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Full Discussion: Help with Data Sorting
Top Forums UNIX for Dummies Questions & Answers Help with Data Sorting Post 302504865 by ctsgnb on Tuesday 15th of March 2011 03:53:26 PM
Old 03-15-2011
printf "%s\t%s\t%s\t%s\t%s\n" "" a b c dDisplay the first line using \t as <tab> separator and \n for a newline
&&logical "AND" : if left side got processed with return code 0, then process right side
awk 'NR>1{for (i=1;i<NF+1;i++) I[$i]=$iskip first line of tst, for all other lines, scan the value of the field an put it in an associative array
A[$1]=($1==0)?1:$1;put the value of field 1 in an associative array A (but if this value is 0 then assign 1)
B[$2]=($2==0)?1:$2;put the value of field 2 in an associative array B (but if this value is 0 then assign 1)
C[$3]=($3==0)?1:$3;put the value of field 3 in an associative array C (but if this value is 0 then assign 1)
D[$4]=($4==0)?1:$4}put the value of field 4 in an associative array D (but if this value is 0 then assign 1)
ENDInstruction after the "END" word will be processed once the whole file has been scanned (refer to awk syntax manual)
{for (j in I) j scan all the possible values previously setup in array I
print display the following:
I[j],the value scanned
A[j]?1:0,if the scanned value is "true" then display 1 else display 0
B[j]?1:0,if the scanned value is "true" then display 1 else display 0
C[j]?1:0,if the scanned value is "true" then display 1 else display 0
D[j]?1:0}'if the scanned value is "true" then display 1 else display 0
OFS="\t"Output Field separator is set to <tab> key
tstname of the scanned file
sort -k1nsort the output of the previous command on key field 1 specified as numeric
Bonus info about "true"in awk, 0 or empty means "false", 1 or more or non-empty string means "true" this is why i need to check if the value is 0 : because if assigned to a field it must be reported as 1

Last edited by ctsgnb; 03-15-2011 at 07:32 PM..
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DROP 
TABLE(7) SQL Commands DROP TABLE(7) NAME
DROP TABLE - remove a table SYNOPSIS
DROP TABLE name [, ...] [ CASCADE | RESTRICT ] INPUTS name The name (optionally schema-qualified) of an existing table to drop. CASCADE Automatically drop objects that depend on the table (such as views). RESTRICT Refuse to drop the table if there are any dependent objects. This is the default. OUTPUTS DROP TABLE The message returned if the command completes successfully. ERROR: table "name" does not exist If the specified table does not exist in the database. DESCRIPTION
DROP TABLE removes tables from the database. Only its owner may destroy a table. A table may be emptied of rows, but not destroyed, by using DELETE. DROP TABLE always removes any indexes, rules, triggers, and constraints that exist for the target table. However, to drop a table that is referenced by a foreign-key constraint of another table, CASCADE must be specified. (CASCADE will remove the foreign-key constraint, not the other table itself.) NOTES Refer to CREATE TABLE and ALTER TABLE for information on how to create or modify tables. USAGE
To destroy two tables, films and distributors: DROP TABLE films, distributors; COMPATIBILITY
SQL92 SQL - Language Statements 2002-11-22 DROP TABLE(7)
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