10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Linux Experts.
I have a requirement where i need to update the thousands of table definitions to extend the column length and character set therefore i am looking for some sort of linux script which i can use to update the length and chacterset.
I have two files
In first file i have 7... (1 Reply)
Discussion started by: Black-Linux
1 Replies
2. Shell Programming and Scripting
Hi all,
I'm loading data in database through sqlldr.
I want to know the total record count
And the number of records inserted in table..
what is the logic to achieve that.
Thanks (5 Replies)
Discussion started by: Pratiksha Mehra
5 Replies
3. Shell Programming and Scripting
Hello all,
Please help me for a script that compares two files and reads only those records that are to be inserted and updated.
File1:
c_id name place contact_no
1 abc xyz 34567
10 efg uvw 82725
6 hjk wth 01823
2 iuy ... (4 Replies)
Discussion started by: T@ni@
4 Replies
4. Shell Programming and Scripting
if
> wc -l data.txt
> 100
(meaning there are 100 rows)
i want to assgn 100 as n so that if i do
>echo n
it would give me
100
Thanks (5 Replies)
Discussion started by: johnkim0806
5 Replies
5. Shell Programming and Scripting
I have a file with the following format, i need to change de field9 each 3 rows to renumber field9 with gpo1, gpo2, gpo3.
I need to use awk
Original file
field1 field2 field3 field4 field5 field6 field7 field8 gpo3
field1 field2 field3 field4 field5 ... (3 Replies)
Discussion started by: robonet
3 Replies
6. Shell Programming and Scripting
Hi experts a have a very large file and I need to add two columns: the first one numbering the incidence of records and the another with the total count
The input file:
21 2341 A
21 2341 A
21 2341 A
21 2341 C
21 2341 C
21 2341 C
21 2341 C
21 4567 A
21 4567 A
21 4567 C
... (6 Replies)
Discussion started by: juelillo
6 Replies
7. UNIX for Dummies Questions & Answers
hi,
i am a new user in unix..and we have unix db2. i want to capture the no. of rows updated by a update db2 sql statement and redirect into a log file.
I've seen db2 -m...but not sure how the syntax should be. The update sql that I'm going to run is from a file...
Can you please share... (1 Reply)
Discussion started by: j_rymbei
1 Replies
8. Shell Programming and Scripting
Hello,
I have to compare two files file1 and file2, retrieve the number of lines modified (added, deleted or modified) in file2. Output must be like:
File2:
Added Deleted Changed Total
------ ------- -------- -----
2 1 1 4
Somebody... (2 Replies)
Discussion started by: nmattam
2 Replies
9. Shell Programming and Scripting
hi,
I have a log file , which is appending with current data
i need the extarct which is updated from last 30 minutes
the format of the date is Jun 18, 2008 8:59:18 AM
how can i subtract 30 mins from the current date
thanks
Tarun. (5 Replies)
Discussion started by: tarundeepdhawan
5 Replies
10. Shell Programming and Scripting
Hi all, i am doing a perl script to read from a db. I am able to retrieve the rows, but i am unable to return the number of rows selected. i tried
$selectedrows = $sth->numrows; i got the error msg:
Can't locate object method "numrows" via package "DBI::st"
i changed it to $selectedrows =... (7 Replies)
Discussion started by: new2ss
7 Replies
DELETE(7) SQL Commands DELETE(7)
NAME
DELETE - delete rows of a table
SYNOPSIS
DELETE FROM [ ONLY ] table [ WHERE condition ]
INPUTS
table The name (optionally schema-qualified) of an existing table.
condition
This is an SQL selection query which returns the rows which are to be deleted.
Refer to the SELECT statement for further description of the WHERE clause.
OUTPUTS
DELETE count
Message returned if items are successfully deleted. The count is the number of rows deleted.
If count is 0, no rows were deleted.
DESCRIPTION
DELETE removes rows which satisfy the WHERE clause from the specified table.
If the condition (WHERE clause) is absent, the effect is to delete all rows in the table. The result is a valid, but empty table.
Tip: TRUNCATE [truncate(7)] is a PostgreSQL extension which provides a faster mechanism to remove all rows from a table.
By default DELETE will delete tuples in the table specified and all its sub-tables. If you wish to only update the specific table men-
tioned, you should use the ONLY clause.
You must have write access to the table in order to modify it, as well as read access to any table whose values are read in the condition.
USAGE
Remove all films but musicals:
DELETE FROM films WHERE kind <> 'Musical';
SELECT * FROM films;
code | title | did | date_prod | kind | len
-------+---------------------------+-----+------------+---------+-------
UA501 | West Side Story | 105 | 1961-01-03 | Musical | 02:32
TC901 | The King and I | 109 | 1956-08-11 | Musical | 02:13
WD101 | Bed Knobs and Broomsticks | 111 | | Musical | 01:57
(3 rows)
Clear the table films:
DELETE FROM films;
SELECT * FROM films;
code | title | did | date_prod | kind | len
------+-------+-----+-----------+------+-----
(0 rows)
COMPATIBILITY
SQL92
SQL92 allows a positioned DELETE statement:
DELETE FROM table WHERE
CURRENT OF cursor
where cursor identifies an open cursor. Interactive cursors in PostgreSQL are read-only.
SQL - Language Statements 2002-11-22 DELETE(7)