SQL UPDATE

The SQL UPDATE Query is used to modify the existing records in a table. You can use WHERE clause with UPDATE query to update selected rows otherwise all the rows would be effected.

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Regenerate thumbnail sizes in wordpress after changing thumbnail sizes

Allows you to regenerate your thumbnails after changing the thumbnail sizes. Regenerate Thumbnails allows you to regenerate the thumbnails for your image attachments. This is very handy if you’ve changed any of your thumbnail dimensions (via Settings -> Media) after previously uploading images or have changed to a theme with different featured post image dimensions.

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