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fix: disable field pruning in last non null mode (#4740)

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* fix: don't prune fields in last non null mode

* test: add sqlness test for field pruning

* test: add flush

* refine implementation

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

---------

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
Co-authored-by: Ruihang Xia <waynestxia@gmail.com>
This commit is contained in:
Yingwen
2024-09-20 08:35:37 +08:00
committed by GitHub
parent f5cf25b0db
commit f02410c39b
3 changed files with 131 additions and 1 deletions
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69
tests/cases/standalone/common/select/prune_field.result Normal file
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@@ -0,0 +1,69 @@
CREATE TABLE IF NOT EXISTS prune_field (
ts TIMESTAMP TIME INDEX,
tag UInt16,
a UInt8,
b UInt8,
PRIMARY KEY (tag)) ENGINE = mito WITH('merge_mode'='last_non_null');
Affected Rows: 0
insert into prune_field(ts, tag, a, b) values(0, 1, 1, null);
Affected Rows: 1
admin flush_table('prune_field');
+----------------------------------+
| ADMIN flush_table('prune_field') |
+----------------------------------+
| 0 |
+----------------------------------+
insert into prune_field(ts, tag, a, b) values(0, 1, null, 1);
Affected Rows: 1
admin flush_table('prune_field');
+----------------------------------+
| ADMIN flush_table('prune_field') |
+----------------------------------+
| 0 |
+----------------------------------+
select * from prune_field where a = 1;
+---------------------+-----+---+---+
| ts | tag | a | b |
+---------------------+-----+---+---+
| 1970-01-01T00:00:00 | 1 | 1 | 1 |
+---------------------+-----+---+---+
select * from prune_field where b = 1;
+---------------------+-----+---+---+
| ts | tag | a | b |
+---------------------+-----+---+---+
| 1970-01-01T00:00:00 | 1 | 1 | 1 |
+---------------------+-----+---+---+
select * from prune_field;
+---------------------+-----+---+---+
| ts | tag | a | b |
+---------------------+-----+---+---+
| 1970-01-01T00:00:00 | 1 | 1 | 1 |
+---------------------+-----+---+---+
select * from prune_field where a = 1 and b = 1;
+---------------------+-----+---+---+
| ts | tag | a | b |
+---------------------+-----+---+---+
| 1970-01-01T00:00:00 | 1 | 1 | 1 |
+---------------------+-----+---+---+
drop table prune_field;
Affected Rows: 0

24
tests/cases/standalone/common/select/prune_field.sql Normal file
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@@ -0,0 +1,24 @@
CREATE TABLE IF NOT EXISTS prune_field (
ts TIMESTAMP TIME INDEX,
tag UInt16,
a UInt8,
b UInt8,
PRIMARY KEY (tag)) ENGINE = mito WITH('merge_mode'='last_non_null');
insert into prune_field(ts, tag, a, b) values(0, 1, 1, null);
admin flush_table('prune_field');
insert into prune_field(ts, tag, a, b) values(0, 1, null, 1);
admin flush_table('prune_field');
select * from prune_field where a = 1;
select * from prune_field where b = 1;
select * from prune_field;
select * from prune_field where a = 1 and b = 1;
drop table prune_field;