I am new to SQL. My doubt is how to display the output inside the procedure like this.
I have various databases and its type and the current size all in one table 'predict_storage'
I want to display the output as:
UAT:
TMAP: 100G
TCIG: 200G
QA:
QMAP: 100G
QCIG: 200G
DR:
DRMAP: 100G
DRCIG: 200G
如果UAT是数据库类型和TMAP，则TCIG是数据库，当前大小为100g。所以我希望输出像这样基于数据库类型分类。
以下是代码：
CREATE OR REPLACE PROCEDURE test11 IS
db_original_name_var varchar2(30);
db_type varchar2(20);
db_name varchar2(40);
Used_space_var NUMBER;
MAX_Used_space_monthvar NUMBER;
RATE NUMBER;
avg_space_future_min NUMBER;
avg_space_future_max NUMBER;
avgsp NUMBER;
avg_space_3m NUMBER;
avg_space_6m Number;
avg_space_yr NUMBER;
CURSOR db_list_cur is
select original_db_name,database_type
from database_list;
Begin
open db_list_cur;
LOOP
fetch db_list_cur
into db_original_name_var,db_type;
EXIT WHEN db_list_cur%NOTFOUND;
select substr(avg(ave_used_space),0,6) INTO Used_space_var from month_space where db_original_name_var=database_name;
select substr(max(ave_used_space),0,6) INTO MAX_Used_space_monthvar from month_space where db_original_name_var=database_name;
--rate calc
RATE := (MAX_Used_space_monthvar-Used_space_var)/Used_space_var;
avg_space_future_max:=(Used_space_var)+(Used_space_var* RATE);
avg_space_future_min:=(Used_space_var)-(Used_space_var* RATE);
avgsp := (avg_space_future_max + avg_space_future_min)/2;
avg_space_3m :=(avgsp)+(avgsp* rate* 3);
avg_space_6m :=(avgsp)+(avgsp* rate* 6);
avg_space_yr :=(avgsp)+(avgsp* rate* 12);
insert into Predict_report
(
database_name ,
Grwoth_rate ,
Current_AVERAGE,
Space_3mn,
SPACE_6mn,
Space_yr,
database_type
)
values
(
db_original_name_var,
RATE,
round(avgsp,3),
round(avg_space_3m,3),
round(avg_space_6m,3),
round(avg_space_yr,3),
db_type
);
commit;
loop
dbms_output.put_line(db_type||':');
select database_name into db_name from predict_report where database_type=db_type;
dbms_output.put_line(db_name);
END LOOP;
END LOOP;
close db_list_cur;
END;
/
我拥有的表格 1）存储信息
DB_ID NUMBER(38)
DATABASE_NAME VARCHAR2(50)
DATABASE_SIZE NUMBER
TIME_STAMP DATE
FREE_SPACE VARCHAR2(50)
DATA_LINK_NAME VARCHAR2(50)
CUSTOMER_SPACE NUMBER
DATABASE_TYPE VARCHAR2(30)
USED_SPACE NUMBER
2) Database_list
DB_ID NUMBER
DB_NAME VARCHAR2(50)
DATALINK_NAME VARCHAR2(50)
DATABASE_TYPE VARCHAR2(20)
ORIGINAL_DB_NAME VARCHAR2(30)
3）预测报告
DATABASE_NAME NOT NULL VARCHAR2(50)
GRWOTH_RATE NUMBER
CURRENT_AVERAGE NUMBER
SPACE_3MN NUMBER
SPACE_6MN NUMBER
SPACE_YR NUMBER
DATABASE_TYPE VARCHAR2(20)
4）Month_space
DATABASE_NAME NOT NULL VARCHAR2(50)
GRWOTH_RATE NUMBER
CURRENT_AVERAGE NUMBER
SPACE_3MN NUMBER
SPACE_6MN NUMBER
SPACE_YR NUMBER
DATABASE_TYPE VARCHAR2(20)
----- sql文件是
set echo off numf 999G999G999G999 lin 32000 trims on pages 50000 head on feed off markup html off
alter session set nls_numeric_characters='.''' nls_date_format='Day DD. Month, YYYY';
spool /tmp/report.html
--prompt To: jialin.zhu@synchronoss.com
prompt TO: varun.jain@synchronoss.com
prompt cc: varun.jain@synchronoss.com
prompt From: varun.jain@synchronoss.com
prompt Subject: Daily space report
prompt Content-type: text/html
prompt MIME-Version: 1.0
set markup html on entmap off table 'BORDER="2" BGCOLOR="white" FONTCOLOR="black"'
prompt <i>Good morning, </i>
prompt <i>Here is the Space report as on &_DATE</i>
prompt <i>Kind Regards, </i>
------------------------------------------------------------------------------------------------------------------------------------------------
prompt <br/><h3>Database Space Report</h3>
set serveroutput on
CLEAR COLUMNS
Set HEADING ON
Set COLSEP ,
SET PAGESIZE 20000
SET timing off feedback off verify off echo off
prompt <br/><h3> Environment Space Summary</h3>
column database_type heading 'Database Type'
column Sum(current_average) format 9999 HEADING 'Total Space in GB'
select database_type,Sum(current_average) from predict_report group by database_type;
