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32 lines
1.4 KiB
SQL
32 lines
1.4 KiB
SQL
-- Index type 'inverted' was renamed to 'full_text' in April 2024.
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-- Such indexes are experimental. Test what happens when ClickHouse encounters tables with the old index type.
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DROP TABLE IF EXISTS tab;
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-- It must be possible to load old tables with 'inverted'-type indexes
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-- In stateless tests, we cannot use old persistences. Emulate "loading an old index" by creating it (internally, similar code executes).
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-- Creation only works with the (old) setting enabled.
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SET allow_experimental_inverted_index = 0;
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CREATE TABLE tab(k UInt64, s String, INDEX idx(s) TYPE inverted(2)) ENGINE = MergeTree() ORDER BY k; -- { serverError ILLEGAL_INDEX }
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SET allow_experimental_inverted_index = 1;
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CREATE TABLE tab(k UInt64, s String, INDEX idx(s) TYPE inverted(2)) ENGINE = MergeTree() ORDER BY k;
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INSERT INTO tab VALUES (1, 'ab') (2, 'bc');
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-- Detach and attach should work.
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DETACH TABLE tab;
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ATTACH TABLE tab;
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-- To encourage users to migrate to the new index type, we now throw an exception when the index is used by queries.
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SELECT * from tab WHERE s = 'bc'; -- { serverError ILLEGAL_INDEX }
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-- The exception recommends to drop the index and create a 'full_text' index instead. Let's try.
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ALTER TABLE tab DROP INDEX idx;
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SET allow_experimental_full_text_index = 1; -- the new setting
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ALTER TABLE tab ADD INDEX idx(s) TYPE full_text(2);
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SELECT * from tab WHERE s = 'bc';
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DROP TABLE tab;
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