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library.py: search() - fts5 search improvement for keywords shorter t… #452

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merged 1 commit into from May 13, 2024

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chmorgan
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…han 3 unicode characters

FTS5 'match' only evaluates substrings longer than 3 unicode characters, searching for shorter substrings results in no matches being returned.

Fixes an issue where attempting to search for substrings shorter than 3 characters was resulting in empty search results.

Add "AND description LIKE '%SUBSTRING%'" terms for each substring shorter than 3 characters.

@chmorgan
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@whmountains can you give this a shot?

@whmountains
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Thanks for this @chmorgan

I may be doing something wrong, but it's not working for me. When I type in a two-letter query, it continues displaying the results of the previous, longer query.

I added some some logging to find the problem:

2024.04.25 10:09:26 - INFO - search -  evaluating keyword `2k`
2024.04.25 10:09:26 - INFO - search -  using LIKE query for `2k`: `AND description LIKE '%2k%'`
2024.04.25 10:09:26 - INFO - search -  Executing query: SELECT "LCSC Part","MFR.Part","Package","Solder Joint","Library Type","Stock","Manufacturer","Description","Price" FROM parts WHERE parts MATCH ''AND description LIKE '%2k%' AND "Library Type" IN ("Basic") ORDER BY "LCSC Part" COLLATE naturalsort ASC LIMIT 1000
Traceback (most recent call last):
  File "/Users/cw/Documents/KiCad/8.0/scripting/plugins/chmorgan-kicad-tools/partselector.py", line 587, in search
    result = self.parent.library.search(parameters)
  File "/Users/cw/Documents/KiCad/8.0/scripting/plugins/chmorgan-kicad-tools/library.py", line 218, in search
    return cur.execute(query).fetchall()
sqlite3.OperationalError: fts5: syntax error near ""

Something funny is going on when there is nothing to match.: WHERE parts MATCH ''AND

@chmorgan
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chmorgan commented Apr 25, 2024 via email

…han 3 unicode characters

FTS5 'match' only evaluates substrings longer than 3 unicode characters, searching for
shorter substrings results in no matches being returned.

Fixes an issue where attempting to search for substrings shorter than 3 characters was
resulting in empty search results.

Add "AND description LIKE '%SUBSTRING%'" terms for each substring shorter than 3 characters.
@chmorgan
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@whmountains alright, updated and should fix the issue you saw.

@chmorgan
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@whmountains ping on whether this addresses your issues. Would like to get it merged in for quality of life improvements for anyone using the plugin.

@whmountains
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Can confirm this PR now works correctly with searches less than 3 chars.

:shipit:

@chmorgan
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chmorgan commented May 6, 2024

Any updates on this @Bouni ? Would like to get this and the other PR merged for quality of use improvements for present users.

@Bouni
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Bouni commented May 6, 2024

No, I'm on vacation at the moment. Will be back next week

@chmorgan
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chmorgan commented May 6, 2024 via email

@Bouni
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Bouni commented May 13, 2024

LGTM

@Bouni Bouni merged commit 3c5c730 into Bouni:main May 13, 2024
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3 participants