2. 在Oracle 10g及以前版本,一般是通过各种SQL进行行列转换,列入下面例子: createorreplaceprocedureP_row_to_col(tabnameinvarchar2, group_colinvarchar2, column_colinvarchar2, value_colinvarchar2, Aggregate_funcinvarchar2default'max', colorderinvarchar2defaultnull, roworderinvarchar2defaultnull, when_value...
end row_to_col; 这里修改了传入参数名,使其更容易理解。继续使用了创建视图这个方法,当然也可以改成用游标传出。参数:tabname 需要进行行转列操作的表名;group_col 查询结果要按某列或某些列分组的字段名;column_col 要从行转成列的字段;value_col 需要聚合的值字段;Aggregate_func 选用的聚合函数,可选,默认...
第一:列转行(对某列拆分,一列拆多行)lateral view explode(split(column, ',')) num数据 2122 9,12 2123 12,15 2124 12,15 2125 1,12,15 建表 create table if not exists t_row_to_column_tmp( id string, tag string ) row form
selectid,max(decode(rn,1,name,null))||max(decode(rn,2,','||name,null))||max(decode(rn,3,','||name,null))strfrom(selectid,name,row_number()over(partitionbyidorderbyname)asrnfromtest)tgroupbyidorderby1; ---适用范围:8i,9i,10g及以后版本(ROW_NUMBER+LEAD) selectid,strfrom(selectid...
CREATE TABLE T_ROW_COL_LHR( NUM VARCHAR2(15 CHAR), NAME VARCHAR2(20 CHAR), SEX VARCHAR2(2 CHAR), CLASSES VARCHAR2(30 CHAR), COURSE_NAME VARCHAR2(50 CHAR) ); INSERT INTO T_ROW_COL_LHR(NUM,NAME,SEX,CLASSES,COURSE_NAME) VALUES ('206211','王艺','男','06-1班','保险学'); IN...
Purpose For a specified measure, LISTAGG orders data within each group specified in the ORDER BY clause and then concatenates the values of the measure column. ■ As a single-set aggregate function, LISTAGG operates on all rows and returns a single output row. ■ As a group-set aggregate, ...
the subquery produces asingle XML string column. The XML string for each row holds aggregated datacorresponding to the implicitGROUPBYvalue of that row. TheXML string for each output row includes all pivot values found by the subquery,even if there are no corresponding rows in the input data....
Oracle SQL - pivoting one row of several columns into one column of several rows Oracle Tips by Burleson Consulting There are many ways to use Oracle to pivot column data for display on a single row: 0 - Download SQL into Excel spreadsheet pivot table ...
For a specified measure, LISTAGG orders data within each group specified in the ORDER BY clause and then concatenates the values of the measure column. As a single-set aggregate function, LISTAGG operates on all rows and returns a single output row. ...
ROW_NUMBER() OVER (PARTITION BY type ORDER BY qty): 为每个 type 分区内的数据根据 qty 列的排序结果生成递增的序号。例如,对于 type 值为1 的行,按 qty 排序后,如果 qty 有6、7、9 三个值,则编号依次为 1、2、3。 COUNT(*) OVER (PARTITION BY type): 统计每个 type 分区内的行数。输出结果...