sqLite: join subselect unique without using distinct becouse of performance reasons





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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)
;









share|improve this question

























  • 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




















0















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)
;









share|improve this question

























  • 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
















0












0








0








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)
;









share|improve this question
















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






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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





















  • 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














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