Introduction to the Oracle LAST_VALUE() function The LAST_VALUE() is an analytic function that allows you to obtain the last value in an ordered set of values. The following shows the syntax of the Oracle LAST_VALUE() function: LAST_VALUE (expression) [ {RESPECT | IGNORE} NULLS ]) OVER...
SELECT DISTINCT LAST_VALUE(salary) OVER (ORDER BY salary ASC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS "HIGHEST" FROM employees; These are the results that you should see: HIGHEST --- 5000 In this example, the LAST_VALUE returns the highest salary value as specified byLAST...
NULLS FIRST | NULLS LAST Specify whether returned rows containing nulls should appear first or last in the ordering sequence. nulls first | nulls last 指定若返回行包含空值,该值应该出现在排序序列的开始还是末尾。 NULLS LAST is the default for ascending order, and NULLS FIRST is the default for...
NULLS FIRST | NULLS LAST Specify whether returned rows containing nulls should appear first or last in the ordering sequence. nulls first | nulls last 指定若返回行包含空值,该值应该出现在排序序列的开始还是末尾。 NULLS LAST is the default for ascending order, and NULLS FIRST is the default for...
BIND_VARIABLE_RAW(c, name, value [, out_value_size ]) Bind a RAW value to a variable CLOSE_CURSOR(c IN OUT) Close a cursor COLUMN_VALUE(c, position, value OUT [, column_error OUT [, actual_length OUT ]]) Return a column value into a variable. COLUMN_VALUE_CHAR(c, position, ...
您可以使用case表达式作为参数，并使用ignore nulls分析函数的加法来跳过作为块的延续的值：
FIRST,LAST NTILE FIRST_VALUE/LAST_VALUE LISTAGG RATIO_TO_REPORT arguments个数:0~3 arguments类型:数字类型或可以隐式转为为数字类型的非数字类型 analytic_clause 在FROM,WHERE,GROUP BY和HAVING子句之后进行计算 在SELECT和ORDER BY子句指定带analytic_clause的分析函数 query_partition_clause 根据expr对查询结果进...
nth_value(a1.ed_ucc_dt, 1) from last ignore nulls over ( partition by a1.pat_id order by a1.visit_date_dt rows between unbounded preceding and 1 preceding ), null ) prev_ed_ucc_dt, nvl( nth_value(a1.ed_ucc_dt, 1) ignore nulls over ( partition by a1.pat_id order by a1...
Oracle FIRST_VALUE() function examples We’ll use theproductstable from thesample databaseto demonstrate theFIRST_VALUE()function: The following example returns the product id, product name, list price, and the name of the product with the lowest price: ...
Let's look at some Oracle NTH_VALUE function examples and explore how to use the NTH_VALUE function in Oracle/PLSQL. Second Highest Value by Dept_id In this NTH_VALUE example, we have a table called employees with the following data: EMPLOYEE_ID LAST_NAME FIRST_NAME SALARY DEPT_ID --...