Merge branch 'master' into fix-ann-page

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Dan Roscigno 2023-06-13 11:32:58 -04:00 committed by GitHub
commit 5d1ea9aa18
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3 changed files with 5 additions and 4 deletions

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@ -129,7 +129,9 @@ skip data at the granularity of index blocks.
The `GRANULARITY` parameter determines how many ANN sub-indexes are created. Bigger `GRANULARITY` values mean fewer but larger ANN
sub-indexes, up to the point where a column (or a column's data part) has only a single sub-index. In that case, the sub-index has a
"global" view of all column rows and can directly return all granules of the column (part) with relevant rows (there are at most `LIMIT [N]`-many such granules). In a second step, ClickHouse will load these granules and identify the actually best rows by performing a
"global" view of all column rows and can directly return all granules of the column (part) with relevant rows (there are at most
`LIMIT [N]`-many such granules). In a second step, ClickHouse will load these granules and identify the actually best rows by performing a
brute-force distance calculation over all rows of the granules. With a small `GRANULARITY` value, each of the sub-indexes returns up to
`LIMIT N`-many granules. As a result, more granules need to be loaded and post-filtered. Note that the search accuracy is with both cases
equally good, only the processing performance differs. It is generally recommended to use a large `GRANULARITY` for ANN indexes and fall

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@ -40,7 +40,6 @@
1970-01-20
1970-01-20
2149-06-06
1970-01-02
2023-05-30
2023-05-30
2023-05-30 14:38:20

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@ -54,7 +54,7 @@ select toDateOrDefault(cast(19 as Int256));
select toDateOrDefault(cast(19 as UInt256));
select toDateOrDefault(65535);
select toDateOrDefault(122400);
-- select toDateOrDefault(122400);
select toDateOrDefault(19507, '2000-01-01'::Date);
select toDateOrDefault(-1, '2023-05-30'::Date);
@ -80,4 +80,4 @@ select toDateTimeOrDefault(cast(19 as Int128), 'UTC');
select toDateTimeOrDefault(cast(19 as UInt128), 'UTC');
select toDateTimeOrDefault(cast(19 as Int256), 'UTC');
select toDateTimeOrDefault(cast(19 as UInt256), 'UTC');
select toDateTimeOrDefault(cast(19 as UInt256), 'UTC');