root@hadoop-senior hive-0.13.1]$ bin/hive -helpusage: hive -d, --define <key=value> Variable subsitution to apply to hive commands. e.g. -d A=B or --define A=B --database <databasename> Specify the database to use -e <quoted-query-str…
Windows client software,FireDAC supports two SQLite library linking modes: Static linking: the x86 sqlite3_x86.obj or x64 sqlite3_x64.obj client library is statically linked into application. FireDAC provides sqlite3_Xxx.obj v 3.7.15. That is default…
在Oracle数据库中,不是提交越频繁越好.恰恰相反,批量提交可以得到更好的性能.这篇文章给大家简单展示一下在Oracle数据库中逐行提交于批量提交两者之间的性能差别.最后再给出一种可以极大改变性能的方法. 1.创建表t_ref,并初始化880992条数据,用于后面的实验.sec@ora10g> create table t_ref as select * from all_objects; sec@ora10g> insert into t_ref select * from t; 2202…
介绍一下批量提交grid中数据的问题 js文件中的提交方法如下: listeners: { click: function btnClick(button) { var win = button.up('window'); var form = win.down("form"); var loadMarsk = new Ext.LoadMask(win, {//元素.DOM节点或id, { msg: '正在执行,请稍候...', removeMask: true// 完成后移除 });…