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Devin Zuczek
22 lines
1.4 KiB
SQL
22 lines
1.4 KiB
SQL
-- Break the two visibility flags out of the invention JSON blob into queryable
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-- generated columns, the same way 0003 did for `IsFeatured`. `IsPublished` and
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-- `HideFromPlayer` are always tested together — every feed, the search/browse list and
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-- the per-room list ask for "published and not hidden" — so they move together.
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-- Generated from src/inventions-db.ts (SCHEMA_DDL) — keep in sync.
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--
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-- SQLite allows ALTER TABLE ADD COLUMN only for VIRTUAL generated columns (a STORED one
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-- would need rewriting existing rows), which is what we want anyway: the value stays
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-- derived from `data`, so nothing can drift out of sync with it. json_extract of a JSON
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-- `true` is 1, so both columns read 1/0 — and NULL for a blob missing the key, which is
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-- neither 1 nor 0 and so fails both filters exactly as the json_extract predicates it
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-- replaces did. This is a rename, not a behaviour change.
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--
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-- No index: both columns are booleans that are overwhelmingly one value (nearly every
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-- invention is published and not hidden), so an index on them would be read past rather
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-- than used. The selective one is idx_invention_featured, added in 0003, which stays.
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ALTER TABLE invention
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ADD COLUMN is_published INTEGER GENERATED ALWAYS AS (json_extract(data, '$.IsPublished')) VIRTUAL;
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ALTER TABLE invention
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ADD COLUMN hide_from_player INTEGER GENERATED ALWAYS AS (json_extract(data, '$.HideFromPlayer')) VIRTUAL;
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