10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have an input file as shown below:
20140102;13:30;FR-AUD-LIBOR-1W;2.495
20140103;13:30;FR-AUD-LIBOR-1W;2.475
20140106;13:30;FR-AUD-LIBOR-1W;2.495
20140107;13:30;FR-AUD-LIBOR-1W;2.475
20140108;13:30;FR-AUD-LIBOR-1W;2.475
20140109;13:30;FR-AUD-LIBOR-1W;2.475... (2 Replies)
Discussion started by: shash
2 Replies
2. Shell Programming and Scripting
Hello Friends,
I have a input file having hundreds of rows. I want them to translate in to columns if column 1 is same.
Input data:
zp06 xxx
zp06 rrr
zp06 hhh
zp06 aaa
zp06 ggg
zp06 qwer
zp06 ser
zl11 old3
zl11 old4
zl11 old5
zl11 old6
zl11 old7
zm14 luri
zm14 body
zm14 ucp (9 Replies)
Discussion started by: suresh3566
9 Replies
3. UNIX for Dummies Questions & Answers
I have an Output file which has the result
YYYY 95,77
YYYY
YYYY 95
YYYY 95
YYYY 95
YYYY 95
YYYY 95
YYYY 95
YYYY 95
YYYY 95
YYYY
YYYY
YYYY
YYYY
I would like to display the above along with a single line with above info. Final output should be
YYYY 95 (3 Replies)
Discussion started by: priyanka.premra
3 Replies
4. Shell Programming and Scripting
Hi All,
I have following input file. I wish to retain those lines which match multiple search criteria. The search criteria is stored in a variable seperated from each other by comma(,).
SEARCH_CRITERIA = "REJECT, DUPLICATE"
Input File:
ERROR,MYFILE_20130214_11387,9,37.75... (3 Replies)
Discussion started by: angshuman
3 Replies
5. Shell Programming and Scripting
each individual (row) has genotype expressed for each SNP (column)
file1.txt
1 1 A G A T G T A A A A A A A A A A A A A A A A A A A A A
2 2 G A A A A A A A A A A A A A A A A A A A A A A A A A A
3 3 A A A A A A A A A A A A A A A A A A A A A A A A A A A
4 4 G A G T A T A A A A A A A A A A A... (3 Replies)
Discussion started by: johnkim0806
3 Replies
6. Shell Programming and Scripting
Hi,
I have a file with multiple columns and for column 5 I want to extract that row into another file if it is equal to or greater than a certain value.
For example:
FAR 4 5 7 LOP
GAT 3 3 3 POL
I want values that are greater than 5 for column 4. So the final file will look like... (1 Reply)
Discussion started by: phil_heath
1 Replies
7. Shell Programming and Scripting
Guys,
I manages to get awk to search and print the files that I want to delete. However I am stuck on the delete portion.
Here is the command that I am using to fins these files.
find /usr/local/apache/conf/vhosts/ -type f | awk '/e$/'
The output is perfect. The files look like so:
... (4 Replies)
Discussion started by: jaysunn
4 Replies
8. Shell Programming and Scripting
I need to delete rows based on the number of lines in a different file, I have a piece of code with me working but when I merge with my C application, it doesnt work.
sed '1,'\"`wc -l < /tmp/fileyyyy`\"'d' /tmp/fileA > /tmp/filexxxx
Can anyone give me an alternate solution for the above (2 Replies)
Discussion started by: Muthuraj K
2 Replies
9. Shell Programming and Scripting
Hi all!
A bit of background: I am trying to create a script that formats SQL statements. I have gotten so far as to add new lines based on certain match criteria like commas, keywords etc. In the process, I end up adding newlines where I don't want.
For example: substr(colName, 1, 10)... (3 Replies)
Discussion started by: jayarkay
3 Replies
10. Shell Programming and Scripting
Hi,
I want a UNIX command that can filter out rows with certain criteria.
