support_functions
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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support_functions [2012/08/25 09:55] daniel |
support_functions [2018/04/20 13:17] daniel Add child_tags |
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| END; | END; | ||
| $$ LANGUAGE plpgsql STABLE STRICT; | $$ LANGUAGE plpgsql STABLE STRICT; | ||
| + | </file> | ||
| + | |||
| + | ====== child_tags(int) ====== | ||
| + | **Return all childs of a tag.** \\ | ||
| + | Takes the ID of a tag or null to designate the root of all tags. Returns | ||
| + | the set of child tags. | ||
| + | |||
| + | <file sql child_tags.sql> | ||
| + | create function child_tags(top_id integer) returns setof integer | ||
| + | as $$ | ||
| + | WITH RECURSIVE tagr(_tag_id) as ( | ||
| + | select tag_id | ||
| + | from tags where parent_id is not distinct from top_id | ||
| + | UNION ALL | ||
| + | select | ||
| + | tag_id | ||
| + | FROM tags JOIN tagr ON tagr._tag_id=tags.parent_id | ||
| + | ) | ||
| + | select _tag_id FROM tagr; | ||
| + | $$ language sql stable | ||
| </file> | </file> | ||
| Line 80: | Line 100: | ||
| CREATE FUNCTION get_header_line(int, text) RETURNS SETOF text | CREATE FUNCTION get_header_line(int, text) RETURNS SETOF text | ||
| AS $$ | AS $$ | ||
| - | SELECT (regexp_matches(lines, E'^'||$2||': (.*?)$', 'gni'))[1] | + | SELECT (regexp_matches(lines, '^'||$2||': (.*?)$', 'gni'))[1] |
| FROM header WHERE mail_id=$1; | FROM header WHERE mail_id=$1; | ||
| $$ LANGUAGE sql; | $$ LANGUAGE sql; | ||
| </file> | </file> | ||
support_functions.txt ยท Last modified: 2018/04/20 13:17 by daniel
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