CREATE TABLE word (
form text NOT NULL,
+ lang text NOT NULL DEFAULT 'eng',
cat integer REFERENCES word (id),
+ ref integer REFERENCES word (id),
+ prio smallint NOT NULL DEFAULT '1',
source text,
thumb text[],
+ wptitle text,
created timestamptz DEFAULT now(),
id serial NOT NULL PRIMARY KEY
);
COMMENT ON COLUMN word.form IS 'preferred textual representation';
+COMMENT ON COLUMN word.lang IS 'ISO 639-3 language code';
COMMENT ON COLUMN word.cat IS 'hierarchical classification';
+COMMENT ON COLUMN word.ref IS 'reference to equivalent eng translation';
+COMMENT ON COLUMN word.prio IS 'difficulty level or importance; lower values have precedence';
COMMENT ON COLUMN word.source IS 'URI of downloaded image';
COMMENT ON COLUMN word.thumb IS 'ImageMagick convert options to create thumbnail from source image';
+COMMENT ON COLUMN word.wptitle IS 'reference Wikipedia article';
+
+CREATE OR REPLACE VIEW _cat_words AS
+ SELECT * FROM word RIGHT JOIN (
+ SELECT cat id, array_agg(form ORDER BY form) forms
+ FROM word WHERE ref IS NULL GROUP BY cat
+ ) sub USING (id);