sequential - Sequentially number rows by keyed group in SQL? -

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Is there a way to add a key number in the SQL key group ?

Arbitrary (code, NAME) Suppose a table with tuples Example table: 

  Code name ---- ---- A Apple a Angel A Arizona B Bravo C. Charlie C Cat de Dog de Doppler D Data D Below   
 The desired projection to use CODE as grouping attribute:  
  code C_NO NAME -------- ---- A1 Apple A1 Angel A2 Arizona B B Bravo C 1 Charlie C. Cat D. Dog D1 Data D2 Down D3 Doppler   
 thanks  
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  •     Li> 
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     MySQL does not do AFAIK. The most included in the base.  
      Selection code, ROW_NUMBER () (name by order by order) - 1 as C_NO, name from MyTable   < / Div>

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