6d51ad33fd
*: Optimize struct memory usage by adjust field order ( #11629 )
2019-08-13 17:20:53 +08:00
d9e02b76dd
expression: remove redundant "errors.Trace()" in "expression" package ( #8609 )
2018-12-07 12:20:31 +08:00
32b1dbd8d5
*: rename "github.com/pkg/errors" to "github.com/pingcap/errors" ( #8136 )
...
We import "github.com/pkg/errors" in the code, and actually put
the "github.com/pingcap/errors" there in the vendor path.
That's a dirty hack, and prevent the introduce of Go module.
2018-11-01 16:09:07 +08:00
f6f03db6dd
expression: fix warning/error info of group_concat() ( #7799 )
2018-10-11 17:01:47 +08:00
b3cda9a7dc
expression: fix comments mistake ( #7713 )
2018-09-17 14:28:14 +08:00
cb03f2bec1
move from juju/errors to pkg/errors ( #7151 )
2018-09-12 15:42:20 +08:00
06021c7cfe
remove types.Row interface ( #7170 )
2018-07-27 13:45:03 +08:00
e3ba021f5a
*: make system variable 'group_concat_max_len' work ( #7080 )
2018-07-26 20:02:56 +08:00
eeb08a9372
less type covert call ( #7102 )
2018-07-19 16:13:49 +08:00
27dc8f3550
expression/agg: add ResetContext() for stream aggregation. ( #6097 )
2018-03-22 13:52:02 +08:00
12c87929b8
*:fix some golint && ineffassign && misspell to improve GoReport Result ( #5867 )
2018-02-23 19:31:05 +08:00
fc6376981d
*: remove GetSessionVars() in expression evaluation ( #5683 )
2018-01-22 11:04:32 +08:00
5bf8972460
aggregation: "group_concat" should not modify the argument during execution ( #5664 )
2018-01-17 22:01:36 +08:00
2550969cae
aggregation, plan: split the presentation and evaluation layers of aggregation functions ( #5635 )
2018-01-15 15:48:03 +08:00
5692f459af
expression: refine the type infer of group_concat ( #5573 )
2018-01-08 16:21:44 +08:00
ecbd60c3ff
*: add arguement StatementContext to Encode functions. ( #5566 )
2018-01-06 17:31:08 +08:00
f8c0aaf0c9
parser, expression: support SEPARATOR in group_concat aggregate function ( #5420 )
2017-12-15 16:36:13 +08:00
8b15cb52b7
*: move StatementContext to its own package. ( #5177 )
2017-11-22 00:11:14 +08:00
62433663e5
util/types: change types path ( #5007 )
...
* util/types: change types path
2017-11-04 10:37:14 -05:00
ed7f68ca9b
*: Add Row interface ( #4859 )
2017-10-23 11:36:28 +08:00
25b5a2ce18
*: Refactor aggregation ( #4605 )
...
Aggregation results were stored in aggregation functions, so one map is created for each function to store different groups’ results, which requires much memory.
The aggregation functions are refactored and are now stateless, and the maps are kept in executor (executor.HashAggExec and mocktikv.aggregateExec) so that only one map is needed to store all the functions’ results, which reduced the memory usage.
2017-09-22 19:41:01 +08:00
2762c44161
*: move aggregate functions to an individual package "aggregation" ( #4549 )
2017-09-18 15:07:35 +08:00
