oracle统计表的所有列的非空记录数据
适合查询统计,每天监控表数据入库的情况,统计业务量的增长情况等。具体的需要配合自己的业务定
有两种展现方式,第一种是是执行完,直接看完输出结果。第二种是把输出结果插入到中间表,查询中间查看输出结果(未使用统计信息查询,是因为很多时候,需要知道实际的数量,而统计信息有时候不满足)
第一种方式:直接输出结果
创建存储过程
CREATE OR REPLACE PROCEDURE TEST IS
v_sql varchar2(2000);
v_rows number;
begin
for i in (select column_name from all_tab_columns where TABLE_NAME = 'LOT') loop
v_sql :='select count(1) from lot where '|| i.column_name ||' is not null';
execute immediate v_sql into v_rows;
insert into test1 values(i.column_name,v_rows);
commit;
end loop;
end;
设置输出
SQL> set serveroutput on
调用存储过程
SQL> exec test;
SHIPPED_QTY2,0
SHIPPED_QTY1,0
RETICLE_RRN,0
EXECUTION_RRN,14791
WFL_STEP_PATH,14791
NEXT_JOB_RRN2,0
NEXT_JOB_RRN1,0
JOB_RRN,10
NEXT_RECIPE_STRING2,0
NEXT_RECIPE_STRING1,0
RECIPE_STRING,0
EQPT_RRN,12173
BOR_RRN,296
...........
第二种方式:插入中间表
创建中间表
create table test1(column_name varchar2(100),row_num number,table_name varchar2(100))
创建存储过程
CREATE OR REPLACE PROCEDURE TEST IS
v_sql varchar2(2000);
v_rows number;
begin
for i in (select column_name from all_tab_columns where TABLE_NAME = 'LOT') loop
v_sql :='select count(1) from lot where '|| i.column_name ||' is not null';
execute immediate v_sql into v_rows;
insert into test1 values(i.column_name,v_rows);
commit;
end loop;
end;
执行存储过程
查看输出结果
SQL> select * from test1;
COLUMN_NAME ROW_NUM TABLE_NAME
--------------------------------------------------------------- ---------- --------------------------------------------------------------------------------
CREATED_PLAN_LOT_RRN 15154 LOT
HOT_FLAG 15154 LOT
PRIORITY 15154 LOT
STARTED_FLAG 15154 LOT
STARTED_TIMESTAMP 15154 LOT
CREATE_CATEGORY 15154 LOT
CREATED_TIMESTAMP 15154 LOT
END_TIMESTAMP 369 LOT
DUE_DATE 205 LOT