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2:NAME IS NULL
07/10/28 05:58:02
‰ß‹ŽƒƒO

SQLŽ¿‹^‰ž“šƒXƒŒ ½ÚØÝ¸(db”Â)
SQLŽ¿‹^‰ž“šƒXƒŒ Part 2 ½ÚØÝ¸(db”Â)
y‹A‚Á‚Ä‚«‚½zSQLŽ¿‹^‰ž“šƒXƒŒ ½ÚØÝ¸(db”Â)
y‹A‚Á‚Ä‚«‚½zSQLŽ¿‹^‰ž“šƒXƒŒ 2–â–Ú ½ÚØÝ¸(db”Â)
y‹A‚Á‚Ä‚«‚½zSQLŽ¿‹^‰ž“šƒXƒŒ 3–â–Ú ½ÚØÝ¸(db”Â)
y‹A‚Á‚Ä‚«‚½zSQLŽ¿‹^‰ž“šƒXƒŒ 4–â–Ú ½ÚØÝ¸(db”Â)

3:NAME IS NULL
07/10/28 12:24:13 HNaUJLCG
sqlite3‚Å‚·B
zip(
pubcode INT
,zip5 CHAR(5)
,zip7 CHAR(7)
,pref_k TEXT
,city_k TEXT
,town_k TEXT
,pref_j TEXT
,city_j TEXT
,town_j TEXT
);
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SELECT zip7,pref_j,city_j,town_j FROM zip WHERE 0=0 AND city_j = 'hoge'
LIMIT 5
‚Ý‚½‚¢‚ÈŽ–‚ð‚µ‚Ä‚¢‚é‚̂ł·‚ªA
WHERE 0=0‚̈Ӗ¡‚ª•ª‚©‚è‚Ü‚¹‚ñB
uWHERE‹å‚ÌðŒ‚ÌŠ‚Å0=0‚Æ‚¢‚¤–­‚È‚à‚Ì‚ª“ü‚Á‚Ä‚¢‚Ü‚·‚ªA
ƒRƒŒ‚̓R[ƒfƒBƒ“ƒO‚ðŠÈ—ª‰»‚·‚邽‚߂̬‹Z‚Å‚·B
SQL•¶‚ð“®“I‚É쬂·‚éê‡AðŒŒŸõ‚ª•¡ŽG‚ɂȂÁ‚Ä‚­‚邯WHERE‹å‚ª
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ðŒ‚ð“®“I‚É‘‚â‚·‚½‚Ñ‚ÉA‚»‚Ì’¼‘O‚ÉWHERE‚ð•t‚¯‚é‚©AND‚ð•t‚¯‚é‚©‚ð”»’f‚·‚é•K—v‚ª—L‚è‚Ü‚·B
‚±‚±‚Å‚ÍAWHERE 0=0‚Æ‚¢‚¤ƒ_ƒ~[‚ÌðŒ‚𓪂ɂ‚¯‚鎖‚ÅAŒã‚Í‹@ŠB“I‚ÉAND‚ł‚Ȃ°‚Ηǂ¢‚悤‚É‚µ‚Ä‚¢‚Ü‚·v
‚Æ‚¢‚¤à–¾‚ª—L‚é‚̂ł·‚ªA‚¢‚Ü‚¢‚¿—‰ðo—ˆ‚Ü‚¹‚ñB
‰½‚©‹ï‘Ì—á‚͂Ȃ¢‚Å‚µ‚傤‚©?

4:NAME IS NULL
07/10/28 12:42:13
>>3
½Úˆá‚¢‚È‚ñ‚¾‚ªAÅŒã‚Ì•¶‹å
> Œã‚Í‹@ŠB“I‚ÉAND‚ł‚Ȃ°‚Ηǂ¢‚悤‚É‚µ‚Ä‚¢‚Ü‚·
‚ª‚·‚ׂö‚á‚ËB

‚Ƃ肠‚¦‚¸PHP‚Å‘‚­‚ÆA
$where = "WHERE 0=0 ";
if ($pref) $where += "AND pref_j=$pref ";
if ($city) $where += "AND city_j=$city ";
if ($town) $where += "AND town_j=$town ";
$sql = "SELECT * FROM zip $where LIMIT 5";
‚Á‚Ä‚±‚Æ‚¾‚낤B
‰´‚È‚ç”z—ñ‚É“ü‚ê‚Ä‚¨‚¢‚Ä" AND " ‚ÅJOIN‚·‚邯‚Ç‚ÈB

5:NAME IS NULL
07/10/28 12:46:20
‚¤‚°‚ÁA“°‚Å‚à‚¢‚¢‚ª
if ($pref) $where += "AND pref_j='$pref' ";
if ($city) $where += "AND city_j='$city' ";
if ($town) $where += "AND town_j='$town' ";
' '‚Å‚­‚­‚é‚Ì–Y‚ê‚ÄtB

6:NAME IS NULL
07/10/28 21:59:15
>>4,5
ƒAƒ‹ƒoƒCƒg‚ŕԎ–‚ª’x‚ê‚Ü‚µ‚½B
‚·‚¢‚Ü‚¹‚ñASQL‚ɉ‚ß‚ÄG‚é‚̂ŕs—‰ð‚Å‚·B
‚¦‚Á‚ÆASELECT•¶‚É‚ÍWHERE‹å‚ð“ü‚ê‚È‚¯‚ê‚΂Ȃç‚È‚¢‚¯‚ê‚Ç‚àA
‚±‚Ìê‡WHERE hoge‚ŌŒ肷‚邯Aˆø”‚ɉž‚¶‚½_“î‚ÈSQL•¶‚ð”­s‚·‚é‚Ì‚ª
‚ß‚ñ‚Ç‚­‚³‚¢B
‚»‚±‚ÅAWHERE 0=0‚Æ‚µ‚Ĉø”‚ɉž‚¶‚ÄAND‚ŒljÁ‚µ‚½‚çAƒR[ƒfƒBƒ“ƒO‚ª
Šy‚É‚È‚é‚ÆŒ¾‚¤—‰ð‚Å‚æ‚낵‚¢‚Å‚µ‚傤‚©?

‚¿‚È‚Ý‚É WHERE 0=0‚Á‚Ăǂ¤‚¢‚¤ˆÓ–¡‚È‚ñ‚Å‚µ‚傤‚©?
¡‚܂łÌꇂ¾‚ÆA
WHERE zip7‚Æ‚©WHERE 100‚Æ‚¢‚Á‚½’¼ÚŽw’肵‚©K‚Á‚Ä‚¢‚È‚¢‚Ì‚ÅA
0=0‚̈Ӗ¡‚ª—Ç‚­•ª‚©‚ç‚È‚¢‚Å‚·B

7:NAME IS NULL
07/10/28 22:31:01
>>6
0=0‚Íí‚É^‚ƂȂéƒ_ƒ~[‚ÌðŒB
‚‚¯‚Ä‚à‚‚¯‚È‚­‚Ä‚àSQL‚̈Ӗ¡‚Æ‚µ‚Ă͑S‚­“¯‚¶B
‚È‚ñ‚Å•K—v‚©‚ª•ª‚©‚ç‚È‚¢‚¤‚¿‚͂‚¯‚È‚­‚Ä‚¢‚¢B
ƒvƒƒOƒ‰ƒ€‚ÅSQL‚ðŽ©“®¶¬‚·‚邿‚¤‚ɂȂê‚Î
‚¨‚Ì‚¸‚Æ•ª‚©‚邿‚¤‚É‚È‚é‚æB

8:NAME IS NULL
07/10/28 23:34:47
‚È‚ñ‚Å TRUE ‚¶‚á‚È‚¢‚Ì‚©‰´‚É‚à‚í‚©‚ç‚ñ

9:NAME IS NULL
07/10/29 11:02:14
where TRUE ‚Á‚Ä‘‚­‚Æ‚»‚ñ‚ȃJƒ‰ƒ€‚Í‚Ë[‚Á‚ÄŒ¾‚í‚ê‚é‚©‚炾‚ÈB

10:NAME IS NULL
07/10/29 12:01:11
MySQL‚Öphpmyadmin‚ð‰î‚µ‚ăCƒ“ƒ|[ƒg‚·‚邽‚ß‚ÉA
’¼Ú˜A—‚ÌŽæ‚ê‚È‚¢‰ïŽÐ‚ÉuƒeƒLƒXƒg‚Å‚Ìsqlƒ_ƒ“ƒvv‚ð‚­‚¾‚³‚¢‚Æ‚¢‚Á‚½‚̂ł·‚ªA

GŠÛ‚ÅŠJ‚­‚ƃoƒCƒiƒŠ‚Á‚Û‚¢Š´‚¶‚ª‚·‚éƒf[ƒ^‚ª—ˆ‚Ü‚µ‚½B
TAPE @@@ƒ•¶Žš‰»‚¯„@@@@microsoft SQL server‚Æ1s–Ú‚É‚ ‚é‚̂ł·‚ªA
‚±‚ê‚̓eƒLƒXƒg‚Å‚Ìsqlƒ_ƒ“ƒv‚Ȃ̂łµ‚傤‚©H
Š®‘S‚ȃeƒLƒXƒgƒf[ƒ^‚Å‚ÍAmicrosoft SQL server‚̓GƒNƒXƒ|[ƒg‚Å‚«‚È‚¢‚̂łµ‚傤‚©H


11:NAME IS NULL
07/10/29 20:22:15 BxcL5p6/
a, b, c
-------
1, 0101, 100
1, 0101, 200
2, 0102, 300
2, 0103, 400

‚Æ‚¢‚¤‚悤‚ȃe[ƒuƒ‹‚ª‚ ‚Á‚ÄA

a, count(b), sum(c)
-------------------
1, 1, 300
2, 2, 700

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‚Ü‚¸ group by a ‚ð‚·‚é‚͎̂v‚¢‚‚¢‚½‚̂ł·‚ªAb ‚̈µ‚¢‚É”Y‚ñ‚Å‚¢‚Ü‚·B
postgres ‚È‚ñ‚Å‚·‚ªAƒTƒuƒNƒGƒŠ‚ðŽg‚Á‚Ä“ñ’iŠK‚ň—‚·‚ê‚Î
‚¢‚¯‚é‚Ì‚©‚ȂƂ͎v‚Á‚Ä‚¢‚é‚̂ł·‚ªA‚Å‚«‚ê‚Έꔭ‚ň—‚µ‚½‚¢‚Å‚·B

