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Full Discussion: Count number of unique values in each column of array
Top Forums Shell Programming and Scripting Count number of unique values in each column of array Post 303011172 by Yoda on Sunday 14th of January 2018 02:10:21 PM
Old 01-14-2018
Here is an awk approach:-
Code:
awk '
        BEGIN {
                n = split ( "A B C D", T )
        }
        {
                for ( i = 1; i <= NF; i++ )
                        R[i FS $i] += 1
        }
        END {
                printf "VAL\t"
                for ( i = 1; i <= NF; i++ )
                        printf "COL%d\t", i
                printf "\n"

                for ( j = 1; j <= n; j++ )
                {
                        printf "%c\t", T[j]
                        for ( i = 1; i <= NF; i++ )
                                printf "%d\t", R[i FS T[j]]
                        printf "\n"
                }
        }
' file

This User Gave Thanks to Yoda For This Post:
Geneanalyst
 

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LEARN ABOUT PHP

db2_special_columns

DB2_SPECIAL_COLUMNS(3)							 1						    DB2_SPECIAL_COLUMNS(3)

db2_special_columns - Returns a result set listing the unique row identifier columns for a table

SYNOPSIS

       resource db2_special_columns (resource  $connection, string  $qualifier, string	$schema, string  $table_name, int  $scope)

DESCRIPTION

	Returns a result set listing the unique row identifier columns for a table.

PARAMETERS

	      o $connection
		- A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.

	      o $qualifier
		- A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass NULL or an empty string.

	      o $schema
		- The schema which contains the tables.

	      o $table_name
		- The name of the table.

	      o $scope
		-  Integer  value representing the minimum duration for which the unique row identifier is valid. This can be one of the following
		values:

	      +--------------+--------------------------------------+---+
	      |Integer value |					    |	|
	      | 	     |					    |	|
	      | 	     |		   SQL constant 	    |	|
	      | 	     |					    |	|
	      | 	     |		   Description		    |	|
	      | 	     |					    |	|
	      +--------------+--------------------------------------+---+
	      |      0	     |					    |	|
	      | 	     |					    |	|
	      | 	     |		 SQL_SCOPE_CURROW	    |	|
	      | 	     |					    |	|
	      | 	     | Row identifier is valid	only  while |	|
	      | 	     | the cursor is positioned on the row. |	|
	      | 	     |					    |	|
	      |      1	     |					    |	|
	      | 	     |					    |	|
	      | 	     |	      SQL_SCOPE_TRANSACTION	    |	|
	      | 	     |					    |	|
	      | 	     | Row  identifier	is  valid  for	the |	|
	      | 	     | duration of the transaction.	    |	|
	      | 	     |					    |	|
	      |      2	     |					    |	|
	      | 	     |					    |	|
	      | 	     |		SQL_SCOPE_SESSION	    |	|
	      | 	     |					    |	|
	      | 	     | Row  identifier	is  valid  for	the |	|
	      | 	     | duration of the connection.	    |	|
	      | 	     |					    |	|
	      +--------------+--------------------------------------+---+
RETURN VALUES

	Returns  a  statement resource with a result set containing rows with unique row identifier information for a table. The rows are composed
       of the following columns:

       +------------+---------------------------------------------------+
       |Column name |							|
       |	    |							|
       |	    |			 Description			|
       |	    |							|
       +------------+---------------------------------------------------+
       |   SCOPE    |							|
       |	    |							|
       |	    |							|
       |	    |							|
       |	    |	     box, tab (|); c | c | c |	.   T{	Integer |
       |	    |	     value					|
       |	    |							|
       |	    |			SQL constant			|
       |	    |							|
       |	    |			 Description			|
       |	    |							|
       +------------+---------------------------------------------------+
       |     0	    |							|
       |	    |							|
       |	    |		      SQL_SCOPE_CURROW			|
       |	    |							|
       |	    | Row  identifier is valid only while the cursor is |
       |	    | positioned on the row.				|
       |	    |							|
       |     1	    |							|
       |	    |							|
       |	    |		    SQL_SCOPE_TRANSACTION		|
       |	    |							|
       |	    | Row identifier is valid for the duration	of  the |
       |	    | transaction.					|
       |	    |							|
       |     2	    |							|
       |	    |							|
       |	    |		      SQL_SCOPE_SESSION 		|
       |	    |							|
       |	    | Row  identifier  is valid for the duration of the |
       |	    | connection.					|
       |	    |							|
       +------------+---------------------------------------------------+
       T} T{ COLUMN_NAME

       T} |T{ Name of the unique column.

       T} T{ DATA_TYPE

       T} |T{ SQL data type for the column.

       T} T{ TYPE_NAME

       T} |T{ Character string representation of the SQL data type for the column.

       T} T{ COLUMN_SIZE

       T} |T{ An integer value representing the size of the column.

       T} T{ BUFFER_LENGTH

       T} |T{
	Maximum number of bytes necessary to store data from this column.

       T} T{ DECIMAL_DIGITS

       T} |T{
	The scale of the column, or NULL where scale is not applicable.

       T} T{ NUM_PREC_RADIX

       T} |T{
	An integer value of either 10 (representing an exact numeric data type), 2 (representing an approximate numeric data type), or NULL  (rep-
       resenting a data type for which radix is not applicable).

       T} T{ PSEUDO_COLUMN

       T} |T{ Always returns 1.

       T}

SEE ALSO

       db2_column_privileges(3),  db2_columns(3),  db2_foreign_keys(3), db2_primary_keys(3), db2_procedure_columns(3), db2_procedures(3), db2_sta-
       tistics(3), db2_table_privileges(3), db2_tables(3).

PHP Documentation Group 												    DB2_SPECIAL_COLUMNS(3)
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