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Fix broken examples for inverted indexes

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Roman Heinrich 2023-01-30 00:12:32 +01:00 committed by GitHub
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16
docs/en/engines/table-engines/mergetree-family/invertedindexes.md
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@ -49,20 +49,20 @@ where `N` specifies the tokenizer:
Being a type of skipping index, inverted indexes can be dropped or added to a column after table creation:
``` sql
ALTER TABLE tbl DROP INDEX inv_idx;
ALTER TABLE tbl ADD INDEX inv_idx(s) TYPE inverted(2) GRANULARITY 1;
ALTER TABLE tab DROP INDEX inv_idx;
ALTER TABLE tab ADD INDEX inv_idx(s) TYPE inverted(2) GRANULARITY 1;
```
To use the index, no special functions or syntax are required. Typical string search predicates automatically leverage the index. As
examples, consider:
```sql
SELECT * from tab WHERE s == 'Hello World;
SELECT * from tab WHERE s IN (‘Hello’, ‘World’);
SELECT * from tab WHERE s LIKE ‘%Hello%’;
SELECT * from tab WHERE multiSearchAny(s, ‘Hello’, ‘World’);
SELECT * from tab WHERE hasToken(s, ‘Hello’);
SELECT * from tab WHERE multiSearchAll(s, [‘Hello’, ‘World’]);
INSERT INTO tab(key, str) values (1, 'Hello World');
SELECT * from tab WHERE str == 'Hello World';
SELECT * from tab WHERE str IN ('Hello', 'World');
SELECT * from tab WHERE str LIKE '%Hello%';
SELECT * from tab WHERE multiSearchAny(str, ['Hello', 'World']);
SELECT * from tab WHERE hasToken(str, 'Hello');
```
The inverted index also works on columns of type `Array(String)`, `Array(FixedString)`, `Map(String)` and `Map(String)`.