StackOverflow2013

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11275530
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2012-06-30T15:58:28.820
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2012-06-30T15:58:28.820
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text
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Okay, you have a foreign key on <code>tbl_products</code> on the column <code>categoryname</code>. This references the column <code>sub_category_id</code> in <code>tbl_sub_categories</code>. This stated relationship implies that you must have the value you're inserting for <code>categoryname</code> (<code>'9'</code>) in the column <code>sub_category_id</code> of the <code>tbl_sub_categories</code>. It obviously does not exist. Should that <code>9</code> really be a string? Without a lot more information it's technically impossible to help you but here goes: There are two possibilities: <h3>Hypothesis 1</h3> You have the column <code>categoryname</code> in <code>tbl_sub_categories</code> and the name you're inserting is directly related to the <code>sub_category_id</code> you're also inserting (<code>51</code>). Solution 1 Remove the column <code>categoryname</code> from <code>tbl_products</code>. There's no need for it to be there in a properly normalised database. Change the foreign key to be a constraint on the column <code>sub_category_id</code> as this is what you seem to be looking up. Solution 2 Change the foreign key to be on both <code>categoryname</code> and <code>sub_category_id</code>. This is to stop you from inserting values that don't match the referencing columns. <h3>Hypothesis 2</h3> You have a separate table called something like <code>tbl_categories</code>. In this case, you need to reference this table not <code>tbl_sub_categories</code> in your foreign key.
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