Oracle PL/SQL – FLOOR function example TheFLOOR()function round the specified number down, and return the largest number that is less than or equal to the specified number. FLOOR function examples SELECTFLOOR(1.2)FROMDUAL;-- output : 1SELECTFLOOR(1.5)FROMDUAL;-- output : 1SELECTFLOOR(1.7)...
Purpose of the Oracle TO_TIMESTAMP Function The purpose of the Oracle TO_TIMESTAMP function is toconvert a string into a timestamp. It’s the “string to timestamp” function in Oracle SQL. Now, a TIMESTAMP value is a type of date. It includes: the date, the time, and a series of...
Example The LISTAGG function can be used in Oracle/PLSQL. Since this is a more complicated function to understand, let's look at an example that includes data to demonstrate what the function outputs. If you had a products table with the following data: ...
This Oracle tutorial explains how to create and drop functions in Oracle/PLSQL with syntax and examples.Create Function Just as you can in other languages, you can create your own functions in Oracle. Syntax The syntax to create a function in Oracle is: CREATE [OR REPLACE] FUNCTION function...
Oracle PL/SQL – ACOS function example TheACOS()function returns the arc cosine of input n, the input n must be in the range of -1 to 1. The function will return a value in the range of 0 topi, expressed in radians. ACOS function examples...
The following example returns the product id, product name, list price, and the name of the product with the lowest price: SELECTproduct_id, product_name, list_price,FIRST_VALUE(product_name)OVER(ORDERBYlist_price) first_productFROMproductsWHEREcategory_id =1;Code language:SQL (Structured Query...
工作中用到一段比较复杂的SQL查询脚本,使用了listagg()函数实现了具有多个值的字段的填充(即,列表聚合,list aggregation(我猜的))。 说简单点,listagg()函数可以实现多列记录聚合为一条记录,从而实现数据的压缩、致密化(data densification)。 以下内容转载自http://dacoolbaby.iteye.com/blog/1698957,SQL脚本做了...
数据类型是 TIMESTAMP WITH TIME ZONE. Example: A:default timestamp SQL> selectCURRENT_TIMESTAMPfrom dual; CURRENT_TIMESTAMP --- 09-NOV-05 04.27.41.416811 PM +08:00 B: use precision SQL> ALTER SESSION SET TIME_ZONE ='-5:0'; Session altered. SQL...
Can I Use Oracle SUBSTR with a LONG? No, unfortunately, youcan’t perform this function on a LONG. According to Oracle, from version 8.0 you should be using the CLOB data type instead. The only way that I know of to get a SUBSTR from a LONG variable is towrite a PL/SQL procedure...
EXISTS is a type of condition in Oracle database which can be defined as a condition or operator that is used with a sub query ( inner query or nested query is a query within another SQL query ) and upon execution of the sub query, if the sub query returns at least one row then th...