add 20220919 (#50)

* add 20220919 * add * update README.md * fix date error
CDDSCLab · Jul 5, 2023 · 9be3cc7 · 9be3cc7
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diff --git a/README.md b/README.md
@@ -33,6 +33,7 @@ DSCL weekly group meeting paper list.
 | 2022-07-15 |                 in-memory database for htap                  |                       HTAP, Shared, Isolation                        |         [doc](./meeting-summary/2022-07-15-面向HTAP的内存数据库.md)         |
 | 2022-08-26 |                       Database tuning                        |                  OtterTune，CDBTune，Hunter，QTune                   |           [doc](./meeting-summary/2022-08-26-数据库之智能调参.md)           |
 | 2022-09-09 |                        Open-domain QA                        |                 NLP, Table QA, Information Retrieval                 |            [doc](./meeting-summary/2022-09-09-表格开领域问答.md)            |
+| 2022-09-19 |             Introduction of Query Optimization               |        Logical /Physical Query Optimization, Execution Engine        |            [doc](./meeting-summary/2022-09-19-查询优化概述.md)            |
 | 2022-09-16 |                                                              |                                                              |                                                              |
 | 2022-09-23 |                                                              |                                                              |                                                              |
 | 2022-10-14 |                                                              |                                                              |                                                              |