Find the pure prefixes and filter the file:
These problems of the fate of a line depending on a future line require storage or sorting, as going back is a bit hard. If you can cast it as a table, SQL is
Last edited by DGPickett; 02-22-2013 at 06:11 PM..
Hi Guys,
I need help in modifying a large text file containing more than 1-2 lakh rows of data using unix commands. I am quite new to the unix language
the text file contains data in a pipe delimited format
sdfsdfs
sdfsdfsd
START_ROW
sdfsd|sdfsdfsd|sdfsdfasdf|sdfsadf|sdfasdf... (9 Replies)
Fruit : Price : Quantity
apple : 20 : 40
chiku : 40 :30
Hey guys, i have written a code using sed to delete a specific char which is being typed in. But the problem i am having is , how can i expand my coding to actually allow it do delete the whole row. For example,... (21 Replies)
Dear UNIX community,
I would like to to count characters from a specific row and have them displayed line-by-line.
I have a file called testAwk2.csv which contain the following data:
rabbit penguin goat
giraffe emu ostrich I would like to count in the middle row individually... (4 Replies)
I know this is a complicated question but I will try to illustrate it with some data. I have a data file that looks like the following:
1341 NA06985 0 0 2 46.6432798439
1341 NA06991 NA06993 NA06985 2 48.8478948517
1341 NA06993 0 0 1 45.8022601455
1340 NA06994 0 0 1 48.780669145
1340... (1 Reply)
Hi all
I have a file which looks like this
1234|1|Jon|some text|some text
1234|2|Jon|some text|some text
3453|5|Jon|some text|some text
6533|2|Kate|some text|some text
4567|3|Chris|some text|some text
4567|4|Maggie|some text|some text
8764|6|Maggie|some text|some text
My third column is my... (9 Replies)
Hi,
I have a tab delimited text file where the first two columns equal numbers. I want to delete all rows where the value in the first column equals the second column. How do I go about doing that? Thanks!
Input:
1 1 ABC DEF
2 2 IJK LMN
1 2 ZYX OPW
Output:
1 2 ZYX OPW (2 Replies)
Dear fellows, I need your help.
I'm trying to write a script to convert a single column into multiple rows.
But it need to recognize the beginning of the string and set it to its specific Column number.
Each Line (loop) begins with digit (RANGE).
At this moment it's kind of working, but it... (6 Replies)
I have an xml file dumped from rrd file, that I want to "patch" so the xml file doesn't contain any blank hole in the resulting graph of the rrd file.
Here is the file.
<!-- 2015-10-12 14:00:00 WIB / 1444633200 --> <row><v> 4.0419731265e+07 </v><v> 4.5045912770e+06... (2 Replies)
Discussion started by: rk4k
2 Replies
LEARN ABOUT DEBIAN
sql::translator::schema::field
SQL::Translator::Schema::Field(3pm) User Contributed Perl Documentation SQL::Translator::Schema::Field(3pm)NAME
SQL::Translator::Schema::Field - SQL::Translator field object
SYNOPSIS
use SQL::Translator::Schema::Field;
my $field = SQL::Translator::Schema::Field->new(
name => 'foo',
table => $table,
);
DESCRIPTION
"SQL::Translator::Schema::Field" is the field object.
METHODS
new
Object constructor.
my $field = SQL::Translator::Schema::Field->new(
name => 'foo',
table => $table,
);
comments
Get or set the comments on a field. May be called several times to set and it will accumulate the comments. Called in an array context,
returns each comment individually; called in a scalar context, returns all the comments joined on newlines.
$field->comments('foo');
$field->comments('bar');
print join( ', ', $field->comments ); # prints "foo, bar"
data_type
Get or set the field's data type.
my $data_type = $field->data_type('integer');
sql_data_type
Constant from DBI package representing this data type. See "DBI Constants" in DBI for more details.
default_value
Get or set the field's default value. Will return undef if not defined and could return the empty string (it's a valid default value), so
don't assume an error like other methods.
my $default = $field->default_value('foo');
extra
Get or set the field's "extra" attibutes (e.g., "ZEROFILL" for MySQL). Accepts a hash(ref) of name/value pairs to store; returns a hash.
$field->extra( qualifier => 'ZEROFILL' );
my %extra = $field->extra;
foreign_key_reference
Get or set the field's foreign key reference;
my $constraint = $field->foreign_key_reference( $constraint );
is_auto_increment
Get or set the field's "is_auto_increment" attribute.
my $is_auto = $field->is_auto_increment(1);
is_foreign_key
Returns whether or not the field is a foreign key.
my $is_fk = $field->is_foreign_key;
is_nullable
Get or set whether the field can be null. If not defined, then returns "1" (assumes the field can be null). The argument is evaluated by
Perl for True or False, so the following are eqivalent:
$is_nullable = $field->is_nullable(0);
$is_nullable = $field->is_nullable('');
$is_nullable = $field->is_nullable('0');
While this is technically a field constraint, it's probably easier to represent this as an attribute of the field. In order keep things
consistent, any other constraint on the field (unique, primary, and foreign keys; checks) are represented as table constraints.
is_primary_key
Get or set the field's "is_primary_key" attribute. Does not create a table constraint (should it?).
my $is_pk = $field->is_primary_key(1);
is_unique
Determine whether the field has a UNIQUE constraint or not.
my $is_unique = $field->is_unique;
is_valid
Determine whether the field is valid or not.
my $ok = $field->is_valid;
name
Get or set the field's name.
my $name = $field->name('foo');
The field object will also stringify to its name.
my $setter_name = "set_$field";
Errors ("No field name") if you try to set a blank name.
full_name
Read only method to return the fields name with its table name pre-pended. e.g. "person.foo".
order
Get or set the field's order.
my $order = $field->order(3);
schema
Shortcut to get the fields schema ($field->table->schema) or undef if it doesn't have one.
my $schema = $field->schema;
size
Get or set the field's size. Accepts a string, array or arrayref of numbers and returns a string.
$field->size( 30 );
$field->size( [ 255 ] );
$size = $field->size( 10, 2 );
print $size; # prints "10,2"
$size = $field->size( '10, 2' );
print $size; # prints "10,2"
table
Get or set the field's table object. As the table object stringifies this can also be used to get the table name.
my $table = $field->table;
print "Table name: $table";
Returns the field exactly as the parser found it
equals
Determines if this field is the same as another
my $isIdentical = $field1->equals( $field2 );
AUTHOR
Ken Youens-Clark <kclark@cpan.org>.
perl v5.14.2 2012-01-18 SQL::Translator::Schema::Field(3pm)