From f1f67e62cebb4144f0599196263cd93b41fa972e Mon Sep 17 00:00:00 2001 From: Kelly Rauchenberger Date: Mon, 6 Feb 2017 20:58:37 -0500 Subject: Made pronunciation::rhymes join dynamic This involved adding a new type of filter; one that compares (currently only equality and inequality) a field with another field located in an enclosing join context. In the process, it was discovered that simplifying the lemma::forms join field earlier actually made some queries return inaccurate results because the inflection of the form was being ignored and anything in the lemma would be used because of the inner join. Because the existing condition join did not allow for the condition field to be on the from side of the join, two things were done: a condition version of joinThrough was made, and lemma was finally eliminated as a top-level object, replaced instead with a condition join between word and form through lemmas_forms. Queries are also now grouped by the first select field (assumed to be the primary ID) of the top table, in order to eliminate duplicates created by inner joins, so that there is a uniform distribution between results for random queries. Created a database index on pronunciations(rhyme) which decreases query time for rhyming filters. The new database version is backwards-compatible because no data or structure changed. --- generator/schema.sql | 2 ++ 1 file changed, 2 insertions(+) (limited to 'generator') diff --git a/generator/schema.sql b/generator/schema.sql index 2ac658c..c07bf57 100644 --- a/generator/schema.sql +++ b/generator/schema.sql @@ -178,6 +178,8 @@ CREATE TABLE `pronunciations` ( `stress` VARCHAR(64) NOT NULL ); +CREATE INDEX `rhymes_with` ON `pronunciations`(`rhyme`); + CREATE TABLE `forms_pronunciations` ( `form_id` INTEGER NOT NULL, `pronunciation_id` INTEGER NOT NULL -- cgit 1.4.1