/** * 数据库in ()切割 * @param data * @return */publicstaticList<List<String>>getSumArrayList(List<String>data){privatestaticfinal IntegerMAX_SEND=999;int size=data.size();int limit=(size+MAX_SEND-1)/MAX_SEND;returnStream.iterate(0,n->n+1).limit(limit).parallel().map(a->data....
privatefinalstaticintIN_CAUSE_LIMIT=1000; privatefinalstaticPatternpattern=Pattern.compile("[(\()\s]+\s+in\s\(+(\?\s,\s){"+(IN_CAUSE_LIMIT -2) +",}+\?\)", Pattern.CASE_INSENSITIVE); @Override publicvoidcustomize(Map<String, Object> hibernateProperties){ hibernateProperties.put("hiber...
* 数据库in ()切割 * @param data * @return */ publicstaticList<List<String>>getSumArrayList(List<String>data) { privatestaticfinalIntegerMAX_SEND=999; intsize=data.size(); intlimit=(size+MAX_SEND-1)/MAX_SEND; returnStream .iterate(0,n->n+1).limit(limit).parallel() .map(a->data....
1、遇到Oracle Not In 无效的问题,原因是Not In里面的子查询结果有空值,需要过滤掉 2、Oracle Limit 1000的问题,自己按照Mybatis Plus的租户拦截器做了修改 1)、重点需要理解下表达树,这个刚好旁边大佬学历高,跟我普及了下二叉树用来做数学公式计算的原理 2)、需要写递归,拆分左右节点类型的,比如Or或And,然后也...
-- we buffer at most 1000 metric points, please configure as per your needs DELETE FROM SHOPPING_ORDER_METRICS_TABLE SOMT WHERE SOMT.ID NOT IN (SELECT ID FROM SHOPPING_ORDER_METRICS_TABLE ORDER BY CREATED_DATE FETCH FIRST 1000 ROWS ONLY); COMMIT; DBMS_OUTPUT.PUT_LINE('compute and buffering...
属性orclsizelimitは、検索で返されるエントリの最大数を制御します。デフォルト値は10000です。この値を非常に大きくすると、サーバーのパフォーマンスに影響が出ます。また、レプリケーション・サーバーが一度に処理できる変更ログの最大数を制限する役割も果します。 『Oracle Fusion Middlew...
diverserendono le nostre idee migliori e i nostri team più forti. È per questo che abbiamo creato un posto di lavoro in cui tutti possono dare il massimo senza barriere. Quando tutti si sentono ascoltati e apprezzati, siamo spinti ad andare oltre ciò che è stato fatto in precede...
resumable_timeout--waittime(inseconds)forRESUMABLE(Default7200)date_cache--size(inentries)ofdate conversioncache(Default1000)no_index_errors--abort load on any indexerrors(DefaultFALSE)partition_memory--direct path partition memory limit to startspilling(kb)(Default0)table--Tableforexpress mode load...
很多时候用 exists 代替 in 是一个好的选择: 代码语言:javascript 复制 select num from a where numin(select num from b) 用下面的语句替换: 代码语言:javascript 复制 select num from a whereexists(select1from b where num=a.num) 6.下面的查询也将导致全表扫描: ...
-L | --limit num : Number of tuples extracted from Oracle and stored in memory before writing, default: 10000. -m | --mysql : Export a MySQL database instead of an Oracle schema. -M | --mssql : Export a Microsoft SQL Server database. -n | --namespace schema : Set the Oracle...