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StoneDB is an Open-Source MySQL HTAP and MySQL-Native DataBase for OLTP, Real-Time Analytics, a counterpart of MySQLHeatWave. (https://stonedb.io)
### Abstract: The current column storage engine does not support custom functions. Previously, it used the Mysql/SQL layer to parse custom functions. But this led to a series of data...
**Is your feature request related to a problem? Please describe.** Resole warning msg during compile stage. ``` warning: ‘int stonedb::compress::LZ4_compress_forceExtDict(stonedb::compress::LZ4_stream_t*, const char*, char*, int)’ defined but not used [-Wunused-function] int...
- 1 Why do we use seconardy engine? - 2 Why do we employ an in-memory column-based engine? - 3 Overview of In-memory column-based engine, Tianmu - 3.1 MySQL Buffer...
**Is your feature request related to a problem? Please describe.** Now StoneDB has already support with mysql 5.6 and 5.7, it's time to do support on `MySQL 8.0`. This will...
### Describe the problem ### SQL ```sql SELECT sale.usid AS usid, cus.corpname AS corpname, sale.iscenicid AS iscenicid, salde.itickettypeid AS itickettypeid, price.icrowdkindid AS icrowdkindid, salde.mactualsaleprice AS mactualsaleprice, sum(salde.iamount) AS numb, sum(salde.meventmoney)...
This is an implementation draft for execution engine of StoneDB version 2.0. (W.I.P)
This is a MPP design draft for StoneDB version 2.0
### Describe the problem ### After upgrading to the stonedb5.7.101 test version, keep the old data and execute the query ```sql DELIMITER $$ CREATE FUNCTION get_value(id INT) RETURNS INT BEGIN...
### Describe the problem When you use a function on a field, performance is affected.The trace.log displays the message "Unoptimized expression near 'substr'". ``` ###Abnormal mysql> select sum(se) from jrk_all_bak...
### Describe the problem ``` create table t1 (f1 int)engine=tianmu; create table t2 (ff1 int unique, ff2 int default 1)engine=tianmu; insert into t1 values (1),(1),(2); insert into t2(ff1) select f1...
