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BASH Script Won't Successfully Execute Query - Suggestions Needed

Posted on 2015-02-07
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Last Modified: 2015-02-08
My script is designed to cycle through environments, hit a database and check to see if any first/last name combination has an associated user ID. I am not sure why I'm getting the error listed below.

    #/bin/bash

    #specify user to search for  *******DO NOT PUT SPACE, ie. jaylefler
    echo "Please enter user first name: "
    read first_name

    echo "Please enter user last name: "
    read last_name

    echo "Please enter LDAP User ID: "
    read ldapuser

    echo "Please enter LDAP password: "

    stty -echo

    read ldappw

    stty echo
    #logs to write output to
    log="ui_${username}_access.log"

    #create file if not exist, else null it
    [[ -f ${log} ]] && cat /dev/null > ${log} || touch ${log}

    #log it all
    {

    echo "environment"
    sshpass -p $ldappw ssh $ldapuser@54.123.777.567 'mysql -h host -u user -ppassword database -e "select user_id from users where first like "%'${first_name}'%" and last like "%'${last_name}'%";"'

    } > $log

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When I execute the script, I receive the following errors:

    Please enter user first name: 
    jay
    Please enter user last name: 
    lefler
    Please enter LDAP User ID: 
    jlefler
    Please enter LDAP password: 
    ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check   the manual that corresponds to your MySQL server version for the right syntax to use near '%jay% and last like %lefler%' at line 1
    jlefler@ubuntu:~/Desktop$ 

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I've tried several variations with the syntax I use with the script. I'm at a loss.
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Question by:TampaJay
  • 3
5 Comments
 
LVL 76

Expert Comment

by:arnold
ID: 40596321
Your pattern % is outside the single quote.

The query needs to look like
Select user_id from table where firstname like '%firstname%'
In your case, you are placing the single quote after the % which makes the query look as
Select user_id from table where firstname like %'firstname'%. Which is why you are getting the error.
Replace your select with the one below
select user_id from users where first like '%${first_name}%' and last like '%${last_name}%';

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You should keep track of your use of quotes, a sequential closes the prior
You should only gave one set to open and close if you must have quotes within you have to escape them using the \" method.

In the select the quote (") is out of place.
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LVL 84

Accepted Solution

by:
ozo earned 500 total points
ID: 40596333
the quotes are not getting passed to mysql.  try something like
ssh $ldapuser@54.123.777.567 'mysql -h host -u user -ppassword database -e "select user_id from users where first like '"'%${first_name}%' and last like '%${last_name}%';"'"'
0
 

Author Comment

by:TampaJay
ID: 40596411
arnold, when using your suggestion I got the following output:

ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%jay% and last like %lefler%' at line 1

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ozo, when using your suggestion I got the following output I received the correct results. Thank you so much! However, in my log I'm getting the following:

environment
user_id
jlefler

Anyway I can prevent 'user_id' from showing up? Or will I need to do post-processing?
0
 
LVL 76

Expert Comment

by:arnold
ID: 40596423
The quotes and single quotes as ozo pointed out are being stripped.

An option could be to change the
(Ssh user@host "echo \\\"select user_id from table where firstname like '%${firstname}%' and lastname like '%${lastname}%';\\\" \| mysql -uusername -ppassword database")  >> $log

the output you are getting is a table column name, resulting data.
0
 
LVL 76

Expert Comment

by:arnold
ID: 40596425
Missed,




You can pump the output pre output to log through grep -v user_id
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