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Full Discussion: shell script: grep multiple lines after pattern match
Top Forums Shell Programming and Scripting shell script: grep multiple lines after pattern match Post 302444005 by mirfan on Tuesday 10th of August 2010 04:11:11 PM
Old 08-10-2010
Network shell script: grep multiple lines after pattern match
I have sql file containing lot of queries on different database table. I have to filter specific table queries.
Let say i need all queries of test1,test2,test3 along with four lines above it and sql queries can be multi lines or in single line.

Input file contains.

Code:
set INSERT_ID=1;
set TIMESTAMP=20100808
# at 233
# sql.session.value

INSERT INTO test1 (
column1,
column2,
column3,

VALUES

(
column1value,
column2value,
column3value
)

set INSERT_ID=21;
set TIMESTAMP=20100809
# at 2221
# sql.session.value

INSERT INTO notrequired (
column1

VALUES

(
column1value
)

set INSERT_ID=2;
set TIMESTAMP=20100809
# at 233
# sql.session.value

INSERT INTO test3 column1,column2 VALUES (column1value,column2value)

set INSERT_ID=2;
set TIMESTAMP=20100809
# at 233
# sql.session.value

UPDATE test1
SET column1=value,
column2=value,
column3=value
WHERE column3=value;

set INSERT_ID=11;
set TIMESTAMP=20100808
# at 2343
# sql.session.value

INSERT INTO test2 (
column1,
column2

VALUES

(
column1value,
column2value
)


I need to get all test1 and test2 table queries along with four above lines. I tried following but didn't work. Only grep first line of table.

shell] cat inputfile.sql | grep -wB4 "INSERT INTO test1" > outputfile.sql
shell] cat inputfile.sql | grep -wB4 "UPDATE test1" >> outputfile.sql
shell] cat inputfile.sql | grep -wB4 "INSERT INTO test2" >> outputfile.sql
shell] cat inputfile.sql | grep -wB4 "INSERT INTO test3" >> outputfile.sql

Output file should be look likes this,

Code:
set INSERT_ID=1;
set TIMESTAMP=20100808
# at 233
# sql.session.value

INSERT INTO test1 (
column1,
column2,
column3,

VALUES

(
column1value,
column2value,
column3value
)


set INSERT_ID=2;
set TIMESTAMP=20100809
# at 233
# sql.session.value

INSERT INTO test3 column1,column2 VALUES (column1value,column2value)


set INSERT_ID=2;
set TIMESTAMP=20100809
# at 233
# sql.session.value

UPDATE test1
SET column1=value,
column2=value,
column3=value
WHERE column3=value;

set INSERT_ID=11;
set TIMESTAMP=20100808
# at 2343
# sql.session.value

INSERT INTO test2 (
column1,
column2

VALUES

(
column1value,
column2value
)

Any help highly appreciated.
 

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