c098178f7a
[Index] Implements create drop show index syntax for bitmap index [ #2487 ] ( #2573 )
...
### create table with index
```
CREATE TABLE table1
(
siteid INT DEFAULT '10',
citycode SMALLINT,
username VARCHAR(32) DEFAULT '',
pv BIGINT SUM DEFAULT '0',
INDEX index_name [USING BITMAP] (siteid, citycode) COMMENT 'balabala'
)
AGGREGATE KEY(siteid, citycode, username)
DISTRIBUTED BY HASH(siteid) BUCKETS 10
PROPERTIES("replication_num" = "1");
```
### create index
```
CREATE INDEX index_name ON table1 (siteid, citycod) [USING BITMAP] COMMENT 'balabala';
or
ALTER TABLE table1 ADD INDEX index_name [USING BITMAP] (siteid, citycod) COMMENT 'balabala';
```
### drop index
```
DROP INDEX index_name ON table1;
or
ALTER TABLE table1 DROP INDEX index_name
```
### show index
```
SHOW INDEX[ES] FROM table1
```
output
```
+---------+-------------+-----------------+------------+---------+
| Table | Index_name | Column_name | Index_type | Comment |
+---------+-------------+-----------------+------------+---------+
| table1 | index_name | siteid,citycode | BITMAMP | balabala|
+---------+-------------+-----------------+------------+---------+
```
2020-01-03 17:41:26 +08:00
f7032b07f3
Support more schema change from VARCHAR type ( #2501 )
2019-12-26 22:38:53 +08:00
c81b1db406
Support convert VARCHAR type to DATE type ( #2489 )
2019-12-18 12:58:47 +08:00
89003b774b
Support Convert Varchar to INT ( #2481 )
2019-12-17 22:02:28 +08:00
5951a0eaea
Add more schema change docs ( #2411 )
...
Add explanation about converting:
DATE -> DATETIME
DATETIME -> DATE
INT->DATE
2019-12-10 16:46:41 +08:00
6759e83a07
Add license header for md files and fix some translation's error ( #2137 )
2019-11-06 21:35:07 +08:00
41e55cfca9
Modify fixed partition feature ( #1989 )
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1. Not support MAVALUE in multi partition column.
2. Fix the incorrect show create table stmt.
2019-10-16 16:03:46 +08:00
ccc236484b
Fix bug that failed to add KEY column to DUPLICATE KEY table ( #1973 )
2019-10-14 16:40:34 +08:00
e70e48c01e
Add a ALTER operation to change distribution type from RANDOM to HASH ( #1823 )
...
Random distribution is no longer supported since version 0.9.
And we need a way to convert the random distribution to hash distribution.
ALTER TABLE db.tbl SET ("distribution_type" = "hash");
2019-09-18 14:16:26 +08:00
326d765c64
Add doc of modify replication num upon partition ( #1611 )
2019-08-08 16:47:32 +08:00
4c2a3d6da4
Merge Help document to documentation ( #1586 )
...
Help document collation (integration of help and documentation documents)
2019-08-07 21:31:53 +08:00
