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Fix timeouts in source:<url> searches and bookmarklet.

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* Change the source index on posts from `(lower(source) gin_trgm_ops) WHERE source != ''`
  to just `(source gin_trgm_ops)`. The WHERE clause prevented the index
  from being used in source:<url> searches because we didn't specify
  the `source != ''` clause in the search itself. Excluding blank
  sources only saved a marginal amount of space anyway. This fixes
  timeouts in source:<url> searches and in the bookmarklet (since we do
  a source dupe check on the upload page too).

* Also switch from indexing `lower(name)` to `name` on pools and users.
  We don't need to lowercase the column because GIN indexes can be used
  with both LIKE and ILIKE queries.
This commit is contained in:
evazion
2019-09-02 18:53:27 -05:00
parent ffc693ef37
commit 5df3b01ca2
7 changed files with 44 additions and 11 deletions
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4
app/models/application_record.rb
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@@ -18,11 +18,11 @@ class ApplicationRecord < ActiveRecord::Base
end
def where_ilike(attr, value)
where("lower(#{qualified_column_for(attr)}) LIKE ? ESCAPE E'\\\\'", value.mb_chars.downcase.to_escaped_for_sql_like)
where("#{qualified_column_for(attr)} ILIKE ? ESCAPE E'\\\\'", value.mb_chars.to_escaped_for_sql_like)
end
def where_not_ilike(attr, value)
where.not("lower(#{qualified_column_for(attr)}) LIKE ? ESCAPE E'\\\\'", value.mb_chars.downcase.to_escaped_for_sql_like)
where.not("#{qualified_column_for(attr)} ILIKE ? ESCAPE E'\\\\'", value.mb_chars.to_escaped_for_sql_like)
end
# https://www.postgresql.org/docs/current/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP