annotate tests/blob.ur @ 1394:d328983dc5a6
Allow subqueries to reference aggregate-only columns of free tables; treat non-COUNT aggregate functions as possibly returning NULL
| author |
Adam Chlipala <adam@chlipala.net> |
| date |
Sat, 15 Jan 2011 14:53:13 -0500 |
| parents |
034eeb099564 |
| children |
67ebd30a2283 |
| rev |
line source |
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adamc@737
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1 sequence s
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adamc@740
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2 table t : { Id : int, Nam : option string, Data : blob, Desc : string, Typ : string }
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adamc@737
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3
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adamc@890
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4 fun see id =
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adamc@742
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5 r <- oneRow (SELECT t.Data, t.Typ FROM t WHERE t.Id = {[id]});
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adamc@742
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6 returnBlob r.T.Data (blessMime r.T.Typ)
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adamc@742
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7
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adamc@737
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8 fun save r =
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adamc@739
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9 id <- nextval s;
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adamc@740
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10 dml (INSERT INTO t (Id, Nam, Data, Desc, Typ)
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adamc@740
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11 VALUES ({[id]}, {[fileName r.Data]}, {[fileData r.Data]}, {[r.Desc]}, {[fileMimeType r.Data]}));
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adamc@739
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12 main ()
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adamc@737
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13
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adamc@742
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14 and main () =
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adamc@746
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15 ls <- queryX (SELECT t.Id, t.Desc, octet_length(t.Data) AS Len FROM t ORDER BY t.Desc)
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adamc@890
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16 (fn r => <xml><li><a link={see r.T.Id}>{[r.T.Desc]} ({[r.Len]})</a></li></xml>);
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adamc@742
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17 return <xml><body>
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adamc@742
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18 {ls}
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adamc@742
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19
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adamc@742
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20 <br/>
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adamc@742
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21
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adamc@742
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22 <form>
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adamc@742
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23 <textbox{#Desc}/>
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adamc@742
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24 <upload{#Data}/>
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adamc@742
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25 <submit action={save}/>
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adamc@742
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26 </form>
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adamc@742
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27 </body></xml>
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