shell调用sqlplus查询oracle

Posted 2020-11-03 薛文博

[[email protected] shell_test]$ cat echo_time 
#!/bin/sh

一.最简单的调用sqlplus
sqlplus -S "sys/unimas as sysdba" << !
select to_char(sysdate,‘yyyy-mm-dd‘) today from dual;
exit;
!

[[email protected] shell_test]$ ./echo_time 

运行结果:

TODAY
----------
2011-03-21

-S 是silent mode，不输出类似“SQL>”，连接数据库，关闭数据库之类的信息。

EOF

eof可以是任何字符串 比如"laldf"那么当你输入单独一行laldf时"shell认为输入结束，但是必须表示块开始必须使用<<；
开始和结束要匹配这个符号“<<”后面的内容
举例子:

 

[[email protected] shell_test]$ sqlplus -s "sys/unimas as sysdba" << abc
> select to_char(sysdate,‘yyyy-mm-dd‘) today from dual;
> exit;
> abc

 

运行结果

TODAY
----------
2011-03-21

二.sqlplus的结果传递给shell的方法一

 

[[email protected] shell_test]$ cat test2.sh 
#!/bin/bash
VALUE=`sqlplus -S "test/unimas" << !
set heading off
set feedback off
set pagesize 0
set verify off
set echo off
select to_char(sysdate,‘yyyy-mm-dd‘) today from dual;
exit
!`
echo $VALUE
if [ -n "$VALUE" ]; then
echo "The rows is $VALUE"
exit 0
else
echo "There is no row"
fi

 

三.sqlplus的结果传递给shell的方法二

 

[[email protected] shell_test]$ cat test1.sh 
#!/bin/bash
sqlplus -S "test/unimas" << !
set heading off
set feedback off
set pagesize 0
set verify off
set echo off
col coun new_value v_coun
select count(*) coun from lesson;
exit v_coun
!
VALUE="$?"
echo "show row:$VALUE"

 

col coun new_value v_coun v_coun为number类型。因为exit 只能返回数值类型。

四.把shell参数传递给sqlplu

 

#!/bin/bash
t_id="$1"
sqlplus -S "test/unimas" << !
set heading off
set feedback off
set pagesize 0
set verify off
set echo off
select teachername from teacher where id=$t_id;
exit
!

 

五.sqlplus的结果存储在文件中

 

#!/bin/sh
sqlplus -S "test/unimas"<<EOF
set heading off
set feedback off
set pagesize 0
set verify off
set echo off
spool spool_file
SELECT * from teacher;
spool off
exit;
EOF