12:NAME IS NULL
07/10/29 20:29:42
>>11
SELECT a,count(DISTINCT b),sum(c) FROM Table GROUP BY a;

13:NAME IS NULL
07/10/29 20:48:55
>>12
‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·B

DISTINCT‚Á‚ÄAW–ñŠÖ”‚̈ø”‚Ì—“‚É‚à‘‚¯‚é‚ñ‚Å‚·‚ËB‹Á‚«‚Ü‚µ‚½B

14:NAME IS NULL
07/10/29 20:50:59
>>10
ƒXƒŒˆá‚¢BuBCP ‚ŃGƒNƒXƒ|[ƒg‚µ‚Ä‚Ëv‚Á‚Ä—Š‚ßB

Ú‚µ‚­‚ÍASQL Server ‚Ìê—pƒXƒŒ‚ÅB

15:NAME IS NULL
07/10/30 00:14:05
Ž¿–â‚Å‚·‚ªASQL‚ɉ—‚¯‚éA
ƒ{ƒCƒXƒRƒbƒg³‹KŒ`‚ª‚¿‚ñ‚Õ‚ñ‚©‚ñ‚Õ‚ñ‚ʼnð‚è‚Ü‚¹‚ñEEEEB
‚Ì‚ÅA‰ðà‚¨Šè‚¢’v‚µ‚Ü‚·B
‚È‚é‚ׂ­ƒCƒ[ƒW‚ªº‚݈Ղ¢‚悤‚É”äšg‚Ȃǎg‚Á‚đՂ¯‚邯K‚¢‚Å‚·B

‚ ‚ÆA’²‚ׂ½ŒÀ‚è‚Å‚·‚ÆA
”ñƒL[€–Ú‚©‚çŽåƒL[€–Ú‚ð“Á’è‚·‚鎖‚ªo—ˆ‚Ä‚µ‚Ü‚¤iŽåƒL[‚ª”ñƒL[€–Ú‚ÉŠÖ”]‘®‚µ‚Ä‚¢‚éj‚炵‚¢‚̂ł·‚ª
‚Ç‚¤‚µ‚ÄA‚±‚̂悤‚É“Á’è‚Å‚«‚Ă͂¢‚¯‚È‚¢‚̂łµ‚傤‚©H

16:NAME IS NULL
07/10/30 14:00:25 sO7Hyn8f
Ž¿–â‚Å‚·B
ƒŒƒR[ƒh‚ª4‚‚ ‚èAid‚ªƒ†ƒj[ƒN‚Å 1 2 4 6 ‚Æ‚¢‚¤’l‚ª“ü‚Á‚Ä‚¢‚Ü‚·B
‚±‚̃e[ƒuƒ‹‚ɃCƒ“ƒT[ƒg‚µ‚½‚¢‚̂ł·‚ªASELECT MAX(id) ‚ÌŒ‹‰Ê‚É
1‚ð‘«‚µ‚½’l‚ðƒCƒ“ƒT[ƒg‚·‚é•û–@‚¾‚ÆA‚¢‚‚©‚̓I[ƒo[ƒtƒ[‚µ‚Ü‚·B
3‚ŃCƒ“ƒT[ƒg‚µ‚½‚¢‚̂ł·‚ªA3‚𓾂邽‚߂ɂ悢SQL•¶‚Í‚ ‚è‚Ü‚¹‚ñ‚Å‚µ‚傤‚©H

17:NAME IS NULL
07/10/30 15:05:25 LF/fw7ef
access‚ÅInStr‚ðŽg‚Á‚Ă鈗‚ðAPostgres+VB‚ɈÚA‚µ‚悤‚Æ‚µ‚Ä‚¢‚é‚̂ł·‚ªA
InStr‚ÆLike/ILike‚ł͉½‚©ˆá‚¢‚ª‚ ‚é‚̂łµ‚傤‚©B
‚Ƃ肠‚¦‚¸ƒL[ƒ[ƒh‚Ì‘OŒã‚É%‚ð‚‚¯‚ê‚΂¢‚¢‚Æ‚¢‚¤Ž–‚͂킩‚è‚Ü‚µ‚½‚ªA
ƒqƒbƒg‚·‚錔‚É”÷–­‚ȈႢ‚ªo‚邯‚«‚ª‚ ‚邿‚¤‚Å‚·B

‚»‚̈Ⴄ—á‚ð”­Œ©‚Å‚«‚ê‚ÎA‰½‚©‚í‚©‚è‚»‚¤‚Ȃ̂ł·‚ªA
access‘¤‚Æpostgres+VB‘¤‚»‚ꂼ‚ê•t‚«‡‚킹‚é‚É‚µ‚Ä‚àŒ”‚ª‘å‚«‚­‚Ä¢‚Á‚Ä‚¢‚Ü‚·B

18:NAME IS NULL
07/10/30 15:06:27
>>16
‚»‚ê‚ªŽ©‘RƒL[‚ł͂Ȃ¢A‚‚܂èƒVƒXƒeƒ€“à•”‚Å̔ԂµƒVƒXƒeƒ€“à•”‚ÅŽg—p‚·‚éƒL[‚È‚ç‚ÎA
—]Œv‚È‚±‚Æ‚ðl‚¦‚¸‚É‚æ‚è‘å‚«‚ÈŒ^A32bit‚â64bit‚Ì®”‚ðŽg‚¤B
Max+1‚ł͂Ȃ­identity‘®«‚âsequence‚ðŽg‚¤‚Ì‚ªŠî–{B

‚»‚ê‚ªŽ©‘RƒL[‚È‚ç‚ÎA—Ⴆ‚Î1-9999‚̔Ԇ‚ðŒJ‚è•Ô‚µŽg‚¤‚Ȃǃ‹[ƒ‹‚ª‚ ‚éꇂÍA
—Ⴆ‚ÎŽg‚í‚È‚­‚È‚Á‚½”Ô†‚ðŠÇ—‚·‚éƒe[ƒuƒ‹‚ð•ʂɎ‚¿‚Ü‚¸‚»‚ê‚©‚ç”Ô†‚ðŽæ“¾‚·‚é‚È‚ÇA
‚¢‚­‚‚©•û–@‚ª‚ ‚éB
̔Ԃ͈̔͂ªL‚¢‚Ù‚Ç‚»‚ê‚È‚è‚ÌH•v‚ð‚µ‚È‚¯‚ê‚΃pƒtƒH[ƒ}ƒ“ƒX‚𗎂Ƃ·‚±‚ƂɂȂè‚â‚·‚¢B

19:NAME IS NULL
07/10/30 21:38:01
>>16
‚·‚Å‚É1sˆÈãƒf[ƒ^‚ª‚ ‚邱‚Æ‚ª‘O’ñ‚¾‚ªAŬ‚̋󂫔Ԃ͈ȉº‚łƂê‚éB
SELECT min(id)+1 FROM Table AS T1 WHERE NOT EXISTS (SELECT * FROM Table WHERE id=T1.id+1);
‚¾‚¯‚ÇA>>18‚É“¯ˆÓB

20:NAME IS NULL
07/10/31 17:46:13 WwEAVoHF
asp‚Ȃ̂ł·‚ªA
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rs‚ª•‚¶‚Ä‚¢‚é‚©‚Ç‚¤‚â‚Á‚Ä’²‚ׂê‚΂悢‚̂łµ‚傤‚©H

21:NAME IS NULL
07/10/31 17:49:34
>>20
‚·‚êˆá‚¢A‚±‚̕ӂł«‚¢‚Ä‚­‚ê
ADO@DAO@‚È‚ÇÚ‘±•û–@‚ɂ‚¢‚Ä
½ÚØÝ¸(db”Â)l50


22:NAME IS NULL
07/10/31 17:51:23 WwEAVoHF
‚·‚êˆá‚¢‚©‚ð‹³‚¦‚邱‚Æ‚µ‚©‚Å‚«‚È‚¢‚Ì‚©BŽc”OB

23:NAME IS NULL
07/10/31 18:06:36
Ž©ŒÈ‚Á‚½B

24:NAME IS NULL
07/10/31 18:09:34
>>21
‚»‚̃XƒŒ‚ɂ͂à‚Á‚Æ’É‚¢“z‚ª‰½”N‚àZ‚Ý’…‚¢‚Ă邩‚ç‚«[‚‚¯‚È„WwEAVoHF

25:NAME IS NULL
07/11/02 16:01:42 B26ewXs/
Ž¿–â‚Å‚·B

2‚‚̃e[ƒuƒ‹ tbl1 ‚Æ tbl2 ‚ª‚ ‚èASELECT‚·‚éÛ‚É‚±‚Ì2‚Â‚ðŒ‹‡‚³‚¹‚é‚à‚̂Ƃµ‚Ü‚·B
‚±‚̂Ƃ«Žæ“¾‚Å‚«‚éƒtƒB[ƒ‹ƒh–¼‚ÉA•Ê–¼‚ð‚‚¯‚½‚¢‚Æl‚¦‚Ä‚¢‚Ü‚·B

@@tbl1.foo ¨ tbl1_foo
@@tbl1.bar ¨ tbl1_bar
@@tbl2.foo ¨ tbl2_foo
@@tbl2.bar ¨ tbl2_bar

‚Æ‚¢‚¤‚悤‚ÉAƒ†ƒj[ƒN‚ȕʖ¼‚ð‚‚¯‚é‚ɂ͂ǂ¤‚·‚ê‚Ηǂ¢‚Å‚µ‚傤‚©B
‚à‚¿‚ë‚ñA1‚‚¸‚ÂAS‚ðŽg‚¤‚Ì‚ªŠmŽÀ‚ł͂ ‚é‚̂ł·‚ªA•¶Žš—ñ‘€ìŠÖ”‚ňꊇ’uŠ·‚Å‚«‚È‚¢‚©‚È‚ÆB

