Complex sed Command for Insert Command - sed

Question

I have a bunch of php files, which have many insert commands.
In each query, I want to insert a column variable admin_id = '$admin_id',
i.e., if the query is
insert into users (ch_id, num_value) values ('2', '100')
the query should be converted to
insert into users (admin_id, ch_id, num_value) values ($admin_id, '2', '100')
To do this, I have executed the following command
sed -i 's/\(insert.*into.*\) (\(.*values\)/\1 (admin_id, \2/' *.php
and
sed -i "s/\(insert.*into.*\) values (/\1 values ('\$admin_id', /" *.php
The above has worked successfully, but am still facing problem with SQL queries where there is no where in the query, i.e.,
insert into abctable (id,no)
to
insert into tablename (admin_id, id, no)
and
insert into abctable select $column from $tableperiod
to
insert into abctable select $column from $tableperiod where admin_id='$admin_id'
and
insert into abctable select $column from $tableperiod where abc != 'xyz'
to
insert into abctable select $column from $tableperiod where admin_id = '$admin_id' and abc != 'xyz'
How can I insert admin_id in these queries as well?
The queries in php files are executed by passing the query to the function in the following way:
execute_query("insert * from $table order by username");
I can find the queries still which are left to be modified by
executing
grep 'execute_query' *| grep insert| grep -v admin_id > stillleft.txt

Answer 1

I have solved it by using the following command
sed -e "s/\(query.*insert.*select.*where\)/& admin_id='\$admin_id' and /g" -e t \
-e "s/\(query.*insert.*select.*\)\")/\1 where admin_id='\$admin_id\")'/g" -e t \
-e "s/\(query.*insert.*\)(\(.*\)values (/\1(admin_id, \2values ('\$admin_id', /g" -e t \
-e "s/\(query.*insert.*(\)/& admin_id, /g" \
-i *.php

Answer 2

I'm not sure my testcases are right, but I think this could help you:
I changed the first statement, because I think it's easier and it matches the first and the second command of YOUR sed
sed -i 's/\(insert into .* (\)\(.*) values (\)\(.*\)) /\1admin_id, \2\$admin_id, \3/' *.php
The second (the first you are looking for) should work with the following
sed -i 's/\(insert into .* (\)\(.*) \)/\1admin_id, \2/' *.php
And the last two should work with this:
sed -i "s/\(insert into \w* select \$column from \$tableperiod\)/\1 where admin_id='\$admin_id'/" *.php
I hope this works for you, if not, please send a little bit more test data, if tested the commands with the text of your question as input

Answer 3

I you use multiple sed commands, you'll traverse the complete file each time. You can do it in a single pass. Assuming an input file infile that looks like this:
insert into users (ch_id, num_value) values ('2', '100')
insert into abctable (id, no)
insert into abctable select $column from $tableperiod
insert into abctable select $column from $tableperiod where abc != 'xyz'
we can use the following sed script sedscr
/^insert into/ {
s/\(([^)]*)\)(.*)\(([^)]*)\)/(admin_id, \1)\2($admin_id, \3)/
s/^([^(]+)\(([^)]*)\)$/\1(admin_id, \2)/
/\(.*\)/! {
/where/s/$/ and admin_id ='$admin_id'/
/where/!s/$/ where admin_id='$admin_id'/
}
}
It does the following:
if a line starts with insert into, then
for all lines with two pairs of parentheses, insert admin_id in the the first one and $admin_id in the second one
for lines with one pair of parentheses at the end, insert admin_id
if there are no parentheses, then
if there is a "where" clause, append and admin_id = '$admin_id'
else append where admin_id='$admin_id'
This can be called as follows:
$ sed -rf sedscr infile
insert into users (admin_id, ch_id, num_value) values ($admin_id, '2', '100')
insert into abctable (admin_id, id, no)
insert into abctable select $column from $tableperiod where admin_id='$admin_id'
insert into abctable select $column from $tableperiod where abc != 'xyz' and admin_id ='$admin_id'
If you can't use extened regular expressions (-r), the quoting of parentheses has to be inverted (all \( become ( etc.) and the + has to be replaced by \{1,\}.
The cumbersome regexes such as \(([^)]*)\) stand for "between literal parentheses, capture zero or more characters that are not a closing parenthesis" – this enables non-greedy capturing.