2 username text NOT NULL UNIQUE,
7 id serial NOT NULL PRIMARY KEY
13 lang text NOT NULL DEFAULT 'en',
14 cat integer REFERENCES word (id),
15 ref integer REFERENCES word (id),
16 prio smallint NOT NULL DEFAULT '1',
18 cover boolean NOT NULL DEFAULT FALSE,
22 created timestamptz DEFAULT now(),
23 creator integer REFERENCES login (id),
25 id serial NOT NULL PRIMARY KEY
28 COMMENT ON COLUMN word.form IS 'preferred textual representation';
29 COMMENT ON COLUMN word.alt IS 'alternate forms with equivalent meaning';
30 COMMENT ON COLUMN word.lang IS 'ISO 639 language code matching wikipedia subdomain';
31 COMMENT ON COLUMN word.cat IS 'hierarchical classification';
32 COMMENT ON COLUMN word.ref IS 'reference to equivalent en translation';
33 COMMENT ON COLUMN word.prio IS 'difficulty level or importance; lower values have precedence';
34 COMMENT ON COLUMN word.grade IS 'ascending hierarchical order, preceding default alphabetical';
35 COMMENT ON COLUMN word.cover IS 'highlight if selected';
36 COMMENT ON COLUMN word.source IS 'URI of downloaded image';
37 COMMENT ON COLUMN word.thumb IS 'ImageMagick convert options to create thumbnail from source image';
38 COMMENT ON COLUMN word.wptitle IS 'reference Wikipedia article';
39 COMMENT ON COLUMN word.updated IS 'last significant change';
40 COMMENT ON COLUMN word.creator IS 'user responsible for initial submit';
42 CREATE OR REPLACE FUNCTION exportform(word) RETURNS text AS $$
44 $1.prio || CASE WHEN $1.cover THEN 'c' ELSE '' END || ':',
45 array_to_string($1.form || $1.alt, '/')
47 $$ LANGUAGE SQL IMMUTABLE;
49 CREATE OR REPLACE VIEW _cat_words AS
50 SELECT exportform(word.*) form, sub.*, word.lang, word.ref
51 FROM word RIGHT JOIN (
52 SELECT cat id, array_agg(exportform(word.*) ORDER BY grade, form) forms
53 FROM word WHERE ref IS NULL GROUP BY cat