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I need some help with extracting some data from one file and put in another file.
Basically I have an sql file that has bunch of tables and data. and ...
- 02-27-2008 #1Just Joined!
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- Feb 2008
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- 1
how to extract data from a file
I need some help with extracting some data from one file and put in another file.
Basically I have an sql file that has bunch of tables and data. and looks something like this:
CREATE TABLE `table1` ...
(table structure here)
(inserts data here)
CREATE TABLE `table1` ...
(table structure here)
(inserts data here)
CREATE TABLE `table3` ...
(table structure here)
(inserts data here)
and goes on for about 100 tables.. Im trying to figure out out to extract a specific table and put into a separate file.
For example, if i wanted to copy table50 to anther file, what would be the steps to find what line table 50 starts, and what line table 51 starts, as the ending point of table 50, and then put those lines into another file.
Any help would be appreciated. thanks
- 02-27-2008 #2Linux User
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- Aug 2006
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- 458
Code:awk 'BEGIN{RS=""}/table50/' file > outfile
- 02-27-2008 #3Linux Enthusiast
- Join Date
- Aug 2006
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- 631
The solution of Ghostdog74 assumes you only have an empty line between each sql-statement.
If you also have empty lines within a statement you may try this if the first 3 fields of the first line look like:
CREATE TABLE table1 ...
where s is a variable with tabel name.Code:awk -v s="table1" ' $1=="CREATE" && !f{if($3==s){f=1;print;next}} $1=="CREATE" && f{exit} f' file > another_file
Regards


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