What should be the XQuery for this..
hi
i have this xml file. and
what should be query to select the 'prod_id' where the 'prod_group = food'
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE ROOT (View Source for full doctype...)>
- <ROOT>
- <row>
<field name="prod_sk">1</field>
<field name="prod_id">S101</field>
<field name="prod_desc">Soap 1</field>
<field name="prod_catg">Soap</field>
<field name="prod_group">Detergent</field>
</row>
- <row>
<field name="prod_sk">2</field>
<field name="prod_id">S102</field>
<field name="prod_desc">Soap 2</field>
<field name="prod_catg">Soap</field>
<field name="prod_group">Detergent</field>
</row>
- <row>
<field name="prod_sk">3</field>
<field name="prod_id">M101</field>
<field name="prod_desc">Meat 1</field>
<field name="prod_catg">Meat</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">4</field>
<field name="prod_id">M102</field>
<field name="prod_desc">Meat 2</field>
<field name="prod_catg">Meat</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">5</field>
<field name="prod_id">C101</field>
<field name="prod_desc">Choco 1</field>
<field name="prod_catg">Chocolates</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">6</field>
<field name="prod_id">C102</field>
<field name="prod_desc">Choco 2</field>
<field name="prod_catg">Chocolates</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">7</field>
<field name="prod_id">R101</field>
<field name="prod_desc">Rice 1</field>
<field name="prod_catg">Rice</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">8</field>
<field name="prod_id">R102</field>
<field name="prod_desc">Rice 2</field>
<field name="prod_catg">Rice</field>
<field name="prod_group">Food</field>
</row>
- <row>
<field name="prod_sk">9</field>
<field name="prod_id">PD101</field>
<field name="prod_desc">Powder 1</field>
<field name="prod_catg">Washing Powder</field>
<field name="prod_group">Detergent</field>
</row>
- <row>
<field name="prod_sk">10</field>
<field name="prod_id">PD102</field>
<field name="prod_desc">Powder 2</field>
<field name="prod_catg">Washing Powder</field>
<field name="prod_group">Detergent</field>
</row>
</ROOT>
Cross join?
SQL> select a.country_short_name
2 , b.country_short_name
3 from country_sample a
4 cross
5 join country_sample b
6 where a.country_short_name != b.country_short_name
7 /
COUNTRY_SH COUNTRY_SH
IND PAK
IND ENG
IND AUS
PAK IND
PAK ENG
PAK AUS
ENG IND
ENG PAK
ENG AUS
AUS IND
AUS PAK
AUS ENG
12 rows selected.
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