从 sql 脚本返回值到 shell 脚本

Question

我有调用以下 sql 脚本的 shell 脚本：

     INSERT INTO SEMANTIC.COUNT_STATISTICS (...);
     UPDATE SEMANTIC.COUNT_STATISTICS 
     SET PRNCT_CHANGE = 1.1;


  --want to store result of this bellow select statement in model_count variable

      select PRNCT_CHANGE
      FROM SEMANTIC.COUNT_STATISTICS
      WHERE model = '&MY_MODEL'
      AND NEW_DATE = (
                      select max(NEW_DATE)
                      from SEMANTIC.COUNT_STATISTICS
                      where MODEL = '&MY_MODEL'
                     );

现在，如何将这个 PERCENTAGE_NUMBER 变量返回到我的 shell 脚本？

我的shell脚本如下：

#!/bin/bash
#
# setup oracle, java, and d2rq environment
. /etc/profile.d/oracle.sh
. /etc/profile.d/java.sh
. /etc/profile.d/d2rq.sh

cd /opt/D2RQ

model_count=$(sqlplus user/pass @count.sql 'MODEL')

if ["$model_count" > 0]; then
   echo "percentage count is positive"
else
   echo "its negative"

我希望将最后一个 SELECT 语句结果存储到我的 shell 脚本中的 model_count 变量中。

有人知道为什么不工作吗？

Answer 1

使用 bash 函数的 bash 示例（注意！数据库操作系统身份验证“/”）

#!/bin/bash

get_count () {
    sqlplus -s / <<!
    set heading off
    set feedback off
    set pages 0
    select count(*) from all_objects where object_type = '$1'; 
!
}

count=$(get_count $1)

echo $count

if [ "$count" -gt 0 ]; then
    echo "is greater than zero"
else
    echo "is less or equal to zero"
fi


~/tmp/ $ ./count.sh INDEX
2922
is greater than zero
~/tmp/ $ ./count.sh TABLE
1911
is greater than zero
~/tmp/ $ ./count.sh FUNCTION
226
is greater than zero
~/tmp/ $ ./count.sh "SUPEROBJECT"
0
is less or equal to zero

Answer 2

我实际上所做的是我将这 2 个 queires 分开并在我的 shell 脚本中分别调用它们：

sqlplus -S user/pass << EOF
whenever sqlerror exit 1;
set echo on
@/opt/D2RQ/model_count.sql '$MODEL'  <--model_count.sql still has those INSERT & UPDATE statements
exit;
EOF

model_count=`sqlplus -S user/pass << EOF
SELECT PRNCT_CHANGE
 FROM COUNT_STATISTICS
WHERE model = '$MODEL'
AND NEW_DATE = (
                select max(NEW_DATE)
                from COUNT_STATISTICS
                where MODEL = '$MODEL'
               );
exit;
EOF`


if [ $model_count >= 0 ]; then
    echo "$model_count"
else
         echo "'$MODEL' is negative " | mail -s "scripts issues" -c angelina1984@aol.com
fi