/** * 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....
* 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....
我们在用oracle 数据库 查询时,如果where 字句 用in ,那么in里面的内容不能超过1000(可以等于1000)。 但是实际使用时,我们可能查询修改等超过1000条。 那么可以写一个通用的方法进行分割: 1publicstatic<E> List<List<E>> splitList (List<E>targetList,Integer splitSize){2if(targetList ==null)returnnull;...
import org.springframework.context.annotation.Configuration; import java.util.Map; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * description: * when using oracle as data source, custom a sql statement interceptor to solve "select or delete with 'in' " limit 1000 cause...
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){ ...
2019-12-04 15:18 −mysql分页 关键字limit,limit m,n 其中m表示起始位置的下标,下标从0开始。n表示要显示的条数,比如要查询一个表的第2到5条数据。 select * from emp limit 1,4; oracle分页 关键字rownum, rownum表示返回数据的行号。使... ...
into v_rowid limit 1000; <---每次处理1000行，也就是每1000行一提交 exit when v_rowid.count=0; forall i in v_rowid.first..v_rowid.last delete from test where rowid=v_rowid(i); commit; end loop; close mycursor;END;/ ...
Per process system memlock (soft) limit = UNLIMITED Total Shared Global Region in Large Pages = 994 MB (50%) Large Pages used by this instance: 497 (994 MB) Large Pages unused system wide = 3 (6144 KB) Large Pages configured system wide = 500 (1000 MB) ...
/* 取得1000行游标数据并放到对应数组中,每次读取1000条数据 */ FETCH TEMP_CURSOR BULK COLLECT INTO V_INDEX_ID, V_ID_CARD LIMIT 1000; /* 如果没有数据则退出 */ EXIT WHEN TEMP_CURSOR%NOTFOUND; /* 遍历数据 */ FOR I IN V_INDEX_ID.FIRST .. V_INDEX_ID.LAST LOOP ...
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: ...