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| qteck Profil |
#1 · Zasláno: 10. 3. 2015, 00:01:27
ahoj,
co vy na to?? Consider the following MySQL statement: SELECT AccountNumber,Currency,Balance FROM clients JOIN balances ON clients. AccountNumber= balances. AccountNumber WHERE date > “2009-01-01” The query runs slowly, please describe using comments what you would do in attempt to resolve this and then write a more effective query. |
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| tiso Profil |
#2 · Zasláno: 10. 3. 2015, 00:11:08
Nechceš si ten test vyriešiť sám?
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Časová prodleva: 9 let
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