Batch MySQL if else statement - mysql

Question

I'm trying to create a batch script that will create a database when executed. If the database is already existing, the script should echo that it already exists. I have it working on Linux, but it's apparently much more different on Windows.
Here is the script:
#echo off
SET dbname=1234
SET user=1234
SET password=1234
SET hostinfo=test3
SET RESULT="mysql -u root -ppassword --skip-column-names -e SHOW DATABASES LIKE '%dbname%'"
if %RESULT% == "%dbname%" (
echo "The database already exists. You can use the reinstall function instead."
) else (
mysql -h localhost -u root -ppassword -e "CREATE USER '%user%'#'%%'"
mysql -h localhost -u root -ppassword -e "SET PASSWORD FOR '%user%'#'%%' = PASSWORD('%password%')"
mysql -h localhost -u root -ppassword -e "GRANT USAGE ON * . * TO '%user%'#'%%' IDENTIFIED BY '%password%' WITH MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0"
mysql -h localhost -u root -ppassword -e "CREATE DATABASE IF NOT EXISTS `%dbname%`"
mysql -h localhost -u root -ppassword -e "GRANT ALL PRIVILEGES ON `%dbname%` . * TO '%user%'#'%%'"
echo A new MySQL database has been created for you.
echo Username: %user%
echo Password: %password%
echo Database: %dbname%
echo Host: %hostinfo%:3306
)
The output is just the following:
Warning: Using a password on the command line interface can be insecure.
ERROR 1396 (HY000) at line 1: Operation CREATE USER failed for '1234'#'%'
Warning: Using a password on the command line interface can be insecure.
Warning: Using a password on the command line interface can be insecure.
Warning: Using a password on the command line interface can be insecure.
Warning: Using a password on the command line interface can be insecure.
A new MySQL database has been created for you.
Username: 1234
Password: 1234
Database: 1234
Host: test3:3306
How would I do this? It doesn't seem like the if else statement is working correctly...
Kind regards,
Dennis

Answer 1

please before if statement 'echo %RESULT% and %dbname%' it will help you to know why this problem happens
I'm suggesting to change the if to be if "%RESULT%" == "%dbname%"
The result variable include the string for the command but not executed .. so you have to execute it and set the out put into it.
Check this:
#echo off
SET dbname=1234
SET user=1234
SET password=1234
SET hostinfo=test3
SET RESULT="mysql -u root -ppassword --skip-column-names -e SHOW DATABASES LIKE '%dbname%'"
for /f "delims=" %%i in ('%RESULT%') do set RESULT=%%i
if %RESULT% == "%dbname%" (
echo "The database already exists. You can use the reinstall function instead."
) else (
mysql -h localhost -u root -ppassword -e "CREATE USER '%user%'#'%%'"
mysql -h localhost -u root -ppassword -e "SET PASSWORD FOR '%user%'#'%%' = PASSWORD('%password%')"
mysql -h localhost -u root -ppassword -e "GRANT USAGE ON * . * TO '%user%'#'%%' IDENTIFIED BY '%password%' WITH MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0"
mysql -h localhost -u root -ppassword -e "CREATE DATABASE IF NOT EXISTS `%dbname%`"
mysql -h localhost -u root -ppassword -e "GRANT ALL PRIVILEGES ON `%dbname%` . * TO '%user%'#'%%'"
echo A new MySQL database has been created for you.
echo Username: %user%
echo Password: %password%
echo Database: %dbname%
echo Host: %hostinfo%:3306
)
I did a similar batch before check this post
http://muhammadhamed.blogspot.com/2013/01/install-mysql-as-windows-service-from.html
I hope this could help!