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Some Sql addidtions [message #16562] Thu, 26 June 2008 14:56 Go to previous message
unodgs is currently offline  unodgs
Messages: 1367
Registered: November 2005
Location: Poland
Ultimate Contributor

Recently I made possible to write select in select fields list:
SQL * ::Select(
   ID, 
   NAME, 
   ::Select(NAME, AGE).From(PARENTS).Where(KID_ID == ID),
   PHONE
).From(KIDS)

..and conditions
SQL * ::Select(
  X == Y,
  NUMBER < 100,
).From(TABLE)

SqlNvl has now As() method so it's possible to write:
SQL * ::Select(
   (QUANTITY * PRICE).As(FINAL_PRICE)
   (NAME | SURNAME).As(FULL_NAME)
).From(PRICES)

It's also possible to write cases:
SQL * ::Select(
  ID,
  Case(AGE < 5, "Baby")
      (Between(AGE, 5, 10), "Kid")
      ("Young man"),
  NAME
.From(PERSONS)

 
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