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Oracle nvarchar和varchar相互转换、联合查询 - 数据库(内核) - 清泛网 - ...
...换。
Specifying the USING CHAR_CS argument converts text into the database character set. The output datatype is VARCHAR2.
Specifying the USING NCHAR_CS argument converts text into the national character set. The output datatype isNVARCHAR2.
（A表字段c_xxx:varchar，B表c_xxx:nvarchar）
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关于ORA-00903. 表名无效的错误 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...是用双引号中的小写表名创建的，就像下面这样：createtable"mytable"("a"int,"b"varchar2(2));使用这个表（或字段） 可能创建表（或字段）时是用双引号中的小写表名创建的，就像下面这样：
create table "mytable" (a int, "b" varchar2(2));
使...
TokuMX vs. MongoDB 性能对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
TokuMX vs. MongoDB 性能对比TokuDB 的ft tree 用在MongoDB产品TokuMX已经发布。MongoDB 在大量数据（比如1亿条记录）后，插入性能急剧下降。Tokutek数据带索引插入...TokuDB 的ft tree 用在MongoDB产品TokuMX已经发布。MongoDB 在大量数据（比如1亿条...
单页web应用（SPA）的简单介绍 - 更多技术 - 清泛网 - 专注C/C++及内核技术
单页web应用（SPA）的简单介绍单页 Web 应用 (single-page application 简称为 SPA) 是一种特殊的 Web 应用。它将所有的活动局限于一个Web页面中，仅在该Web页 单页 Web 应用 (single-page application 简称为 SPA) 是一种特殊的 Web 应用。它将所有...
Linux automake自动编译全攻略 - 脚本技术 - 清泛IT社区，为创新赋能！
...：
核心配置如下：
configure.in：
AC_INIT([test], [1.0.0], [bugreport.test.com])
#指定项目名称和版本号
AM_INIT_AUTOMAKE(test, 1.0.0)
#检查编译器
AC_PROG_CC
AC_PROG_LIBTOOL
#输出Makefile文件
AC_CONFIG_FILES([
Makefile
&...
nvarchar和varchar相互转换、联合查询 - ORACLE - 清泛IT论坛，有思想、有深度
...换。
Specifying the USING CHAR_CS argument converts text into the database character set. The output datatype is VARCHAR2.
Specifying the USING NCHAR_CS argument converts text into the national character set. The output datatype is NVARCHAR2.
（A表字段c_xxx:varchar，B表c_xxx:nvarchar）...
Rendering HTML inside textarea
I need to be able to render some HTML tags inside a textarea (namely , , , ) but textareas only interpret their content as text. Is there an easy way of doing it without relying on external libraries/plugins (I'm using jQuery)?
If not, do you know of any jQuery plugin I could use to do this?
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What's the best way to cancel event propagation between nested ng-click calls?
...ant to have an image overlay like a lot of sites. So when you click a thumbnail, a black overlay appears over your whole window, and a larger version of the image is centered in it. Clicking the black overlay dismisses it; clicking the image will call a function that shows the next image.
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Can iterators be reset in Python?
...erator in Python? I am using DictReader and would like to reset it to the beginning of the file.
15 Answers
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error, string or binary data would be truncated when trying to insert
I am running data.bat file with the following lines:
16 Answers
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