Hi,
I'm trying to assign a score to each row which will allow me to identify which rows differ. In the example file below, I've used "," to indicate column separators (my actual file has tab separators). In this example, I'd like to identify that row 1 and row 5 are the same, and row 2 and row... (4 Replies)
Hi All,
I have the following input which i want to process using AWK.
Rows,NC,amount
1,1202,0.192387
2,1201,0.111111
3,1201,0.123456
i want the following output
count of rows = 3 ,sum of amount = 0.426954
Many thanks (2 Replies)
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)
I have a text file where the second column is a list of numbers going from small to large. I want to extract the rows where the second column is smaller than or equal to 0.0001.
My input:
rs10082730 9e-08 12 46002702
rs2544081 1e-07 12 46015487
rs1425136 1e-06 7 35396742
rs2712590... (1 Reply)
Hi,
Please help me to convert the input file to a new one.
input file:
--------
1231231231 3 A
4561223343 0 D
1231231231 1 A
1231231231 2 A
1231231231 4 D
7654343444 2 A
4561223343 1 D
4561223343 2 D
the output should be:
--------------------
1231231231 3#1#2 A
4561223343 0 D... (3 Replies)
I have a space delimited text file. I want to extract rows where the third column has 0 as a value and write those rows into a new space delimited text file. How do I go about doing that? Thanks! (2 Replies)
Hi !
input:
A|B|C|D
A|F|C|E
A|B|I|C
A|T|I|B
As the title of the thread says, I would need to get:
1|3|2|4
I tried different variants of this command, but I don't manage to obtain what I need:
gawk 'BEGIN{FS=OFS="|"}{for(i=1; i<=NF; i++) a++} END {for (b in a) print b}' input
... (2 Replies)
I have a .csv file:
A,B,0.6
C,D,-0.7
D,E,0.1
A,E,0.45
D,G, -0.4
I want to select rows based on the values of the 3rd columns such that it is >=0.5 or <= -0.5
Thanks.
A,B,0.6
D,G, -0.7 (1 Reply)
Hi All,
I am trying to select the rows in a fixed width file based on values in the columns.
I want to select only the rows if column position 3-4 has the value AB
I am using cut command to get the column values. Is it possible to check if cut -c3-4 = AB is true then select only that... (2 Replies)
What is an efficient way of counting the number of unique values in a 400 column by 1000 row array and outputting the counts per column, assuming the unique values in the array are:
A, B, C, D
In other words the output should look like: Value COL1 COL2 COL3
A 50 51 52... (16 Replies)
Discussion started by: Geneanalyst
16 Replies
LEARN ABOUT CENTOS
alter_user_mapping
ALTER USER MAPPING(7) PostgreSQL 9.2.7 Documentation ALTER USER MAPPING(7)NAME
ALTER_USER_MAPPING - change the definition of a user mapping
SYNOPSIS
ALTER USER MAPPING FOR { user_name | USER | CURRENT_USER | PUBLIC }
SERVER server_name
OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ] )
DESCRIPTION
ALTER USER MAPPING changes the definition of a user mapping.
The owner of a foreign server can alter user mappings for that server for any user. Also, a user can alter a user mapping for his own user
name if USAGE privilege on the server has been granted to the user.
PARAMETERS
user_name
User name of the mapping. CURRENT_USER and USER match the name of the current user. PUBLIC is used to match all present and future
user names in the system.
server_name
Server name of the user mapping.
OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ] )
Change options for the user mapping. The new options override any previously specified options. ADD, SET, and DROP specify the action
to be performed. ADD is assumed if no operation is explicitly specified. Option names must be unique; options are also validated by
the server's foreign-data wrapper.
EXAMPLES
Change the password for user mapping bob, serverfoo:
ALTER USER MAPPING FOR bob SERVER foo OPTIONS (user 'bob', password 'public');
COMPATIBILITY
ALTER USER MAPPING conforms to ISO/IEC 9075-9 (SQL/MED). There is a subtle syntax issue: The standard omits the FOR key word. Since both
CREATE USER MAPPING and DROP USER MAPPING use FOR in analogous positions, and IBM DB2 (being the other major SQL/MED implementation) also
requires it for ALTER USER MAPPING, PostgreSQL diverges from the standard here in the interest of consistency and interoperability.
SEE ALSO
CREATE USER MAPPING (CREATE_USER_MAPPING(7)), DROP USER MAPPING (DROP_USER_MAPPING(7))
PostgreSQL 9.2.7 2014-02-17 ALTER USER MAPPING(7)