ƒvƒƒOƒ‰ƒ€‘¤‚Ì“s‡ãA“¯‚¶ƒtƒB[ƒ‹ƒh–¼‚¾‚ƕЕû‚µ‚©Žæ“¾‚Å‚«‚È‚¢‚à‚Ì‚ÅcB


26:NAME IS NULL
07/11/03 06:57:14
XVŒnSQL‚Ì‘‚«•û‚ɂ‚¢‚ÄŽ¿–₳‚¹‚Ä‚­‚¾‚³‚¢B

ˆÈ‰º‚̂悤‚ȃf[ƒ^‚ª‚ ‚邯‚µ‚Ü‚·B
-----------------
id name
-----------------
1 win xp
2 max os x
3 win 95

name‚Ìæ“ª‚ª"win"‚ɂȂÁ‚Ä‚¢‚é‚à‚Ì‚ðwindows‚É’u‚«Š·‚¦‚½‚¢‚Æl‚¦‚Ä‚¨‚èA
Šú‘Ò‚µ‚Ä‚¢‚錋‰Ê‚͈ȉº‚Ì’Ê‚è‚Å‚·B
-----------------
id name
-----------------
1 windows xp
2 max os x
3 windows 95

‚±‚̂悤‚ÈXV‚ðs‚¤SQL‚͂ǂ̂悤‚É‚©‚¯‚΂æ‚낵‚¢‚̂łµ‚傤‚©H
mysql‚ðŽg‚Á‚Ă܂·B

‚æ‚낵‚­‚¨Šè‚¢’v‚µ‚Ü‚·B


27:NAME IS NULL
07/11/03 08:24:08
update TableName set name = 'windows' where name like 'win%'

28:NAME IS NULL
07/11/03 08:26:06
>>26
UPDATE Table SET name=replace(name,'win ','windows ') WHERE name LIKE 'win %';
ˆê‰žŒë”š(windows -> windowsdows)‰ñ”ð‚Ì‚½‚ßwin‚ÌŒã‚ë‚ɃXƒy[ƒX‚ð“ü‚ê‚Ä‚ ‚éB
‚Ü‚ŸA‚±‚ꂾ‚ÆAname‚ª'win win os'‚ƂȂÁ‚Ä‚¢‚½ê‡A'windows windows os'‚Á‚ĂȂÁ‚Ä‚µ‚Ü‚¤B

MySQL‚ʼn”\‚©‚Ç‚¤‚©•s–¾‚¾‚ªA
UPDATE Table SET name='windows' || substring(name FROM 'win #"%#"' FOR '#') WHERE name LIKE 'win %';
POSIX³‹K•\Œ»‚ªŽg‚¦‚é‚È‚ç‚à‚»‚Á‚ÆŠy‚©‚ÈB
UPDATE Table SET name=regexp_replace(name,'^win ','windows ') where name LIKE 'win %';


29:28
07/11/03 08:33:59
‚à‚¤‚¿‚å‚Á‚ÆŠy‚Á‚Û‚¢‚Ì‚ðŽv‚¢‚‚¢‚½B
UPDATE Table SET name='windows '||substring(name,5) WHERE name LIKE 'win %';

30:NAME IS NULL
07/11/03 14:19:49
MySQL4.0‚Å‚·B
ƒe[ƒuƒ‹‚ÌnameƒtƒB[ƒ‹ƒh‚ªˆê•”‚Í
uŽR“c@‘¾˜Yv‚âuŽR“c ‘¾˜Yv‚ƂȂÁ‚Ä‚¨‚èA
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uŽR“c‘¾˜Yv
‚ƂȂÁ‚Ä‚¢‚Ü‚·B

ƒXƒy[ƒX‚𖳂­‚·•ûŒü‚Å“ˆê‚µ‚½‚¢‚̂ł·‚ªA‰º‹LSQL•¶‚Ň‚Á‚Ä‚¢‚é‚Å‚µ‚傤‚©B
”O‚Ì‚½‚߃oƒbƒNƒAƒbƒv‚µ‚Ü‚·‚ªA‚»‚ê‚Å‚àŽ¸”s‚µ‚½‚­‚È‚¢‚Ì‚ÅBBB‚¨Šè‚¢‚µ‚Ü‚·B

UPDATE table SET name=replace( name, ' ', '' )
UPDATE table SET name=replace( name, '@', '' )



31:NAME IS NULL
07/11/04 22:42:08
SQL‚Á‚ÄStructured Query Language‚Ì—ª‚¶‚á‚È‚¢‚ÆWikipedia‚É‘‚¢‚Ä‚ ‚é‚ñ‚Å‚·‚ª
ƒ}ƒW‚Å‚·‚©HISO‚̃TƒCƒg‚É‚»‚¤•`‚¢‚Ä‚ ‚é•¶‘‚È‚¢‚Å‚µ‚傤‚©B

32:NAME IS NULL
07/11/04 22:56:46
>>31
wDatabase Language SQLx
‚Æ‚µ‚©‘‚¢‚Ă˂¥‚æB


33:NAME IS NULL
07/11/04 23:09:38
>>31
‚»‚¤‚©EE

34:NAME IS NULL
07/11/04 23:10:41
~ >>31
¨
>>32
‚Ý‚·‚Á‚½EE

35:NAME IS NULL
07/11/05 15:33:31
Oracle9i‚Å‚ÌSELECT‚ɂ‚¢‚Ä‹³‚¦‚Ä‚­‚¾‚³‚¢B

Œ»Ý‚̃e[ƒuƒ‹“àî•ñF

GROUP_ID„ REG_DATE „ TEL_NO@@@@„ STATUS
-„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ
A001 @@@„ 2007/10/01„ 03-9999-0001„ ENABLED
A001 @@@„ 2007/09/20„ 03-9999-0002„ DISABLED
A001 @@@„ 2007/10/03„ 03-9999-0002„ ENABLED
A001 @@@„ 2007/10/03„ 03-9999-0003„ ENABLED
A001 @@@„ 2007/08/01„ 03-9999-0003„ DISABLED
A001 @@@„ 2007/10/31„ 03-9999-0004„ DISABLED
A001 @@@„ 2007/10/31„ 03-9999-0005„ DISABLED

‚±‚Ì‚¤‚¿TEL_NO‚ªd•¡‚µ‚È‚¢‚悤‚ÉA

GROUP_ID„ REG_DATE „ TEL_NO@@@@„ STATUS
-„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ
A001 @@@„ 2007/10/01„ 03-9999-0001„ ENABLED
A001 @@@„ 2007/10/03„ 03-9999-0002„ ENABLED
A001 @@@„ 2007/10/03„ 03-9999-0003„ ENABLED
A001 @@@„ 2007/10/31„ 03-9999-0004„ DISABLED
A001 @@@„ 2007/10/31„ 03-9999-0005„ DISABLED

‚±‚¤‚È‚é‚æ‚¤‚ÉA

ESTATUS=ENABLED‚Åd•¡–³‚µ‚Ìꇂ͂»‚̂܂ܒŠoB
ESTATUS=DISABLED‚Åd•¡–³‚µ‚Ìꇂ͂»‚̂܂ܒŠoB
ESTATUS=DISABLED‚ÆENABLED‚Ì‘o•û‚ªÝ’肳‚ê‚Äd•¡
@“o˜^‚³‚ê‚Ä‚¢‚éƒf[ƒ^‚ɂ‚¢‚Ä‚ÍA
@STATUS=ENABLED‚Ì‚à‚݂̂̂ðd•¡–³‚µ‚Ŏ擾‚µ‚½‚¢B

‚Æ‚¢‚¤ðŒ‚Åselect‚µ‚½‚¢‚̂ł·‚ªA
‚ǂ̂悤‚É‹Lq‚·‚ê‚Ηǂ¢‚Å‚µ‚傤‚©H
‚æ‚낵‚­‚¨Šè‚¢‚µ‚Ü‚·B


36:NAME IS NULL
07/11/05 19:32:18
>>35
ENABLED“¯ŽmADISABLED“¯Žm‚Åd•¡‚µ‚Ä‚¢‚éꇂÍ
‚Ç‚¤‚¢‚¤ðŒ‚Åd•¡‚ð”rœ‚·‚é‚Ì‚©H

‚È‚ñ‚ƂȂ­
select A.GROUP_ID, A.REG_DATE, A.TEL_NO, A.STATUS
from TableName A
@@@inner join
@@@(select TEL_NO, max(REG_DATE) as MAX_REG_DATE
@@@@from TableName
@@@@group by TEL_NO
@@@) B
@@@on A.TEL_NO = B.TEL_NO
@@@and A.REG_DATE = B.MAX_REG_DATE
;
‚Å‚¢‚¢‚悤‚È‹C‚ª‚·‚邪B

37:35
07/11/06 02:07:29
>>36
‚²‹³Ž¦‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·B
¡A“O–é’†‚Å“ª‚ª‚à‚¤‚낤‚Æ‚µ‚Ä‚¢‚é‚Ì‚ÅA
–¾“úA‚ ‚炽‚ß‚ÄŽŽ‚³‚¹‚Ä‚¢‚½‚¾‚«‚½‚¢‚ÆŽv‚¢‚Ü‚·B
d‚Ëd‚Ë‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·B


38:35
07/11/06 10:18:59
>>36
‚³‚Á‚»‚­ŽŽ‚µ‚Ă݂½‚Æ‚±‚ëA–]‚ñ‚Å‚¢‚½Œ‹‰Ê‚ª“¾‚ç‚ê
Œ©Ž–‚¤‚Ü‚­‚¢‚«‚Ü‚µ‚½(†‹ƒ)
–{“–‚É‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚µ‚½B

JOIN‚ÌŽg‚¢•û‚ð‚æ‚­—‰ð‚µ‚ĂȂ¢‚Ì‚ÅA
‚±‚ê‚©‚çJOIN‚ð•׋­‚µ‚Ă݂܂·B


39:NAME IS NULL
07/11/06 10:19:04 XhrkB73v
1‚‚̃tƒ@ƒCƒ‹‚Émysql‚ÆPostgreSQL‚©‚ç“¯Žž‚ɃAƒNƒZƒX

ƒf[ƒ^ƒx[ƒX‚ÉÚ‘±Žw’è‚ð‘‚«ž‚ñ‚¾ƒtƒ@ƒCƒ‹‚ð—pˆÓ‚·‚éŒ`‚ÅAƒtƒ@ƒCƒ‹‚Í“¯ˆêƒT[ƒo[ã‚Å‚·‚ªAƒZƒLƒ…ƒŠƒeƒŠ‚Ì–Ê‚©‚ç’¼ÚƒvƒƒOƒ‰ƒ€ƒtƒ@ƒCƒ‹‚É‘‚«ž‚Ü‚¸A•ʃfƒBƒŒƒNƒgƒŠ‚ÉÝ’u‚µ“ǂݞ‚Ü‚¹‚Ü‚·B
0S‚ÍLinux‚Å‚·B
‚»‚̓ǂݞ‚݃tƒ@ƒCƒ‹1–‡‚ÉAMySQl‚ÆPostgle‚É“¯ŽžÚ‘±‚³‚¹‚邿‚¤‚ÈÝ’è‚ð‘‚¢‚½ê‡A“¯Žž‚ÉDB‚ð‘€ì‚Å‚«‚é‚̂łµ‚傤‚©B

