Hello,
I have a text file with n lines in the following format (9 column fields):
Example:
contig00012 149606 G C 49 68 60 18 c$cccccacccccccccc^c
I need to count the number of lower-case and upper-case occurences in column 9, respectively, of the... (3 Replies)
Guys,
I am trying the following:
i have a log file of a webbap which logs in the following pattern:
2011-08-14 21:10:04,535 blablabla ERROR blablabla
bla
bla
bla
bla
2011-08-14 21:10:04,535 blablabla ERROR blablabla
bla
bla
bla
... (6 Replies)
Hello Is there a way to calculate how many times a particular symbol appeared in a string before a particular word.
Desktop/Myfiles/pet/dog/puppy
So, I want to count number of occurence of"/" in this directory before the word dog lets say.
Cheers,
Bob (3 Replies)
Hello All,
I got a requirement when I was working with a file. Say the file has unloads of data from a table in the form
1|121|asda|434|thesi|2012|05|24|
1|343|unit|09|best|2012|11|5|
I was put into a scenario where I need the field count in all the lines in that file. It was simply... (6 Replies)
Hi all,
If i would like to process a file input as below:
col1 col2 col3 ...col100
1 A C E A ...
3 D E G A
5 T T A A
6 D C A G
how can i perform a for loop to count the occurences of letters in each column? (just like uniq -c ) in every column.
on top of that, i would also like... (8 Replies)
Hello,
I have a table that looks like what is shown below:
AA
BB
CC
XY
PQ
RS
AA
BB
CC
XY
RS
I would like the total counts depending on the set they belong to:
if search pattern is in {AA, BB, CC} --> count them as Type1 | wc -l (3 Replies)
I am trying to confirm the counts from another code and tried the below awk, but the syntax is incorrect. Basically, outputting the counts of each condition in $8. Thank you :)
awk '$8==/TYPE=snp/ /TYPE=ins/ /TYPE=del/ {count++} END{print count}'... (6 Replies)
Hi all,
I am looking for to filter out based on 7th character and list the number of occurrence based on the 7th character if p , d , o or m
1. if 7th character is p , Output should be: p_hosts = N
2. if 7th character is d , Output should be: d_hosts = N
3. if 7th character is o , Output... (10 Replies)
Discussion started by: rveri
10 Replies
LEARN ABOUT FREEBSD
begin
BEGIN(7) SQL Commands BEGIN(7)NAME
BEGIN - start a transaction block
SYNOPSIS
BEGIN [ WORK | TRANSACTION ] [ transaction_mode [, ...] ]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
DESCRIPTION
BEGIN initiates a transaction block, that is, all statements after a BEGIN command will be executed in a single transaction until an
explicit COMMIT [commit(7)] or ROLLBACK [rollback(7)] is given. By default (without BEGIN), PostgreSQL executes transactions in ``autocom-
mit'' mode, that is, each statement is executed in its own transaction and a commit is implicitly performed at the end of the statement (if
execution was successful, otherwise a rollback is done).
Statements are executed more quickly in a transaction block, because transaction start/commit requires significant CPU and disk activity.
Execution of multiple statements inside a transaction is also useful to ensure consistency when making several related changes: other ses-
sions will be unable to see the intermediate states wherein not all the related updates have been done.
If the isolation level or read/write mode is specified, the new transaction has those characteristics, as if SET TRANSACTION [set_transac-
tion(7)] was executed.
PARAMETERS
WORK
TRANSACTION
Optional key words. They have no effect.
Refer to SET TRANSACTION [set_transaction(7)] for information on the meaning of the other parameters to this statement.
NOTES
START TRANSACTION [start_transaction(7)] has the same functionality as BEGIN.
Use COMMIT [commit(7)] or ROLLBACK [rollback(7)] to terminate a transaction block.
Issuing BEGIN when already inside a transaction block will provoke a warning message. The state of the transaction is not affected. To
nest transactions within a transaction block, use savepoints (see SAVEPOINT [savepoint(7)]).
For reasons of backwards compatibility, the commas between successive transaction_modes can be omitted.
EXAMPLES
To begin a transaction block:
BEGIN;
COMPATIBILITY
BEGIN is a PostgreSQL language extension. It is equivalent to the SQL-standard command START TRANSACTION [start_transaction(7)], whose ref-
erence page contains additional compatibility information.
Incidentally, the BEGIN key word is used for a different purpose in embedded SQL. You are advised to be careful about the transaction
semantics when porting database applications.
SEE ALSO
COMMIT [commit(7)], ROLLBACK [rollback(7)], START TRANSACTION [start_transaction(7)], SAVEPOINT [savepoint(7)]
SQL - Language Statements 2010-05-14 BEGIN(7)