A script to loop through a WordPress database and search for text

We maintain both a WordPress development environment and a production environment. I have written a script that copies a WordPress site to the local machine. In that script I change the GUID (even thought this page says you shouldn’t), siteurl, and home. I change the GUID, because the site has not been publicly accessible, so I believe the warning on the documentation page does not apply.

One thing that I always wanted to do is make sure that the old (dev) site url is not elsewhere in the database. So I figured out this script below that loops thorough all the tables, and all the columns in the database searching for text, in this case the old site url.

DATABASENAME="mywpdb"
SEARCHTEXT="devURL"

for TABLE in $(mysql --batch --skip-column-names -e "use $DATABASENAME;show tables"); do
for COLUMN in $(mysql --batch --skip-column-names -e "use $DATABASENAME;SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = '"$TABLE"' AND TABLE_SCHEMA = '"$DATABASENAME"';"); do
query="use $DATABASENAME;select substring($COLUMN,1,100) as '"$TABLE":"$COLUMN"' from $TABLE WHERE $COLUMN like '%"$SEARCHTEXT"%';"
mysql -e "$query"
done
done