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1. UNIX for Beginners Questions & Answers
Suppose I have a word which is repeating in a string continuously. I have a set of intervals. Then how do I find the number occurrences of that word in those intervals and their location of occurrences. For example - Suppose there is a huge string anfie.......sirn of 10000 letters. Now the word... (2 Replies)
Discussion started by: ANKIT ROY
2. UNIX for Dummies Questions & Answers
I want to add a letter to the end of a string if it repeats in a column.
so if I have a file like this:
the output should look like this:
DOG001-b (15 Replies)
Discussion started by: verse123
3. Shell Programming and Scripting
can someone please help me to get a script to cacluate the number of repetions for each (First name... (3 Replies)
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How can I get all combinations of 5 words from 10 words.
For example I have 3 words and I want to get all combinations of 2 words.
"A", "B", "C" it would like AB, BC, AC.
Maybe you know some usefull code or example.
Thanx a lot.
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5. Shell Programming and Scripting
I have a for loop that I use to extract integer values in a shell script (ksh). Now, I would like to add the values. My preference, from my c programming days, would be to do something like the commented out line below in the for loop. However, this is not recognised. So I use the line... (2 Replies)
Discussion started by: mikem22
I have 3 variables with different information.. they look like this (row-wise aswell):
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7. Shell Programming and Scripting
I am trying to add variables(float values) in a unix script but am getting an error
value=`expr $a + $b + $c`
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Plz help (13 Replies)
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I have a structure which contains n number of elements. For example:
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9. UNIX for Advanced & Expert Users
I'm just new to UNIX, does anyone know how to create a batch file in UNIX that does the following routines:
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in DOS, I set my sample input file as: set INPUTFILE=%1
in UNIX>> ????
2.) every file to be processed by executing a program... (1 Reply)
Discussion started by: kimpot7268
10. UNIX for Dummies Questions & Answers
Is anyone know some scripts to generate random number without repetition using bash; for example generate 10 different random numbers.
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SAVEPOINT(7) SQL Commands ROLLBACK TO SAVEPOINT(7)
ROLLBACK TO SAVEPOINT - roll back to a savepoint
ROLLBACK [ WORK | TRANSACTION ] TO [ SAVEPOINT ] savepoint_name
Roll back all commands that were executed after the savepoint was established. The savepoint remains valid and can be rolled back to again
later, if needed.
ROLLBACK TO SAVEPOINT implicitly destroys all savepoints that were established after the named savepoint.
The savepoint to roll back to.
Use RELEASE SAVEPOINT [release_savepoint(7)] to destroy a savepoint without discarding the effects of commands executed after it was estab-
Specifying a savepoint name that has not been established is an error.
Cursors have somewhat non-transactional behavior with respect to savepoints. Any cursor that is opened inside a savepoint will be closed
when the savepoint is rolled back. If a previously opened cursor is affected by a FETCH command inside a savepoint that is later rolled
back, the cursor position remains at the position that FETCH left it pointing to (that is, FETCH is not rolled back). Closing a cursor is
not undone by rolling back, either. A cursor whose execution causes a transaction to abort is put in a cannot-execute state, so while the
transaction can be restored using ROLLBACK TO SAVEPOINT, the cursor can no longer be used.
To undo the effects of the commands executed after my_savepoint was established:
ROLLBACK TO SAVEPOINT my_savepoint;
Cursor positions are not affected by savepoint rollback:
DECLARE foo CURSOR FOR SELECT 1 UNION SELECT 2;
FETCH 1 FROM foo;
ROLLBACK TO SAVEPOINT foo;
FETCH 1 FROM foo;
The SQL standard specifies that the key word SAVEPOINT is mandatory, but PostgreSQL and Oracle allow it to be omitted. SQL allows only
WORK, not TRANSACTION, as a noise word after ROLLBACK. Also, SQL has an optional clause AND [ NO ] CHAIN which is not currently supported
by PostgreSQL. Otherwise, this command conforms to the SQL standard.
BEGIN [begin(7)], COMMIT [commit(7)], RELEASE SAVEPOINT [release_savepoint(7)], ROLLBACK [rollback(7)], SAVEPOINT [savepoint(7)]
SQL - Language Statements 2010-05-14 ROLLBACK TO SAVEPOINT(7)