文件名称：SQL2000自学通教程精华版
文件大小：2.49MB
文件格式：PDF
更新时间：2013-06-22 09:08:49
sql 自学
目录.......................................................................................................................................... 1 译者的话 ............................................................................................................................. 14 第一周概貌............................................................................................................................. 16 从这里开始............................................................................................................. 16 第一天 SQL 简介.................................................................................................................. 17 SQL 简史................................................................................................................ 17 数据库简史............................................................................................................. 17 设计数据库的结构................................................................................................... 21 SQL 总览......................................................................................................... 23 流行的 SQL 开发工具....................................................................................... 24 SQL 在编程中的应用........................................................................................ 27 第二天 查询— — SELECT 语句的使用................................................................................... 30 目标 .................................................................................................................... 30 背景................................................................................................................. 30 一般的语法规则............................................................................................... 30 你的第一个查询............................................................................................... 33 总结 .................................................................................................................... 37 问与答 ................................................................................................................. 38 校练场.................................................................................................................... 38 练习 .................................................................................................................... 39 第三天 表达式 条件语句与运算.......................................................................................... 40 第四天 函数 对数据的进一步处理....................................................................................... 60 目标 .................................................................................................................... 60 汇总函数................................................................................................................. 60 COUNT............................................................................................................ 61 SUM ................................................................................................................ 61 AVG................................................................................................................. 63 MAX................................................................................................................ 63 MIN................................................................................................................. 64 VARIANCE...................................................................................................... 65 STDDEV.......................................................................................................... 66EMAIL wyhsillypig@163.com 2 日期/时间函数......................................................................................................... 66 ADD_MONTHS................................................................................................ 67 LAST_DAY...................................................................................................... 68 MONTHS_BETWEEN....................................................................................... 69 NEW_TIME...................................................................................................... 70 NEXT_DAY...................................................................................................... 71 SYSDATE......................................................................................................... 72 数学函数................................................................................................................. 72 ABS ................................................................................................................. 73 CEIL和 FLOOR ............................................................................................... 73 COS COSH SIN SINH TAN TANH........................................................ 73 EXP................................................................................................................. 75 LN and LOG..................................................................................................... 75 MOD................................................................................................................ 76 POWER............................................................................................................ 77 SIGN ............................................................................................................... 77 SQRT ............................................................................................................... 78 字符函数................................................................................................................. 79 CHR................................................................................................................. 79 CONCAT .......................................................................................................... 79 INITCAP.......................................................................................................... 80 LOWER和 UPPER ........................................................................................... 81 LPAD 与 RPAD................................................................................................. 82 LTRIM与 RTRIM............................................................................................. 83 REPLACE ........................................................................................................ 84 SUBSTR........................................................................................................... 85 TRANSLATE.................................................................................................... 88 INSTR............................................................................................................. 88 LENGTH.......................................................................................................... 89 转换函数................................................................................................................. 89 TO_CHAR........................................................................................................ 90 TO_NUMBER................................................................................................... 91 其它函数................................................................................................................. 91 GREATEST 与 LEAST...................................................................................... 91 USER............................................................................................................... 92 总结........................................................................................................................ 92 问与答.................................................................................................................... 93 校练场.................................................................................................................... 93 练习........................................................................................................................ 94 第五天 SQL 中的子句.........................................................................