--------------------------------------------------------------------------------------------------------------------------------------------------
prompt <br/><h3> DR database Summary</h3>
COLUMN ('THETOTALSPACEINDRDATABASES:'||SUM(CURRENT_AVERAGE)||''||'GB') format 9999 heading 'total Space in DR database'
select ('The total space in DR databases :' ||Sum(current_average)||' '||'GB') from predict_report where DATABASE_TYPE not in ('UAT','QA');
------------------------------------------------------------------------------------------------------------------------------------------
prompt <br/><h3> databases Summary</h3>
column database_name format a30 heading ' DATABASE NAME'
column round(GRWOTH_RATE*100,0)||'%' heading 'GROWTH RATE'
COLUMN CURRENT_AVERAGE FORMAT 9999 HEADING 'TODAYS SPACE in GB'
COLUMN SPACE_3MN FORMAT 9999 HEADING 'SPACE AFT 3 MONTHS in GB'
COLUMN SPACE_6MN FORMAT 9999 HEADING 'SPACE AFT 6 MONTHS in GB'
COLUMN SPACE_YR FORMAT 9999 HEADING 'SPACE AFT A YEAR in GB'
truncate table Predict_report;
set serveroutput on
exec report;
SELECT database_name,round(GRWOTH_RATE*100,0)||'%',current_average,space_3mn,space_6mn,space_yr FROM Predict_report;
---------------------------------------------------------------------------------
prompt <br/><h3>Database Space Summary</h3>
column sum(current_average) FORMAT 9999 heading 'Total Space in GB'
column sum(space_3mn) FORMAT 9999 heading 'Total Space in 3 months in GB'
column sum(space_6mn) FORMAT 9999 heading 'Total Space in 6 months in GB'
column sum(space_yr) FORMAT 9999 heading 'Total Space in 1 year in GB'
select sum(current_average),sum(space_3mn),sum(space_6mn),sum(space_yr) from Predict_report ;
spool off;
---------to send the mail----------------
host /usr/sbin/sendmail -t </tmp/report.html
并且收到的电子邮件中的输出就像（在EMAIL中以表格形式）
DATABASE NAME GROWTH RATE TODAYS SPACE in GB SPACE AFT 3 MONTHS in GB SPACE AFT 6 MONTHS in GB SPACE AFT A YEAR in GB
CLNK 0% 199 200 200 202
CCIG 0% 562 563 563 565
DTXN 5% 330 377 424 518
DCIG 0% 414 416 418 422
QMAP 0% 16 16 17 17
QLNP 0% 44 44 44 44
QHTS 1% 32 32 33 34
QFKP 1% 37 38 39 41
QSAG 0% 168 169 170 172
CSAG 0% 812 815 818 824
LTATG 0% 25 25 25 25
QCIG 0% 208 209 209 211
TLNP 0% 341 341 341 341
TMAP 0% 60 61 61 62
TSAG 0% 223 226 228
答案 0 :(得分：0)
您现在用于输出的额外循环永远不会终止，因此执行该过程似乎会挂起，至少在您用尽dbms_output缓冲区空间之前;并且不检索当前值。并且它位于错误的位置，因为它会在每次循环时显示该类型的所有数据库的数据，因此您将获得重复（最多）。
虽然这似乎不是一种明智的方法，但是，至少因为你假设程序将始终由可以显示输出并启用输出的东西运行，你可以做这样的事情，之后 close db_list_cur：
db_type := null;
for r in (select database_type, database_name, current_average
from predict_report
order by database_type, database_name)
loop
if db_type is null or db_type != r.database_type then
dbms_output.put_line(r.database_type || ':');
db_type := r.database_type;
end if;
dbms_output.put_line(r.database_name ||' '||
to_char(nvl(r.current_average, 0), '999990.00') ||'G');
end loop;
...或基于您要插入的数据在主循环内，而不是在最后查询表（因为它们应该匹配）;但是无论你使用循环还是更简单的insert into predict_report select ...。
您不需要使用游标来计算统计数据或填充表格;你根本不需要PL / SQL。您可以将两个表连接在一起，并根据返回的值计算出数字。像这样的东西会这样做：
select database_name,
rate as grwoth_rate,
avg_used_space as current_average,
avg_used_space + (avg_used_space * rate * 3) as space3mn,
avg_used_space + (avg_used_space * rate * 6) as space6mn,
avg_used_space + (avg_used_space * rate * 12) as spaceyr,
database_type
from (
select database_name,
database_type,
avg_used_space,
max_used_space,
(max_used_space - avg_used_space)/avg_used_space as rate
from (
select dl.original_db_name as database_name,
dl.database_type,
trunc(avg(ave_used_space), 2) as avg_used_space,
trunc(max(ave_used_space), 2) as max_used_space
from database_list dl
join month_space ms on ms.database_name = dl.original_db_name
group by dl.original_db_name,
dl.database_type
)
);
你可以使用它插入到新表中，虽然不确定你是否真的需要它，如果你只是在程序中产生输出 - 不清楚是否是这种情况，尽管你似乎不想要显示您正在计算的所有统计数据。
我也不确定你的统计数据有多大意义。您似乎在计算任意数月的增长率，然后通过将该速率应用于数据库生命周期内的平均值而不是当前大小来预测未来大小，您似乎没有收集这些大小 - 您有当前的平均值，这不是一回事。