add src/sql/queries

src/sql/queries/word-count-by-chapter.sql

@@ -0,0 +1,36 @@
+-- | DESCRIPTION
+--
+-- This query counts the number of verses where a given word (or phrase)
+-- appears, and groups the number of verses to their respective chapters.
+--
+-- By default the result set is limited to 5 rows; the rows are ordered
+-- in descending order - with the chapter containing the most verses
+-- shown first.
+--
+-- | EXAMPLE RESULT SET
+--
+--   word   chapter  verses
+--   -----  -------  ------
+--   Moses  20       25
+--   Moses  28       23
+--   Moses  7        22
+--   Moses  26       14
+--   Moses  2        13
+
+SELECT
+  "Moses" AS word,
+  chapters.number AS chapter,
+  COUNT(verses.id) AS verses
+FROM
+  verses
+  INNER JOIN qurans ON qurans.id = verses.quran_id
+  INNER JOIN chapters ON chapters.id = verses.chapter_id
+WHERE
+  qurans.locale = "en"
+  AND verses.content LIKE '%' || word || '%'
+GROUP by
+  chapter
+ORDER BY
+  verses DESC
+LIMIT
+  5;