create or replace procedure p_RowsToCols(as_sql in varchar2 --源数据的查询sql ,as_sql_cols in varchar2 --动态转换列的查询sql,要求转为列的那列,字段名必须为cols,支持排序 ,as_aggCol in varchar2 --对应pivot函数的 聚合函数 ,as_changeCol in varchar2 --源数据中,要转为列的字段名 ,as_v...
'/PivotSet/item[' || to_char(v_i) || ']/column[1]') into v_existsnode from dual; end loop; v_sql := trim(',' from v_sql) || ') x'; commit; select count(1) into v_count from user_tab_columns where table_name = upper(pi_create_table); if v_count = 0 then execute...
其实原理很简单,就是通过动态sql,去把你不愿意写,或者说是不确定的转换列数,通过查询查出来,拼接进去,然后执行拼接后的sql,创建视图。 三、存储过程 create or replace procedure p_RowsToCols(as_sql in varchar2 --源数据的查询sql ,as_sql_cols in varchar2 --动态转换列的查询sql,要求转为列的那列,字...
v_i:=v_i+1;selectexistsnode(v_name_xml,'/PivotSet/item['||to_char(v_i)||']/column[1]')intov_existsnodefromdual; endloop; v_sql:=trim(','fromv_sql)||')x'; commit; selectcount(1)intov_countfromuser_tab_columnswheretable_name=upper(pi_create_table); ifv_count=0then execute...
SQL Code 1 select * from user_tab_columns Oracle 11g 行列互换 pivot 和 unpivot 说明 在Oracle 11g中,Oracle 又增加了2个查询:pivot(行转列) 和unpivot(列转行) 参考:http://blog.csdn.net/tianlesoftware/article/details/7060306、http://www.oracle.com/technetwork/cn/articles/11g-pivot-101924-zhs....
sqloracle存储 (列名 数据类型 [ default 默认值] [ 约束条件] [ , ...] ) Leshami 2018/08/07 1K0 oracle中更改表名语句,转:取Oracle 表名 字段名 注释等实用语句 oracle数据库sql select t.*,i.index_type fromuser_ind_columns t,user_indexes i 全栈程序员站长 2022/08/29 1.4K0 Oracle必知的...
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 ...
--2.3 命令执行结束后,select * from chained_rows,即可查询到存在行迁移/行链接的记录。 --2.4 在执行该命令前,需要先在该数据库账号下,创建辅助表: CHAINED_ROWS。如下脚本: -- SQL>start $ORACLE_HOME/rdbms/admin/utlchain.sql --3 行迁移和行链接的处理方法。
num_rows / 1024 / 1024 / b.seg_bytes_mb, 2)) * 100) > 30 order by b.seg_bytes_mb desc; #查询sql执行计划(根据sql_id) select * from table(dbms_xplan.display_cursor('5uv6crpj12y0p',NULL,'ADVANCED +PEEKED_BINDS')); #根据sqlid查看sql select a.* from v$sql a where a.SQL_...
5 rows selected. Thepivot_clauseletsyou write cross-tabulation queries that rotate rows into columns, aggregatingdata in the process of the rotation. The output of a pivot operation typicallyincludes more columns and fewer rows than the starting data set.Thepivot_clauseperforms the following steps:...