40:NAME IS NULL
07/11/06 10:39:09
>>39
“ú–{Œê‚ÅOK

‚‚©A‰½‚ð‚µ‚½‚¢‚Ì‚©‘S‚­“ǂݎæ‚ê‚ñ‚æB

>@1‚‚̃tƒ@ƒCƒ‹‚Émysql‚ÆPostgreSQL‚©‚ç“¯Žž‚ɃAƒNƒZƒX
‚P‚‚̃tƒ@ƒCƒ‹‚É‚Q‚‚ÌRDBMS‚©‚çƒAƒNƒZƒX‚·‚é‚ÌH

>@‚»‚̓ǂݞ‚݃tƒ@ƒCƒ‹1–‡‚ÉAMySQl‚ÆPostgle‚É“¯ŽžÚ‘±‚³‚¹‚邿‚¤‚È
‚P‚‚̃XƒNƒŠƒvƒg@or@PG‚©‚ç‚Q‚‚ÌRDBMS‚ÉÚ‘±‚·‚é‚ÌH

ŒãŽÒ‚¾‚Æ‚µ‚ÄA–¾Ž¦“I‚ɕʂÈConnection‚Æ‚©‚ňµ‚¦‚ÎA
ŒÂ•Ê‚ÌDataSource‚Æ‚µ‚Ĉµ‚¤‚ÆŽv‚¤‚ª‚ÈB

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41:NAME IS NULL
07/11/06 10:47:24
‚Ђå‚Á‚Æ‚µ‚ÄAconnection.ini ‚Á‚Ăȃtƒ@ƒCƒ‹‚É
pgsql:server=localhost/dbname=hoge...
musql:server=loclahost/dbanme=hoge...
‚Á‚Ä‘‚¢‚Ä‚¨‚¢‚ÄA‚»‚ê‚ð“ǂݞ‚ñ‚ÅÚ‘±‚µ‚½‚¢‚Á‚Ä‚±‚Æ‚©‚È?
‚»‚è‚áAƒzƒXƒgŒ¾Œê‚ÌŽd—lŽŸ‘悾‚ëB’Pƒ‚ȓǂݞ‚݂Ȃç‚Ü‚¸–â‘è‚È‚¢‚ÆŽv‚¤‚ªB
‚ñ‚ÅA½Úˆá‚¢‚¾‚ÈB

42:NAME IS NULL
07/11/06 10:48:02
musql‚Ítypo....rz

43:NAME IS NULL
07/11/07 00:24:57 jxOaFgZr
>>0S‚ÍLinux‚Å‚·
‚ð‚æ‚­Œ©‚邯”Žš‚̃[ƒ‚Ȃ̂ªƒEƒPƒ‹B
‚©‚ç‚©‚Á‚Ä‚ñ‚Ì‚©HH


44:NAME IS NULL
07/11/08 01:29:29
‰º‚̂悤‚È•\‚©‚ç

date | customer | paper | pen | cable
------------------------------------
2007/11/01 | Mr.AAA | 100 | 200 | 400
2007/11/01 | Mr.BBB | 150 | 300 | 350
2007/11/01 | Mr.CCC@| 500 | 250 | 600



paper,pen,cable‚Ȃǂ̗ñ–¼‚ðæ“ª‚ÉŽ‚Á‚Ä‚«‚Ä
—ñcom_name,price‚ð’ljÁ‚µ‚ÄA
‰º‚̂悤‚È•\‚ðì‚邱‚Æ‚ÍSQL‚Ü‚½‚ÍAPL/SQL‚łł«‚é‚̂łµ‚傤‚©H



com_name | date | customer | price
----------------------------------
paper | 2007/11/01 | Mr.AAA | 100
paper | 2007/11/01 | Mr.BBB | 150
paper | 2007/11/01 | Mr.CCC| 500
pen | 2007/11/01 | Mr.AAA | 200
pen | 2007/11/01 | Mr.BBB | 300
pen | 2007/11/01 | Mr.CCC| 250
cable | 2007/11/01 | Mr.AAA | 400
cable | 2007/11/01 | Mr.BBB | 350
cable | 2007/11/01 | Mr.CCC| 600

ƒJ[ƒ\ƒ‹Žg‚Á‚Ä’†‚͉½‚Æ‚©‚Ȃ邯‚ÇA
ŠÌS‚Ì—¼’[‚ª‚Ç‚¤‚É‚à‚È‚ç‚ñ‚̂ł·B
SQL PL/SQL‚â‚èŽn‚߂ĂPŒŽ’ö“xB
‚±‚̕ӂªŒÀŠE‚Å‚·B

‚ǂȂ½‚©‚¨—Í‚ðEEE


45:NAME IS NULL
07/11/08 04:32:45
>>44
ƒJƒ‰ƒ€‚ªŒˆ‚ߑł¿‚Å‚¢‚¢‚È‚ç‰Â”\

46:NAME IS NULL
07/11/08 05:30:03
ƒJƒ‰ƒ€–¼‚ðƒVƒXƒeƒ€ƒJƒ^ƒƒO‚©‚çŽæ“¾‚µ‚ÄA
PL/SQL‚ÅSQL‘g‚Ý—§‚Ä‚ê‚Ή”\‚©‚ÈB(ƒJƒ‰ƒ€Œˆ‚ߑł¿‚¶‚á‚È‚¢ê‡)
OracleƒXƒŒ‚Å•·‚¢‚½•û‚ª‚¢‚¢‚ñ‚¶‚á‚ËB


47:NAME IS NULL
07/11/08 21:07:22 nXrq+1YJ
‰º‹L‚̃e[ƒuƒ‹‚`‚ƃe[ƒuƒ‹‚a‚©‚çƒe[ƒuƒ‹‚`‚Ìd•¡s‚ð
Œ³‚Ɏ擾‚µ‚½‚¢Œ‹‰Ê‚ð’Šo‚µ‚½‚¢‚̂ł·‚ª‚²‹³Žö‚¨Šè‚¢‚µ‚Ü‚·B

ƒe[ƒuƒ‹‚`
ID1 |ID2 |ID3 |MONEY
-----------------------
010101|020202|030101|1000
010101|020202|030201|2000
010101|020202|030301|3000
010101|020202|030502|4000
010101|030202|040601|5000
010101|030202|040701|6000

ƒe[ƒuƒ‹‚a
ID1 |ID2 |ID3 |NAME
-----------------------
010101|020202|030101|A
010101|020202|030201|B
010101|020202|030301|C
010101|020202|030502|D
010101|030202|040601|E
010101|030202|040701|F

ƒe[ƒuƒ‹‚`‚Ìd•¡s‚𓾂éB
ID1 |ID2 |ID3_1|ID3_2|COUNT
-----------------------------
010101|020202|03 |01 |3
010101|030202|04 |01 |2

ID3_1 ‚Í SUBSTR(ID3,1,2)
ID3_2 ‚Í SUBSTR(ID3,5,2)

Žæ“¾‚µ‚½‚¢Œ‹‰Ê
ID1 |ID2 |ID3 |NAME|MONEY
------------------------------
010101|020202|030303|A |1000
010101|020202|030403|B |2000
010101|020202|030301|C |3000
010101|030202|040601|E |5000
010101|030202|040701|F |6000


48:47
07/11/08 21:08:04 nXrq+1YJ
>>47‚Ì‘±‚«
SELECT A.ID1,A.ID2,A.ID3,B.NAME,A.MONEY
FROM ƒe[ƒuƒ‹‚` ‚`,ƒe[ƒuƒ‹‚a ‚a
WHERE
(A.ID1
,A.ID2
,SUBSTR(A.ID3,1,2)
,SUBSTR(A.ID3,5,2)
) IN
(SELECT
A2.ID1
,A2.ID2
,SUBSTR(A2.ID3,1,2)
,SUBSTR(A2.ID3,5,2)
FROM ƒe[ƒuƒ‹‚` A2
WHERE
A2.ID1
AND A2.ID2
AND SUBSTR(A2.ID3,1,2)
AND SUBSTR(A2.ID3,5,2)
GROUP BY
A2.ID1
,A2.ID2
,SUBSTR(A2.ID3,1,2)
,SUBSTR(A2.ID3,5,2)
HAVING COUNT(*) > 1
)

ã‹L‚̂悤‚ÈSQL‚ð쬂µ‚½‚̂ł·‚ª
ƒe[ƒuƒ‹‚a‚ÆŒ‹‡‚µ‚½Û‚Éd•¡sˆÈŠO‚àŽæ“¾‚µ‚Ä‚µ‚Ü‚¢‚Ü‚·B
’·•¶‚Å\‚µ–ó‚ ‚è‚Ü‚¹‚ñ‚Å‚µ‚½‚ª‚ǂȂ½‚©‚²‹³Žö‚­‚¾‚³‚¢B

49:NAME IS NULL
07/11/08 21:18:11
d•¡s‚ðŽæ‚è‚½‚¢‚Á‚Ă̂͂킩‚Á‚½B

‚Å‚àA‚»‚ê‚Æƒe[ƒuƒ‹B‚ð‚Ç‚¤Œ‹‡‚·‚é‚Ì‚©‚ª
—‰ð‚Å‚«‚ñB

‚Ü‚¸“ú–{Œê‚Å‚«‚¿‚ñ‚Æà–¾‚µ‚Ă݂ê


50:47
07/11/08 22:03:41 nXrq+1YJ
>>49
ƒe[ƒuƒ‹‚a‚ÌŽg—p—p“r‚Æ‚µ‚Ă͖¼ÌŽæ“¾‚ׂ̈Ɏg‚¢‚Ü‚·B
Žæ“¾‚µ‚½‚¢Œ‹‰Ê‚̓e[ƒuƒ‹‚`‚Ìd•¡s‚ÌŒ‹‰Ê‚ðŒ³‚É–¼Ì‚ªˆá‚¤‚à‚Ì‚¾‚¯‚ð
’Šo‚·‚邯‚¢‚¤‚à‚̂ł·B
ƒOƒ‹[ƒv‰»‚µ‚½Œã‚ɃOƒ‹[ƒv‰»‚³‚ꂽŒ‹‰Ê‚̃f[ƒ^‚ÌÚׂð
•\ަ‚·‚é‚̂ł·‚ªA‚»‚ÌۂɃe[ƒuƒ‹‚`‚Ìd•¡s‚Æ‚µ‚Ď擾‚µ‚½Œ‹‰ÊˆÈŠO
‚Ì‚à‚Ì‚ªŽæ“¾‚³‚ê‚Ä‚µ‚Ü‚¤‚̂ł·B

