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  _____    _    _     _____     _____    _    _   
 / ____|| | || | ||  /  ___||  |  ___|| | || | || 
/ //---`' | || | || | // __    | ||__   | || | || 
\ \\___   | \\_/ || | \\_\ ||  | ||__   | \\_/ || 
 \_____||  \____//   \____//   |_____||  \____//  
  `----`    `---`     `---`    `-----`    `---`

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Text this: Query transformation for exact cardinality computing