Format of some docs are incorrect for building the doc website.
* fix a bug that `gensrc` dir can not be built with -j.
* fix ut bug of CreateFunctionTest
This CL implements 3 new operations:
```
ALTER TABLE tbl ADD TEMPORARY PARTITION ...;
ALTER TABLE tbl DROP TEMPORARY PARTITION ...;
ALTER TABLE tbl REPLACE TEMPORARY PARTITION (p1, p2, ...);
```
User manual can be found in document:
`docs/documentation/cn/administrator-guide/alter-table/alter-table-temp-partition.md`
I did not update the grammar manual of `alter-table.md`.
This manual is too confusing and too big, I will reorganize this manual after.
This is the first part to implement the "overwrite load" feature mentioned in issue #2663.
I will implement the "load to temp partition" feature in next PR.
This CL also add GSON serialization method for the following classes (But not used):
```
Partition.java
MaterializedIndex.java
Tablet.java
Replica.java
```
fix a bug when using grouping sets without all column in a grouping set item will produce wrong value.
fix grouping function check will not work in group by clause
Support Grouping Sets, Rollup and Cube to extend group by statement
support GROUPING SETS syntax
```
SELECT a, b, SUM( c ) FROM tab1 GROUP BY GROUPING SETS ( (a, b), (a), (b), ( ) );
```
cube or rollup like
```
SELECT a, b,c, SUM( d ) FROM tab1 GROUP BY ROLLUP|CUBE(a,b,c)
```
[ADD] support grouping functions in expr like grouping(a) + grouping(b) (#2039)
[FIX] fix analyzer error in window function(#2039)
Fixes#2771
Main changes in this CL
* RoaringBitmap is renamed to BitmapValue and moved into bitmap_value.h
* leveraging Roaring64Map to support unsigned BIGINT for BITMAP type
* introduces two new format (SINGLE64 and BITMAP64) for BITMAP type
So far we have three storage format for BITMAP type
```
EMPTY := TypeCode(0x00)
SINGLE32 := TypeCode(0x01), UInt32LittleEndian
BITMAP32 := TypeCode(0x02), RoaringBitmap(defined by https://github.com/RoaringBitmap/RoaringFormatSpec/)
```
In order to support BIGINT element and keep backward compatibility, introduce two new format
```
SINGLE64 := TypeCode(0x03), UInt64LittleEndian
BITMAP64 := TypeCode(0x04), CustomRoaringBitmap64
```
Please note that SINGLE64/BITMAP64 doesn't replace SINGLE32/BITMAP32. Doris will choose the smaller (in terms of space) type automatically during serializing. For example, BITMAP32 is preferred over BITMAP64 when the maximum element is <= UINT32_MAX. This will also make BE rollback possible as long as user didn't write element larger than UINT32_MAX into bitmap column.
Another important design decision is that we fork and maintain our own version of Roaring64Map instead of using the one in "roaring/roaring64map.hh". The reasons are
1. RoaringBitmap doesn't define a standard for the binary format of 64-bits bitmap. As a result, different implementations of Roaring64Map use different format. For example the [C++ version](https://github.com/RoaringBitmap/CRoaring/blob/v0.2.60/cpp/roaring64map.hh#L545) is different from the [Java version](35104c564e/src/main/java/org/roaringbitmap/longlong/Roaring64NavigableMap.java (L1097)). Even for CRoaring, the format may change in future releases. However Doris require the serialized format to be stable across versions. Fork is a safe way to achieve this.
2. We may want to make some code changes to Roaring64Map according to our needs. For example, in order to use the BITMAP32 format when the maximum element can be represented in 32 bits, we may want to access the private member of Roaring64Map. Another example is we want to further customize and optimize the format for BITMAP64 case, such as using vint64 instead of uint64 for map size.
Standardize the return results of INSERT operations,
which is convenient for users to use and locate problems.
More details can be found in insert-into-manual.md
This CL changes:
1. add function bitmap_to_string and bitmap_from_string, which will
convert a bitmap to/from string which contains all bit in bitmap
2. add function murmur_hash3_32, which will compute murmur hash for
input strings
3. make the function cast float to string the same with user result
logic
The problem of inconsistence style in Doris code is too big, it's hard to minimize modification when reformatting code.
So here, our aim is to make the style rules, tune the config in .clang-format.
Note: I choose clang-format-8.0+ to support richer sytle options.
This CL make bitmap_count, bitmap_union, and bitmap_union_count accept any expression whose return type is bitmap as input so that we can support flexible bitmap expression such as bitmap_count(bitmap_and(to_bitmap(1), to_bitmap(2))).
This CL also create separate documentation for each bitmap UDF to conform with other functions.
This commit adds a new statement named alter view, like
ALTER VIEW view_name
(
col_1,
col_2,
col_3,
)
AS SELECT k1, k2, SUM(v1) FROM exampleDb.testTbl GROUP BY k1,k2