“ú–{Œê‚ª‰ºŽè‚Å•ª‚©‚è‚É‚­‚¢‚ÆŽv‚¢‚Ü‚·‚ª‚·‚¢‚Ü‚¹‚ñB

51:NAME IS NULL
07/11/08 22:06:24
‚í‚©‚è‚É‚­EEE
‰Óð‘‚«‚Å‚¢‚¢‚©‚çðŒ—…—ñ‚µ‚Ă݂ê

52:NAME IS NULL
07/11/08 22:12:33
Žæ“¾‚µ‚½‚¢Œ‹‰Ê
ID1 |ID2 |ID3 |NAME|MONEY
------------------------------
010101|020202|030303|A |1000

‚±‚ÌID3=030303‚Á‚ăf[ƒ^‚͂ǂ±‚©‚ç‚­‚é‚ÌH
ƒe[ƒuƒ‹A‚É‚àB‚É‚à‘¶Ý‚µ‚È‚¢‚ñ‚¾‚¯‚ÇB

53:NAME IS NULL
07/11/08 22:35:30
>>47
uŽæ“¾‚µ‚½‚¢Œ‹‰Êv‚ÍA
ID1 |ID2 |ID3 |NAME|MONEY
------------------------------
010101|020202|030101|A |1000
010101|020202|030201|B |2000
010101|020202|030301|C |3000
010101|030202|040601|E |5000
010101|030202|040701|F |6000
‚̊ԈႢ‚¶‚á‚È‚¢‚Ì‚©Hi1s–Ú‚Æ2s–Ú‚ÌID3j

‚»‚¤‚¾‚Æ‚µ‚½‚çA‚Ù‚Ú>>48‚̂܂Ü
select A.ID1, A.ID2, A.ID3, B.NAME, A.MONEY
from ƒe[ƒuƒ‹‚` A, ƒe[ƒuƒ‹‚a B
where (A.ID1, A.ID2, substr(A.ID3, 1, 2), substr(A.ID3, 5, 2))
@@@in
@@@(select A2.ID1, A2.ID2, substr(A2.ID3, 1, 2), substr(A2.ID3, 5, 2)
@@@@from ƒe[ƒuƒ‹‚` A2
@@@@group by A2.ID1, A2.ID2, substr(A2.ID3, 1, 2), substr(A2.ID3, 5, 2)
@@@@having count(*) > 1
@@@)
and@ A.ID1 = B.ID1
and@ A.ID2 = B.ID2
and@ A.ID3 = B.ID3
‚Å—Ç‚³‚»‚¤‚È‚à‚ñ‚¾‚¯‚ÇB

54:47
07/11/08 22:44:46 nXrq+1YJ
–{“–‚É“ú–{Œê‚ª‰ºŽè‚Å‚·‚¢‚Ü‚¹‚ñB
Eƒe[ƒuƒ‹‚`‚ÌID3‚Ì1,2Œ…–Ú‚Æ5,6Œ…‚ŃOƒ‹[ƒv‰»‚ð‚·‚éB
EƒOƒ‹[ƒv‰»‚µ‚½ID3‚ðŒ³‚Éd•¡‚µ‚Ä‚¢‚閼̂ð’Šo‚·‚éB
E–¼Ì‚ð’Šo‚µ‚½Û‚ɃOƒ‹[ƒv‰»‚µ‚½Œ‹‰ÊˆÈŠO‚ª’Šo‚³‚ê‚Ä‚µ‚Ü‚¤B

Žæ“¾‚µ‚½‚¢Œ‹‰Ê ‚ÍŠÔˆá‚Á‚Ă܂µ‚½B‚·‚¢‚Ü‚¹‚ñB
ˆÈ‰º‚ª–{“–‚̎擾‚µ‚½‚¢Œ‹‰Ê‚Å‚·B
ID1 |ID2 |ID3 |NAME|MONEY
------------------------------
010101|020202|030101|A |1000
010101|020202|030201|B |2000
010101|020202|030301|C |3000
010101|030202|040601|E |5000
010101|030202|040701|F |6000

55:NAME IS NULL
07/11/09 00:22:12
>Eƒe[ƒuƒ‹‚`‚ÌID3‚Ì1,2Œ…–Ú‚Æ5,6Œ…‚ŃOƒ‹[ƒv‰»‚ð‚·‚éB
ID3_1|ID3_2|COUNT
03@@|01@@|3
03@@|02@@|1
04@@|01@@|2

>EƒOƒ‹[ƒv‰»‚µ‚½ID3‚ðŒ³‚Éd•¡‚µ‚Ä‚¢‚閼̂ð’Šo‚·‚éB
ã‚ÌŒ‹‰Ê‚©‚çCOUNT‚ª2ˆÈãid•¡‚ª‚ ‚ésj‚ð’ŠoB
ID3_1|ID3_2|COUNT
03@@|01@@|3
04@@|01@@|2

ƒe[ƒuƒ‹‚`‚ÌID3‚Ì1,2Œ…–Ú‚Æ5,6Œ…‚ªã‚ÌŒ‹‰Ê‚ÌID3_1|ID3_2‚ƈê’v‚·‚és‚ð’ŠoB
ID1 @@|ID2 @@|ID3 @@|MONEY
-----------------------
010101|020202|030101|1000
010101|020202|030201|2000
010101|020202|030301|3000
010101|030202|040601|5000
010101|030202|040701|6000

ƒe[ƒuƒ‹B‚Ƈ‚킹‚éB
ID1 @@|ID2 @@|ID3 @@|NAME|MONEY
------------------------------
010101|020202|030101|A@@@|1000
010101|020202|030201|B@@@|2000
010101|020202|030301|C@@@|3000
010101|030202|040601|E@@@|5000
010101|030202|040701|F@@@|6000

‚Á‚ÄŽ–H>>47

56:NAME IS NULL
07/11/12 00:31:35 tKheOgZe
MySql5.0‚ðŽg—p‚µ‚Ă܂·B

CREATE TABLE test_tbl (
id int(11) NOT NULL auto_increment,
name varchar(255) default NULL,
mydate date NOT NULL,
PRIMARY KEY (id),
);

‚±‚ñ‚ȃe[ƒuƒ‹‚ª‚ ‚è
–ˆ“ú’莞‚ÉSELECT•¶‚ðŽÀs‚µ‚Ä mydate‚©‚ç30“úŒã,60“úŒã,90“úEEEE‚Æ
mydate@‚©‚ç–{“ú‚ª30“úŠÔŠu‚Ìid‚ð‰i‰“‚É’Šo‚µ‚½‚¢‚ñ‚Å‚·‚ªA‚Ç‚¤‚¢‚¤•—‚É‹Lq‚·‚ê‚΂悢‚Å‚µ‚傤‚©H

57:NAME IS NULL
07/11/12 01:13:30
ŽŽ‚µ‚ĂȂ¢‚ªA
select * from test_tbl where mydate<sysdate() and (sysdate()-mydate)%30=0

58:NAME IS NULL
07/11/12 18:49:35 3CGhHvj/
id | date@@@@ | data
--+----------+-----
1 | 2007-11-11 | aaa
2 | 2007-11-11 | bbb
1 | 2007-11-10 | ccc
3 | 2007-11-12 | ddd
3 | 2007-11-11 | eee
4 | 2007-11-10 | fff
1 | 2007-11-12 | ggg

‚±‚̂悤‚ȃe[ƒuƒ‹‚©‚çA‰º‹L‚̂悤‚É

1 | 2007-11-12 | ggg
3 | 2007-11-12 | ddd
2 | 2007-11-11 | bbb
4 | 2007-11-10 | fff

Šeid‚ɑ΂µ‚ÄÅV‚Ì‚PŒ‚¾‚¯’Šo‚·‚éSQL‚Ì‘‚«•û‚ð‹³‚¦‚Ä‚­‚¾‚³‚¢B


59:NAME IS NULL
07/11/12 19:55:42
>>58
>>35-36

60:NAME IS NULL
07/11/12 20:08:04 3CGhHvj/
>>59
ƒTƒuƒNƒGƒŠ[‚Å‚l‚‚˜‚Æ‚Á‚½Œã‚ÉA“¯‚¶ƒe[ƒuƒ‹‚ð“–‚Ä‚é‚̂ł·‚ËB
‚â‚Á‚Ă݂½‚çãŽè‚­‚¢‚«‚Ü‚µ‚½B
—L“ŒäÀ‚¢‚Ü‚µ‚½B

61:NAME IS NULL
07/11/12 22:51:57
SQL‚ɂ‚¢‚ÄŽ¿–₳‚¹‚­‚¾‚³‚¢B

ˆÈ‰º‚Ì“ñ‚‚̃e[ƒuƒ‹‚ª‚ ‚邯‚µ‚Ü‚·B
i1juser_tbl
+---------+-----------+
| user_id | user_name |
+---------+-----------+
| 1 | tarou |
| 2 | jirou |
| 3 | saburou |
+---------+-----------+
i2jquestion_tbl
mysql> select * from question_tbl;
+-------------+---------+--------+
| question_id | user_id | answer |
+-------------+---------+--------+
| 1 | 1 | yes |
| 2 | 1 | yes |
| 3 | 1 | yes |
| 4 | 1 | no |
| 5 | 1 | no |
+-------------+---------+--------+
5 rows in set (0.00 sec)

‚±‚Ì“ñ‚‚̃e[ƒuƒ‹‚©‚çˆÈ‰º‚ÌŒ‹‰Ê‚𓱂«o‚µ‚½‚¢‚Å‚·B
+----------+-----------+--------+-----+
| _user_id | user_name | yes | no |
+----------+-----------+--------+-----+
| 1 | tarou | 3 | 2 |
| 2 | jirou | 0 | 0 |
| 3 | saburou | 0 | 0 |
+----------+-----------+--------+-----+

