest value from the list of arguments supplied. The GREATEST function can be used with character strings and dates, as well … - Selection from Oracle SQL: the Essential Reference [Book]
sql 数据库 database mysql 运算符 转载 mob64ca1409970a 4月前 4阅读 Oracle Greatest()函数 GREATESTThe GREATEST function returns the largest expression in a list of expressions. All expressions after the first are implicitly converted to the data type of the first expression before th Oracle...
GREATEST(‘ABC’,’BCA’,’CBA’,’BA ——— cbaa LEAST least( expr1, expr2, … expr_n ) expr1, expr2, . expr_n 可以是值也可以是函数. 函数功能: 取得值最小值 SQL> SELECT least(10,21,3,15,18) FROM dual; LEAST(10,21,3,...
(2,1): 2 GREATEST('2',1,0): 2 GREATEST('a','b','c'): c GREATEST('a', NULL, 'c'): NULL GREATEST('2014-05-15','2014-06-01'): 2014-06-01 1 row in set obclient> SELECT GREATEST(2); ERROR 1582 (42000): Incorrect parameter count in the call to native function '...
2,1): 2 GREATEST('2',1,0): 2 GREATEST('a','b','c'): c GREATEST('a', NULL, 'c'): NULL GREATEST('2014-05-15','2014-06-01'): 2014-06-01 1 row in set obclient> SELECT GREATEST(2); ERROR 1582 (42000): Incorrect parameter count in the call to native function 'greatest...