SQL Fundamentals: Using Single-Row Functions to Customize Output使用单行函数自定义输出 SQL Fundamentals || Single-Row Functions || 字符函数 character functions SQL Fundamentals || Single-Row Functions || 数字函数number functions SQL Fundamentals || Single-Row Functions || 日期函数date functions SQL F...
SQL Fundamentals || Single-Row Functions || 通用函数 General function 数字函数number functions Number functions- Accepts numeric input and returns numeric values. Functions under the category are ROUND, TRUNC, and MOD. ROUND and TRUNC functions are used to round and truncate the number value. MOD...
Single-row functions return a single result row for every row of a queried table or view. These functions can appear in select lists, WHERE clauses, START WITH and CONNECT BY clauses, and HAVING clauses. Numeric Functions Numeric functions accept numeric input and return numeric values. Mo...
Single-row functions return a single result row for every row of a queried stream or view.For more information, see Section 1.1.9, "Functions".5.1 Introduction to Oracle CQL Built-In Single-Row Functions Table 5-1 lists the built-in single-row functions that Oracle CQL provides. Table 5-...
_wait / 60, 2) AS MINUTOS_ESPERA, a.event, c.object_name, b.sql_id, d.instance_name AS SERVER FROM gv$session_wait a, gv$session b, dba_objects c, gv$instance d WHERE a.event NOT IN ('Streams AQ: waiting for messages in the queue', 'smon timer', 'pmon timer', 'rdbms ...
The binlog of the DR database must be enabled and use the row-based format. GTID must be enabled for the DR database. The DR DB instance cannot contain any service databases except the system database. Precautions The parameter modification of the service database is not recorded in logs ...
A function is a built-in PL/SQL program that always returns a single value. Aggregate Functions operate on a group of rows at one time and return a single row. Object reference functions manipulate the value in columns with the REF datatype in object tables. Single-row functions add a ...
(六).其它辅助函数(Miscellaneous Single-Row Functions) 例如:select decode('a2','a1','true1','a2','true2','default') from du…www.jb51.net|基于128个网页 2. 其他辅助函数 (六).其他辅助函数(Miscellaneous Single-Row Functions) 1、DECODE(exp,s1,r1,s2,r2..s,r[,def]) 可以把它理解成一...
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A function is a built-in PL/SQL program that always returns a single value. Aggregate Functions operate on a group of rows at one time and return a single row. Object reference functions manipulate the value in columns with the REF datatype in object tables. Single-row functions add a ...