‚±‚̂悤‚ÈŒ‹‰Ê‚ðì‚éSQL‚͂ǂ̂悤‚ɂȂè‚Ü‚·‚Å‚µ‚傤‚©H
‚æ‚낵‚­‚¨Šè‚¢’v‚µ‚Ü‚·B

62:NAME IS NULL
07/11/12 23:14:33
>>61
ƒqƒ“ƒgFsum(case when answer = 'yes' then 1 else 0 end) as yes

63:>>61
07/11/13 07:54:51
>>61
‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚µ‚½I


64:RrLJfFysqaTB
07/11/13 12:50:19
OxUDeM <a href="URLØÝ¸(kcwofgibzljb.com) [url=URLØÝ¸(oweqzrlrrhxk.com) [link=URLØÝ¸(tturythxblwv.com) URLØÝ¸(jmxakeogmots.com)

65:NAME IS NULL
07/11/14 01:15:06
Oracle‚ð•׋­‚µ‚Ä‚¢‚ÄA‚í‚©‚ç‚È‚¢‚Æ‚±‚낪‚ ‚é‚̂Ŏ¿–₳‚¹‚Ä‚­‚¾‚³‚¢B
ˆÈ‰º‚̂悤‚ȃe[ƒuƒ‹‚ª‚ ‚Á‚½‚Æ‚µ‚Ü‚·B

GROUP_ID„ USER_NO„ SALARY
-„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ
A001 @@@„ @@17040„ 200000
A001 @@@„ @@18302„ 190000
A002 @@@„ @@28321„ 200000
A002 @@@„ @@23434„ 200000
A003 @@@„ @@56787„ 210000
A003 @@@„ @@98908„ 200000
A003 @@@„ @@67589„ 210000

‚±‚̃e[ƒuƒ‹‚©‚ç
GROUP_ID–ˆ‚ÌSALARY‚ÌÅ‘å’l‚ðŽæ“¾‚µ‚½‚¢‚̂ł·‚ªA
‚ ‚킹‚ÄSALARY‚ªÅ‘å’l‚Å‚ ‚éUSER_NO‚àŽæ“¾‚µ‚½‚¢‚̂ł·B

Œ‹‰Ê‚̃Cƒ[ƒW‚Æ‚µ‚Ä‚Í

GROUP_ID„ USER_NO„ SALARY
-„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ
A001 @@@„ @@17040„ 200000
A002 @@@„ @@28321„ 200000
A003 @@@„ @@67589„ 210000

‚ƂȂè‚Ü‚·B

select GROUP_ID, MAX(SALARY)
from TABLE
group by GROUP_ID

‚±‚±‚©‚çæ‚Ç‚Ì‚æ‚¤‚É‹Lq‚µ‚Ă悢‚Ì‚©‚í‚©‚è‚Ü‚¹‚ñB
‹³‚¦‚Ä‚¢‚½‚¾‚¯‚È‚¢‚Å‚µ‚傤‚©H
‚æ‚낵‚­‚¨Šè‚¢‚µ‚Ü‚·B
‚¿‚Ȃ݂ÉSALARY‚ªd•¡‚µ‚½ê‡‚ÍUSER_NO‚ª‘å‚«‚¢•û‚ð•\ަ‚·‚邿‚¤‚É‚µ‚½‚¢‚Å‚·B

66:NAME IS NULL
07/11/14 01:20:21
select 10 as a, 20 as b, (a + b) as c

‚̂悤‚È‚±‚Æ‚ð‚µ‚½‚¢‚̂ł·‚ªA‚Å‚«‚Ü‚·‚Å‚µ‚傤‚©H

mysql‚ð‚‚©‚Á‚Ä‚¨‚è‚Ü‚·B

67:NAME IS NULL
07/11/14 01:23:29
>>65
GROUP_ID ‚Æ SALARY ‚ª‚í‚©‚Á‚Ä‚é‚ñ‚¾‚©‚çA
Œ³‚̃e[ƒuƒ‹‚Æ JOIN ‚·‚ê‚Î OKB


68:NAME IS NULL
07/11/14 01:24:00
>>66
ŽŽ‚µ‚Ă݂ê‚΂¢‚¢‚ñ‚¶‚á‚ËH

69:NAME IS NULL
07/11/14 01:32:41
>>66
MySQL‚¶‚á‚È‚­‚Ä‚à‚Å‚«‚È‚¢‚æB

SELECT *,(a+b)AS c FROM (SELECT 10 AS a,20 AS b ...)@AS T1
‚̂悤‚É‚·‚ê‚Ή±B

70:NAME IS NULL
07/11/14 01:43:11
>>65
‚±‚¤‚â‚é‚ñ‚¾‚æB

select
b.gid,
max(b.uid),
b.salary
from
(select gid, max(salary) as salary from TABLE group by gid) as a
left join
TABLE as b
on a.salary=b.salary
group by gid;


71:>>66
07/11/14 01:47:20
>>69
‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·m(_ _m)


72:ElCkbafdouVDbF
07/11/14 03:04:05
Cdjtp6 <a href="URLØÝ¸(tvhpxzaxcajb.com) [url=URLØÝ¸(jdtlpcftljec.com) [link=URLØÝ¸(mktvrqchpfre.com) URLØÝ¸(xzyfjavesqan.com)

73:fKgpGQOBRC
07/11/14 10:41:27
kXtUWP <a href="URLØÝ¸(zffpjytxvwvv.com) [url=URLØÝ¸(omxffvcxtpus.com) [link=URLØÝ¸(oqvlhfrxmavo.com) URLØÝ¸(xhhqhknnxunq.com)

74:65
07/11/14 11:28:45
>>67,70
‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·I
>>70‚³‚ñ‚ÌSQL‚Í‚¤‚Ü‚­“®‚«‚Ü‚¹‚ñ‚Å‚µ‚½‚ªA
ŽQl‚É‚µ‚Äì‚邱‚Æ‚ª‚Å‚«‚Ü‚µ‚½I


75:GnmKqIiRbSoLHQvXsv
07/11/14 12:30:56
2b1CTd <a href="URLØÝ¸(mocxgyjjwzck.com) [url=URLØÝ¸(xrxwfwfnrejf.com) [link=URLØÝ¸(xzeorzfpjjxb.com) URLØÝ¸(ewlokroibysi.com)

76:NAME IS NULL
07/11/15 01:18:33
Oracle10g‚ÌŽ¿–â‚Å‚·B

TBL1
ID(PK)
----
001
002
003


TBL2
¦ID‚ÍPK‚łȂ¢
ID NAME
---------
001 NAME1
002 NAME2
002 NAME3


ƒe[ƒuƒ‹1‚Æ2‚ðŒ‹‡‚µ‚Ä

ID@ NAME
----------
001@NAME1
002@NAME2
003@NULL

‚Æ‚¢‚Á‚½‹ï‡‚ÉTBL1‚ÌŒ”‚͈ێ‚µ‚Ä
NAME‚ɂ͈ê’v‚µ‚½ID‚Ìæ“ª(‚łȂ­‚Ä‚à‚¢‚¢)‚Ì‚à‚Ì‚ð
ˆø‚Á’£‚Á‚Ä‚«‚½‚¢‚Å‚·B

ŠO•”Œ‹‡‚¾‚Æ

SELECT *
FROM
TBL1, TBL2
WHERE
TBL1.ID = TBL2.ID(*)


ID@ NAME
----------
001@NAME1
002@NAME2
002@NAME3
003@NULL

‚Æ‚¢‚Á‚½‹ï‡‚ÉID:002‚ªƒ_ƒu‚Á‚Ä‚µ‚Ü‚¢‚Ü‚·B
(002‚Í1Œ‚ÅNAME2‚©NAME3‚Ì‚¤‚¿1‚‚¾‚¯•\ަ‚µ‚½‚¢)

‰½‚©‚æ‚¢‰ðŒˆô‚͂Ȃ¢‚Å‚µ‚傤‚©B

77:NAME IS NULL
07/11/15 01:21:33
>>76
Group By ‚µ‚½Œ‹‰Ê‚Æ JOIN ‚·‚ê‚ÎOKB
‚Á‚ÄA‚¿‚å‚Á‚Æ‘O‚ÉŽ—‚½‚悤‚ȗႪ‚ ‚Á‚½‚悤‚ÈEEE

78:NAME IS NULL
07/11/15 01:48:23
>>77
‰ñ“š‚ ‚è‚ª‚Æ‚¤‚²‚´‚¢‚Ü‚·B
‚±‚ñ‚ÈŠ´‚¶‚Å‚µ‚傤‚©B

¡‚͎茳‚Ɋ‹«‚ª‚È‚¢‚̂œ®ìŠm”F‚Å‚«‚Ü‚¹‚ñ‚ª
MAX‚Ɉá˜aŠ´‚ðŠ´‚¶‚Ü‚·B

SELECT *
FROM
TBL1,
(
SELECT MAX(NAME)
FROM
TBL2
GROUP BY
NAME
)TBL2
WHERE
TBL1.ID = TBL2.ID(+)

>‚Á‚ÄA‚¿‚å‚Á‚Æ‘O‚ÉŽ—‚½‚悤‚ȗႪ‚ ‚Á‚½‚悤‚ÈEEE

‚·‚݂܂¹‚ñB‚±‚̃XƒŒ‚Å‚µ‚傤‚©B
‹³‚¦‚Ä‚¢‚½‚¾‚¯‚邯‚ ‚肪‚½‚¢‚Å‚·B
(ƒp‚Á‚ÆŒ©‚ǂꂾ‚©‚í‚©‚ç‚È‚¢)

79:NAME IS NULL
07/11/15 04:14:56
‚½‚Ô‚ñ‘OƒXƒŒ‚ÌÅŒã‚̂₂©‚ÈH

80:NAME IS NULL
07/11/15 07:44:36
‘OƒXƒŒ‚ª‚à‚¤Œ©‚ç‚ê‚È‚¢‚Å‚·B
ƒƒOŽ‚Á‚Ä‚é•ûA“\‚Á‚Ä‚¢‚½‚¾‚¯‚邯‚ ‚肪‚½‚¢‚Å‚·B

