mysql - SQL: How do I sort on an alias calculated column ADD add a count? -

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I'm new to SQL and it's difficult to get information from my database, maybe some can provide guidance . Students

Columns :: I

Table 

  name, notes, test_1_score, test_2_score, test_3_score, test_4_score, test_5_score, test_6_score, test_7_score, test_8_score , Test_9_score, test_10_score   
 can I get down code to run without points in Group / pseudo am but I must do this without Moreover, I could not get to count work IsNull added  
  Name, Note, yoga (IsNull (test_1_score, 0) + IsNull (test_2_score, 0) + IsNull (test_3_score, 0) + IsNull (test_4_score, 0) + IsNull (test_5_score to, 0) + IsNull (test_6_score, 0) + IsNull (test_7_score, 0) + IsNull (test_8_score, 0) + IsNull (test_9_score, 0) + IsNull (test_10_score, 0)) as points points Gropi points points, Points, notes;   
 Eventually, I want a simple answer to show this: name numerology (# counting of trials has been completed) ?? | A | ?? | Nnotes  
   
 
 
 Try it out:  
  select name, notes, yoga (IsNull (test_1_score, 0) + IsNull (test_2_score, 0) + IsNull (test_3_score, 0) + IsNull (test_4_score, 0) + IsNull (test_5_score, 0) + IsNull (test_6_score, 0) + IsNull (test_7_score, 0) + IsNull (test_8_score, 0) + IsNull (test_9_score, 0) + IsNull (test_10_score, 0)) as the points_achieved, named students order notes points_acheived, 3 group;

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