sqLite: join subselect unique without using distinct becouse of performance reasons
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
I have two joints but I do not want the same row again.
that works with select distinct.
but for performance reasons, I wanted to check that soon in the where clause with:
and x.ROWID != w.ROWID
but I get the following error:
[SQLITE_ERROR] SQL error or missing database (no such column: w.ROWID)
Is that possible?
here the complete select:
select distinct substr(w.wordindexed, 1, 55), substr(w.word, 1, 15), w.wordreplacement
from Words w
JOIN (SELECT x.ActionListId, x.wordindexed, x.word, x.wordreplacement
from Words x
where x.word like "%Hallo %"
and x.ROWID != w.ROWID
limit 1)
JOIN (SELECT p.ActionListId, p.wordindexed, p.word, p.wordreplacement
from Words p
where p.word like "%Tool%"
and p.ROWID != x.ROWID
limit 1
)
limit 5;
Example result:
3 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
6 HALLO WELT Hallo Welt ""
9 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
Example insert:
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'STOP CHANGEING LIST|RR||AHK|G_CONFIG["LIST"]["CHANGE"]["STOPREXEXTITLE"]:="."', 'stop changeing list|rr||ahk|g_config["list"]["change"]["stopRexExTitle"]:="."', 7, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, ' DONT CHANGEING LIST|RR||AHK|
', ' dont changeing list|rr||ahk|
', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (6, 'HALLO WELT ', 'Hallo Welt ', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (9, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
the tabke:
create table Words
(
ActionListID INTEGER not null,
wordindexed TEXT not null,
word TEXT not null,
lineNr INTEGER,
count INTEGER,
worddescription TEXT,
wordreplacement TEXT not null,
primary key (ActionListID, word, wordreplacement)
)
;
create index WordIndex
on Words (ActionListID, wordindexed)
;
sqlite
add a comment |
I have two joints but I do not want the same row again.
that works with select distinct.
but for performance reasons, I wanted to check that soon in the where clause with:
and x.ROWID != w.ROWID
but I get the following error:
[SQLITE_ERROR] SQL error or missing database (no such column: w.ROWID)
Is that possible?
here the complete select:
select distinct substr(w.wordindexed, 1, 55), substr(w.word, 1, 15), w.wordreplacement
from Words w
JOIN (SELECT x.ActionListId, x.wordindexed, x.word, x.wordreplacement
from Words x
where x.word like "%Hallo %"
and x.ROWID != w.ROWID
limit 1)
JOIN (SELECT p.ActionListId, p.wordindexed, p.word, p.wordreplacement
from Words p
where p.word like "%Tool%"
and p.ROWID != x.ROWID
limit 1
)
limit 5;
Example result:
3 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
6 HALLO WELT Hallo Welt ""
9 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
Example insert:
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'STOP CHANGEING LIST|RR||AHK|G_CONFIG["LIST"]["CHANGE"]["STOPREXEXTITLE"]:="."', 'stop changeing list|rr||ahk|g_config["list"]["change"]["stopRexExTitle"]:="."', 7, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, ' DONT CHANGEING LIST|RR||AHK|
', ' dont changeing list|rr||ahk|
', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (6, 'HALLO WELT ', 'Hallo Welt ', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (9, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
the tabke:
create table Words
(
ActionListID INTEGER not null,
wordindexed TEXT not null,
word TEXT not null,
lineNr INTEGER,
count INTEGER,
worddescription TEXT,
wordreplacement TEXT not null,
primary key (ActionListID, word, wordreplacement)
)
;
create index WordIndex
on Words (ActionListID, wordindexed)
;
sqlite
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13
add a comment |
I have two joints but I do not want the same row again.
that works with select distinct.
but for performance reasons, I wanted to check that soon in the where clause with:
and x.ROWID != w.ROWID
but I get the following error:
[SQLITE_ERROR] SQL error or missing database (no such column: w.ROWID)
Is that possible?