81:65
07/11/15 16:45:32
‚·‚¢‚Ü‚¹‚ñA‚à‚¤ˆê“xŽ¿–₳‚¹‚Ä‚­‚¾‚³‚¢B
‘O‚̃e[ƒuƒ‹‚É•t‚¯‘«‚µ‚½ƒe[ƒuƒ‹‚ª‚ ‚邯‚µ‚Ü‚·B
GROUP_ID„ USER_NO„ SALARY „ USER_NAME
-„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ
A001 „ @@17040„ @ 200000„ @@@@@“c’†
A001 „ @@18302„ @ 190000„ @@@@@“cŠ
A002 „ @@28321„ @ 200000„ @@@@@“c’[
A002 „ @@23434„ @ 200000„ @@@@@“cŒ´
A003 „ @@56787„ @ 210000„ @@@@@“cˆä
A003 „ @@98908„ @ 200000„ @@@@@“c–Ø
A003 „ @@67589„ @ 210000„ @@@@@“cŽç

Žæ“¾ðŒ‚Í‘O‚ÌŽ¿–â‚Æ“¯‚¶‚ÅŒ‹‰Ê‚͈ȉº‚ɂȂè‚Ü‚·B
GROUP_ID„ USER_NO„ SALARY „ USER_NAME
-„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ„©„Ÿ„Ÿ„Ÿ
A001 „ @@17040„ @ 200000„ @@@@@“c’†
A002 „ @@28321„ @ 200000„ @@@@@“c’[
A003 „ @@67589„ @ 210000„ @@@@@“cŽç

Ž©•ª‚Åì‚Á‚½SQL‚Í

select T4.*
from T4,
(select T3.GROUP_ID,
MAX(T3.USER_NO) as USER_NO,
select T4.*
from T4,
(select
T2.GROUP_ID,
max(T2.USER_NO)
from (select GROUP_ID,
max(SALARY) as SALARY
from TABLE
group by GROUP_ID) as T1,
TABLE as T2
on T1.SALARY = T2SALARY
group by T2.GROUP_ID) T3
where T4.GROUP_ID = T3.GROUP_ID
and T4.USER_NO = T3.USER_NO

select T4. *
from TABLE T4,
(select T2.GROUP_ID,
max(T2.USER_NO) as USER_NO,
T2.SALALY
from (select GROUP_ID,
max(SALALY) as SALALY
from TABLE
group by GROUP_ID) T1,
TABLE T2
where T1.SALALY = T2.SALALY
and T1.GROUP_ID = T2.GROUP_ID
group by T2.GROUP_ID, T2.SALALY) T3
where T3.GROUP_ID = T4.GROUP_ID
and T3.USER_NO = T4.USER_NO

‚Å‚·B‚à‚¤‚¿‚å‚Á‚ƃXƒ}[ƒg‚É‚©‚¯‚È‚¢‚à‚Ì‚©‚ȂƎv‚Á‚ÄŽ¿–₵‚Ü‚µ‚½B
‚æ‚낵‚­‚¨Šè‚¢‚µ‚Ü‚·B

82:xjQscgvGjNP
07/11/15 17:57:09
Hi! Nice site!

83:QYuScmbNhprG
07/11/15 17:57:58
Hi! Nice site!

84:NAME IS NULL
07/11/15 18:37:40
>>76
select A.ID, B.MAX_NAME
from TBL1 A
@@ left outer join
@@ (select ID, max(NAME) as MAX_NAME
@@@from TBL2
@@@group by ID
@@ ) B
@@ on A.ID = B.ID

>>81
>>35-36

85:NAME IS NULL
07/11/15 20:06:51
>>81
SELECT * FROM
@(SELECT max(user_no) AS user_no FROM Table AS T1
@@WHERE SALARY=(SELECT max(salary) FROM Table WHERE group_id=T1.group_id)
@@GROUP BY group_id) AS T2
LEFT JOIN Table USING(user_no);

ƒXƒ}[ƒg‚©‚Ç‚¤‚©‚Í...?


86:sage
07/11/15 20:16:36 f/zLBRc9
Ž¿–₵‚Ü‚·OOG
‚©‚Ȃ艕à“I‚È‚±‚Æ‚©‚ÆŽv‚¢‚Ü‚·‚ªBBB
IFIX‚È‚é‚à‚Ì‚ðŒ»Ý‰ïŽÐ‚ÅŽg‚Á‚Ă܂µ‚ħŒäŒniFA)‚Ȃ̂ł·‚ª
‚Ü‚Á‚½‚­ŒoŒ±‚ª‚È‚­Aƒf[ƒ^ƒx[ƒX‚È‚é‚à‚Ì‚à‚ ‚܂蔻‚Á‚Ä‚¢‚Ü‚¹‚ñorz
‚à‚µAÚ‚µ‚­”»‚è‚â‚·‚¢ƒTƒCƒg‚âA”—U“±‚Ȃǂª‚ ‚è‚Ü‚µ‚½‚çA‚¨Šè‚¢‚µ‚Ü‚·

”‰˜‚µ”ˆႢ½²Ï¾Ý

87:NAME IS NULL
07/11/15 21:21:59
‚ÅA‰½‚ð’m‚肽‚¢‚ñ‚¾H‚»‚ê‚ð‚Í‚Á‚«‚è‘‚¯‚æ

88:NAME IS NULL
07/11/15 22:41:17 NMabm+GO
LEFT OUTER JOIN ‚ʼnE‘¤‚Ì—ñ‚ÉŒŸõðŒŽw’肵‚½‚çAINNER JOIN@‚Æ
‚¢‚Á‚µ‚å‚Å‚·‚©H

89:86
07/11/15 23:38:43
>>86‚Å‚·
»¹Þн¯ÃϽÀorz
À¸Þ‚ÌŽí—Þ‚ÅPG‚ª‚ ‚Á‚ÄA‚»‚Ì’†‚ÉuADDOUTv‚âuSETMANv‚Ȃǂª‚ ‚é‚̂ł·‚ª
‚»‚ê‚ç‚Ìà–¾AŽg‚¢•ûA‚±‚̂Ƃ«‚Í‚±‚Ì•¶–@H‚Ý‚½‚¢‚Ì‚ª‚í‚©‚ê‚΂Ǝv‚¢‚Ü‚µ‚ÄBBB

‚Ü‚Á‚½‚­Ž‚Á‚ĉ•à“I‚ÈŽ–‚Ž²Ï¾Ý

90:NAME IS NULL
07/11/16 01:06:53
>>89
URLØÝ¸(www.proface.co.jp)
‚±‚ê‚Ì‚±‚Æ‚©‚ÈH‚»‚êŒü‚¯‚̃XƒŒ‚͂Ȃ¢‚¾‚낤‚ÈB
’†‚ÅSQL|SERVER‚ðŽg‚Á‚Ă邿‚¤‚¾‚¯‚Ç’¼Ú‚ÍŠÖŒW‚È‚¢‚ÈB
ƒxƒ“ƒ_[‚̃†[ƒU[‰ï‚Æ‚©‚ ‚é‚ñ‚¶‚á‚ËH
‰c‹Æ‚É’®‚¢‚ÄŒ©‚½‚çB

91:NAME IS NULL
07/11/17 18:57:59
‚·‚¢‚Ü‚¹‚ñBƒ\[ƒg‚ɂ‚¢‚Ä‚¨•·‚«‚µ‚½‚¢‚̂ł·‚ªA

id typeid name
---------------------------------
1 1 aaaa
2 1 bbbb
3 2 cccc
4 2 dddd
5 2 eeee
6 3 ffff

‚Æ‚¢‚¤ƒe[ƒuƒ‹‚ª‚ ‚Á‚½ê‡Atypeid‚ª‘½‚¢i"‘å‚«‚¢"‚ł͂Ȃ¢j‡”ԂɃ\[ƒg‚·‚é•û–@‚Í‚ ‚é‚Å‚µ‚傤‚©H
ã‚̃e[ƒuƒ‹‚Å‚¢‚¦‚ÎA

id typeid name
---------------------------------
3 2 cccc
4 2 dddd
5 2 eeee
1 1 aaaa
2 1 bbbb
6 3 ffff

‚ƂȂÁ‚Ä—~‚µ‚¢‚̂ł·B

¡‚܂łÍtypeid‚Ågroup by‚µ‚Äcount(*)‚Ì”’l‚ðŒ³‚ÉŽèì‹ÆH‚łǂë‚Ç‚ë‚Æƒ\[ƒg‚µ‚Ä‚¢‚½‚̂ł·‚ªA
ŽÀ‚Í‚P‰ñ‚Ìselect‚ÅŠÈ’P‚Éo—ˆ‚é‚ñ‚¶‚á‚È‚¢‚©‚ÆŽv‚Á‚ÄAFXŠæ’£‚Á‚ÄŒ©‚Ü‚µ‚½‚ªorz‚Å‚µ‚½B

‚æ‚낵‚­‚¨Šè‚¢‚µ‚Ü‚·B


92:NAME IS NULL
07/11/17 19:04:25
select
B.cnt
,A.id
,A.typeid
,A.name
from table A,
(
select
count(*) as cnt
,typeid
from table
group by typeid
) b
where A.typeid = A.typeid
order by
B.cnt
,A.id

93:NAME IS NULL
07/11/17 19:11:56
‚¤‚¨[I‚·‚²‚·‚¬‚éI‘‚·‚¬‚éI‹v‚µ‚Ô‚è‚ÉŠ´“®‚µ‚½I
–{“–‚É‚ ‚肪‚Æ‚¤BŽŸ‰ï‚Á‚½‚烃V‚¨‚²‚éƒmƒV



94:msYFQKruZmljezmxU
07/11/18 04:12:25
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07/11/18 04:12:41
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07/11/18 04:13:37
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98:NAME IS NULL
07/11/19 21:41:56
MySQL 4.1.20

table uriage

kaisha int(4),
kyaku int(9),
torihikiYMD date,
oder_number int(5)
kingaku int(9)
taishaku int(1)

‚Æ‚¢‚¤‚Ì‚ª‚ ‚Á‚Ä‹q–ˆ‚É‹àŠz‚ðWŒv‚·‚é‚È‚ç
select kyaku,sum(kingaku) from uriage
group by kyaku;
‚É‚È‚é‚ÆŽv‚¤‚̂ł·‚ªA‚»‚±‚Étaishaku‚ª1‚Ȃ猸ŽZ
9‚È‚ç‰ÁŽZ‚·‚邯‚¢‚¤‚Ì‚ð‚Ç‚¤‚â‚Á‚½‚ç•t‚¯‰Á‚¦‚ç‚ê‚Ü‚·‚©
‹³‚¦‚Ä‚­‚¾‚³‚¢B