The file is tab deliminated. Row one is just a value. Basically what I want to do is select based on the name and character at the end (o). So lets lets say i want a row that has WashU and (o) then it would print... (2 Replies)
Discussion started by: phil_heath
2 Replies
DELETE(7) SQL Commands DELETE(7)
NAME
DELETE - delete rows of a table
SYNOPSIS
DELETE FROM [ ONLY ] table [ [ AS ] alias ]
[ USING usinglist ]
[ WHERE condition | WHERE CURRENT OF cursor_name ]
[ RETURNING * | output_expression [ [ AS ] output_name ] [, ...] ]
DESCRIPTION
DELETE deletes rows that satisfy the WHERE clause from the specified table. If the 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 that provides a faster mechanism to remove all rows from a table.
By default, DELETE will delete rows in the specified table and all its child tables. If you wish to delete only from the specific table
mentioned, you must use the ONLY clause.
There are two ways to delete rows in a table using information contained in other tables in the database: using sub-selects, or specifying
additional tables in the USING clause. Which technique is more appropriate depends on the specific circumstances.
The optional RETURNING clause causes DELETE to compute and return value(s) based on each row actually deleted. Any expression using the
table's columns, and/or columns of other tables mentioned in USING, can be computed. The syntax of the RETURNING list is identical to that
of the output list of SELECT.
You must have the DELETE privilege on the table to delete from it, as well as the SELECT privilege for any table in the USING clause or
whose values are read in the condition.
PARAMETERS
ONLY If specified, delete rows from the named table only. When not specified, any tables inheriting from the named table are also pro-
cessed.
table The name (optionally schema-qualified) of an existing table.
alias A substitute name for the target table. When an alias is provided, it completely hides the actual name of the table. For example,
given DELETE FROM foo AS f, the remainder of the DELETE statement must refer to this table as f not foo.
usinglist
A list of table expressions, allowing columns from other tables to appear in the WHERE condition. This is similar to the list of
tables that can be specified in the FROM Clause [select(7)] of a SELECT statement; for example, an alias for the table name can be
specified. Do not repeat the target table in the usinglist, unless you wish to set up a self-join.
condition
An expression that returns a value of type boolean. Only rows for which this expression returns true will be deleted.
cursor_name
The name of the cursor to use in a WHERE CURRENT OF condition. The row to be deleted is the one most recently fetched from this cur-
sor. The cursor must be a non-grouping query on the DELETE's target table. Note that WHERE CURRENT OF cannot be specified together
with a Boolean condition. See DECLARE [declare(7)] for more information about using cursors with WHERE CURRENT OF.
output_expression
An expression to be computed and returned by the DELETE command after each row is deleted. The expression can use any column names
of the table or table(s) listed in USING. Write * to return all columns.
output_name
A name to use for a returned column.
OUTPUTS
On successful completion, a DELETE command returns a command tag of the form
DELETE count
The count is the number of rows deleted. If count is 0, no rows matched the condition (this is not considered an error).
If the DELETE command contains a RETURNING clause, the result will be similar to that of a SELECT statement containing the columns and val-
ues defined in the RETURNING list, computed over the row(s) deleted by the command.
NOTES
PostgreSQL lets you reference columns of other tables in the WHERE condition by specifying the other tables in the USING clause. For exam-
ple, to delete all films produced by a given producer, one can do:
DELETE FROM films USING producers
WHERE producer_id = producers.id AND producers.name = 'foo';
What is essentially happening here is a join between films and producers, with all successfully joined films rows being marked for dele-
tion. This syntax is not standard. A more standard way to do it is:
DELETE FROM films
WHERE producer_id IN (SELECT id FROM producers WHERE name = 'foo');
In some cases the join style is easier to write or faster to execute than the sub-select style.
EXAMPLES
Delete all films but musicals:
DELETE FROM films WHERE kind <> 'Musical';
Clear the table films:
DELETE FROM films;
Delete completed tasks, returning full details of the deleted rows:
DELETE FROM tasks WHERE status = 'DONE' RETURNING *;
Delete the row of tasks on which the cursor c_tasks is currently positioned:
DELETE FROM tasks WHERE CURRENT OF c_tasks;
COMPATIBILITY
This command conforms to the SQL standard, except that the USING and RETURNING clauses are PostgreSQL extensions.
SQL - Language Statements 2010-05-14 DELETE(7)