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Top Forums Shell Programming and Scripting shell script pattern matching Post 302352871 by mirfan on Monday 14th of September 2009 01:02:22 AM
Old 09-14-2009
shell script pattern matching

Thanks for the reply. There is minor misktake in script i already sorted out. Now i have some other problem. which i am saving sql query result in variable. Let say

yahoo=$echo('select yahoo from table | mysql db --skip-column-names')
msn=$echo('select msn from table | mysql db --skip-column-names')

which results

yahoo=NULL
msn=NULL

now i want to compare the results that if yahoo and msn is NULL than don't do anything and if yahoo and msn variables contains email addresses than update another table with those values.

my if condition is not working. Please help me out to sort out this issue.

if [[ -n "$yahoo" && -n "$msn" ]]
then
echo "email found. NOT NULL"
else
echo "email are NULL"
fi

It display result "email are NULL"
while it should display "email found. NOT NULL"
because yahoo & msn both variables contains NULL. Please help me how to compare NULL.
Thanks in advance

~Irfan~
 

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MSSQL_FETCH_FIELD(3)													      MSSQL_FETCH_FIELD(3)

mssql_fetch_field - Get field information

SYNOPSIS
object mssql_fetch_field (resource $result, [int $field_offset = -1]) DESCRIPTION
mssql_fetch_field(3) can be used in order to obtain information about fields in a certain query result. PARAMETERS
o $result - The result resource that is being evaluated. This result comes from a call to mssql_query(3). o $field_offset - The numerical field offset. If the field offset is not specified, the next field that was not yet retrieved by this function is retrieved. The $field_offset starts at 0. RETURN VALUES
Returns an object containing field information. The properties of the object are: o name - column name. if the column is a result of a function, this property is set to computed#N, where #N is a serial number. o column_source - the table from which the column was taken o max_length - maximum length of the column o numeric - 1 if the column is numeric o type - the column type. EXAMPLES
Example #1 mssql_fetch_field(3) example <?php // Connect to MSSQL and select the database mssql_connect('MANGOSQLEXPRESS', 'sa', 'phpfi'); mssql_select_db('php'); // Send a select query to MSSQL $query = mssql_query('SELECT * FROM [php].[dbo].[persons]'); // Construct table echo '<h3>Table structure for 'persons'</h3>'; echo '<table border="1">'; // Table header echo '<thead>'; echo '<tr>'; echo '<td>Field name</td>'; echo '<td>Data type</td>'; echo '<td>Max length</td>'; echo '</tr>'; echo '</thead>'; // Dump all fields echo '<tbody>'; for ($i = 0; $i < mssql_num_fields($query); ++$i) { // Fetch the field information $field = mssql_fetch_field($query, $i); // Print the row echo '<tr>'; echo '<td>' . $field->name . '</td>'; echo '<td>' . strtoupper($field->type) . '</td>'; echo '<td>' . $field->max_length . '</td>'; echo '</tr>'; } echo '</tbody>'; echo '</table>'; // Free the query result mssql_free_result($query); ?> SEE ALSO
mssql_field_seek(3). PHP Documentation Group MSSQL_FETCH_FIELD(3)
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