99:NAME IS NULL
07/11/19 22:06:14
sum(decode(taisyaku,1,kingaku * -1,9,kingaku))

100:NAME IS NULL
07/11/19 22:08:45
sum(kingaku*(taishaku-5)/4)

101:98
07/11/19 22:17:57
>>100
‰½‚Å4‚ÅŠ„‚é‚Ì‚©‚µ‚΂µl‚¦‚Ü‚µ‚½‚ªA‚È‚é‚قǂł·‚ËB

>>99
‚·‚¢‚Ü‚¹‚ñA–{Œ©‚Ü‚µ‚½‚¯‚ÇAdecode‚Á‚Ä•¡†‰»‚·‚é“z‚Å‚ÍH


102:NAME IS NULL
07/11/19 23:03:01
decodeŠÖ”‚ÍOracle‚¾‚¯‚¾‚ÈB
ˆê‰žcase•¶‚É‘‚«Š·‚¦‰Â”\B
sum(case taisyaku when 1 then kingaku * -1 when 9 then kingaku end)

103:NAME IS NULL
07/11/20 06:36:35
>>102
‚ `AŒÅ—L‚̂₂łµ‚½‚©B‚ ‚肪‚Ƃł·B

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113:NAME IS NULL
07/11/25 04:46:04
MySQL5.0‚È‚ñ‚Å‚·‚ªA
WHERE field LIKE 'hoge%'
‚Æ
WHERE field REGEXP '^hoge'
‚Á‚Ä‘S‚­“¯‚¶ðŒ‚ɂȂéA‚Æl‚¦‚Ă悢‚Å‚µ‚傤‚©H


114:XwnWVoMqtvaefKbr
07/11/27 18:49:38
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115:NAME IS NULL
07/11/27 21:59:57 JprxOidq
ƒXƒgƒAƒhƒvƒƒVƒWƒƒ[“à‚ÅINSERT•ª‚É“úŽž‚ð—˜—p‚µ‚½‚¢‚̂ł·‚ªA\•¶‹³‚¦‚Ä‚­‚¾‚³‚¢

116:NAME IS NULL
07/11/27 22:20:59
>>115
ƒXƒgƒAƒhƒvƒƒVƒWƒƒ‚ÍDBMS‚É‚æ‚Á‚Ä\•¶‚ª‘S‚­ˆá‚¤‚Ì‚Å
DBMS–¼‚ðŽ¦‚³‚È‚¯‚ê‚΂»‚ÌŽ¿–â‚Í–³ˆÓ–¡B

SQL‚ÉŒÀ‚Á‚ÄŒ¾‚Á‚Ä‚àA“ú•tEŽž‚ÉŠÖ‚·‚é\•¶‚Í
DBMS‚É‚æ‚Á‚ĈႤB

‚ ‚ÆA‚â‚肽‚¢‚±‚Æ‚ð‚à‚Á‚Æ‹ï‘Ì“I‚ÉŒ¾‚Á‚½‚Ù‚¤‚ª‚¢‚¢‚©‚ÆB

117:bVukSlOdGjiEKqu
07/11/28 12:10:38
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118:NAME IS NULL
07/11/28 14:21:20 dhNS0GoF
CREATE TABLE DEPENDENT(
DEPEND_ID INTEGER,
DEPEND_NAME VARCHAR(50),
DEPEND_AGE INTEGER,
DEPEND_RELATION VARCHAR(20),
EMP_ID INTEGER,
DEPT_ID INTEGER,

PRIMARY KEY (DEPEND_ID, EMP_ID, DEPT_ID),
FOREIGN KEY (EMP_ID) REFERENCES EMPLOYEE(EMP_ID),
FOREIGN KEY (DEPT_ID) REFERENCES DEPARTMENT(DEPT_ID)
)

‚±‚¢‚‚ðŽÀs‚·‚邯AUnique Primary not found‚ÆŒ¾‚Á‚Ä‚­‚é‚ñ‚Å‚·‚ªA
‰½‚ª‚Ü‚¸‚¢‚̂łµ‚傤‚©H

119:NAME IS NULL
07/11/28 19:18:06
select qid, quest from quest_tbl;
ã‚ÌSQL•¶‚Å‚·‚ׂĂ̎¿–â‚ðŽæ‚èo‚·ÛAƒ†[ƒU‚ª‚±‚ÌŽ¿–â‚É“š‚¦‚Ä‚¢‚é‚©A’²‚ׂ½‚¢‚̂ł·‚ª‰º‚ÌSQL•¶‚𕹂¹‚Ä’²‚ׂ邿‚¤˜AŒ‹‚³‚¹‚é‚ɂ͂ǂ¤‚·‚ê‚΂¢‚¢‚Å‚µ‚傤‚©H
select COUNT(user_tbl) FROM answer_tbl where qid=$qid and title IS NOT NULL;

120:NAME IS NULL
07/11/28 20:42:14
>>119
½ÚØÝ¸(db”Â:78”Ô)

121:NAME IS NULL
07/11/29 01:31:59
>>116
’š”J‚É‚¨Žè”‘½ŽÓ‚Å‚·B
SQLServer2005‚Å‚·BGETDATEŠÖ”‚Å‚¨‚‹‚Å‚·‚ËB
‚à‚Á‚ÆŽ©•ª‚Å’²‚ׂĂ©‚玿–â‚·‚邿‚¤‚É‚µ‚Ü‚·B‚²Žw“E‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·B

122:NAME IS NULL
07/11/29 01:53:38
A_ID „ A_NAME„ 
-----------------------
A001 „ @@A1 „ 
A002 „ @@A2 „ 
A003 „ @@A3 „ 
A004 „ @@A4 „ 

B_ID „ A_ID „  B_NAME
-----------------------------
B001 „ @@A001„ ŽR“c
B002 „ @@A001„ ŽR“c
B003 „ @@A001„ ŽR“c
B004 „ @@A002„ ‚‹´
B005 „ @@A002„ “‡“c
B006 „ @@A002„ ’†‘º
B007 „ @@A003„ ’†‘º
B008 „ @@A004„ ŽR“c

C_ID „ B_NANE „ COUNT
-------------------------------
C001 „ @@ŽR“c „  3
C002 „ @@“c’† „  1
C003 „ @@‚‹´ „  1

‚±‚̂悤‚È3‚‚̃e[ƒuƒ‹‚ðŒ‹‡‚µ‚ÄAC_ID = C001@‚ð’Šo‚µ‚½Û‚É

A_ID „ A_NAME„ B_NAME| C_ID
---------------------------------
A001 „ @@A1 „ ŽR“c „ C001
A004 „ @@A4 „ ŽR“c „ C001

‚ÆAA_ID‚ªd•¡‚µ‚È‚¢‚悤‚ÈSQL‚ÌŒ‹‡‚ªãŽè‚­s‚©‚È‚­‚Ä”Y‚ñ‚Å‚¨‚è‚Ü‚·B

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123:NAME IS NULL
07/11/29 01:54:29
’Ç‹L‚Å\‚µ–ó‚È‚¢‚Å‚·B
Žg—p‚µ‚Ä‚¢‚éƒvƒ‰ƒbƒgƒz[ƒ€‚Ípostgresql‚Å‚µ‚½B

124:NAME IS NULL
07/11/29 02:41:49
>>122
ã‚©‚ç TableA,TableB TableC‚Æ‚µ‚Ä
SELECT * FROM
(SELECT c_id,b_name FROM TableC WHERE c_id='C001') AS T1
JOIN (SELECT a_id,b_name FROM TableB GROUP BY a_id,b_name) AS T2 USING(b_name)
JOIN TableA USING(a_id);

125:NAME IS NULL
07/11/29 02:45:00
‚¢‚Â‚à‘‚«ž‚ñ‚¾Œã‚É‹C‚­...orz
SELECT * FROM TableC
JOIN (SELECT a_id,b_name FROM TableB GROUP BY a_id,b_name) AS T2 USING(b_name)
JOIN TableA USING(a_id)
WHERE c_id='C001';
‚Å‚¢‚¢‚©B(‚±‚̂܂܂¾‚ÆTableC.count‚܂łł邯‚Ç)

126:NAME IS NULL
07/11/29 03:03:57
PostgreSQL 8.2 Žg‚Á‚Ă܂·‚¯‚ÇA•›–â‚¢‡‚킹‚Å 1 Œ‚à‘¶Ý‚µ‚È‚¢Žž‚É 0 ‚ð•Ô‚·‚悤‚É
‚µ‚½‚¢‚ñ‚Å‚·‚ª‚¤‚Ü‚¢‘‚«•û‚͂Ȃ¢‚Å‚µ‚傤‚©?

UPDATE HOGE SET HAGE=(SELECT HAGE FROM FOO WHERE ID=?), ...

127:NAME IS NULL
07/11/29 03:12:55
>>126
SELECT Hoge SET hage=COALESCE((SELECT hage FROM Foo WHERE id=?),0);

128:NAME IS NULL
07/11/29 03:13:38
‚Ü‚½‚â‚Á‚½...orz
UPDATE Hoge SET hage=COALESCE((SELECT hage FROM Foo WHERE id=?),0);

129:NAME IS NULL
07/11/29 03:17:30
>>127
‚ ‚肪‚Æ‚¤‚²‚´‚¢‚Ü‚·I

130:119
07/11/29 12:21:06
>>120
‚ ‚ÁI
‚½‚Ü‚½‚Ü“¯‚¶Ž¿–₵‚Ä‚él‚ª‚¢‚½‚È‚ñ‚ÄII
‚·‚²‚¢Šï‹ö‚Å‚·II

131:122
07/11/29 15:43:22
>>125

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•׋­‚µ‚Ü‚·B

132:FgUIzWJFDelHSJxvY
07/11/29 22:51:54
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133:NAME IS NULL
07/11/30 00:08:38 IiAQc5hj

EDB‚ƃo[ƒWƒ‡ƒ“
MySQL4.0.24 ‚Å‚·

Eƒe[ƒuƒ‹ƒf[ƒ^
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2,‚Û‚¿
3,ƒ^ƒ}

s_id,s_name(ŽÐˆõ—pƒe[ƒuƒ‹Fsyain)
-----------------
1,ŽR“c
2,¬—Ñ
3,ŽO–Ø

t_id[auto_increment],p_id,s_id(’S“–ŽÒƒe[ƒuƒ‹Ftanto)
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1,1,1
2,2,2
3,1,3

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