here the complete select:
select distinct substr(w.wordindexed, 1, 55), substr(w.word, 1, 15), w.wordreplacement
from Words w
JOIN (SELECT x.ActionListId, x.wordindexed, x.word, x.wordreplacement
from Words x
where x.word like "%Hallo %"
and x.ROWID != w.ROWID
limit 1)
JOIN (SELECT p.ActionListId, p.wordindexed, p.word, p.wordreplacement
from Words p
where p.word like "%Tool%"
and p.ROWID != x.ROWID
limit 1
)
limit 5;
Example result:
3 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
6 HALLO WELT Hallo Welt ""
9 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
Example insert:
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'STOP CHANGEING LIST|RR||AHK|G_CONFIG["LIST"]["CHANGE"]["STOPREXEXTITLE"]:="."', 'stop changeing list|rr||ahk|g_config["list"]["change"]["stopRexExTitle"]:="."', 7, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, ' DONT CHANGEING LIST|RR||AHK|
', ' dont changeing list|rr||ahk|
', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (6, 'HALLO WELT ', 'Hallo Welt ', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (9, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
the tabke:
create table Words
(
ActionListID INTEGER not null,
wordindexed TEXT not null,
word TEXT not null,
lineNr INTEGER,
count INTEGER,
worddescription TEXT,
wordreplacement TEXT not null,
primary key (ActionListID, word, wordreplacement)
)
;
create index WordIndex
on Words (ActionListID, wordindexed)
;
sqlite
I have two joints but I do not want the same row again.
that works with select distinct.
but for performance reasons, I wanted to check that soon in the where clause with:
and x.ROWID != w.ROWID
but I get the following error:
[SQLITE_ERROR] SQL error or missing database (no such column: w.ROWID)
Is that possible?
here the complete select:
select distinct substr(w.wordindexed, 1, 55), substr(w.word, 1, 15), w.wordreplacement
from Words w
JOIN (SELECT x.ActionListId, x.wordindexed, x.word, x.wordreplacement
from Words x
where x.word like "%Hallo %"
and x.ROWID != w.ROWID
limit 1)
JOIN (SELECT p.ActionListId, p.wordindexed, p.word, p.wordreplacement
from Words p
where p.word like "%Tool%"
and p.ROWID != x.ROWID
limit 1
)
limit 5;
Example result:
3 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
6 HALLO WELT Hallo Welt ""
9 HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK Hallo von _globalActionLists_global.ahk ""
Example insert:
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, 'STOP CHANGEING LIST|RR||AHK|G_CONFIG["LIST"]["CHANGE"]["STOPREXEXTITLE"]:="."', 'stop changeing list|rr||ahk|g_config["list"]["change"]["stopRexExTitle"]:="."', 7, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (3, ' DONT CHANGEING LIST|RR||AHK|
', ' dont changeing list|rr||ahk|
', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (6, 'HALLO WELT ', 'Hallo Welt ', 9, null, null, '');
INSERT INTO Words (ActionListID, wordindexed, word, lineNr, count, worddescription, wordreplacement) VALUES (9, 'HALLO VON _GLOBALACTIONLISTS_GLOBAL.AHK', 'Hallo von _globalActionLists_global.ahk', 5, null, null, '');
the tabke:
create table Words
(
ActionListID INTEGER not null,
wordindexed TEXT not null,
word TEXT not null,
lineNr INTEGER,
count INTEGER,
worddescription TEXT,
wordreplacement TEXT not null,
primary key (ActionListID, word, wordreplacement)
)
;
create index WordIndex
on Words (ActionListID, wordindexed)
;
sqlite
sqlite
edited Nov 16 '18 at 10:41
SL5net
asked Nov 16 '18 at 10:19
SL5netSL5net
3821416
3821416
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13
add a comment |
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53335776%2fsqlite-join-subselect-unique-without-using-distinct-becouse-of-performance-reas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53335776%2fsqlite-join-subselect-unique-without-using-distinct-becouse-of-performance-reas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Please add example data and expected result. There might be a whole better way to do what you are trying.
– juergen d
Nov 16 '18 at 10:29
I think that's a good workaround: SELECT distinct * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "L%" order by ROWID asc ) t1 UNION ALL SELECT * FROM (SELECT distinct * FROM Words WHERE wordindexed LIKE "%L%" order by ROWID desc ) t2;
– SL5net
Nov 16 '18 at 11:13