数据库设计 宾馆管理系统。有源代码可以作为参考,利用sql语句实现
2022-06-30 18:07:09 2.26MB sql
只有数据库的恢复记录。并且存在备份,有备份没有项目资料的情况下的思路!!!! 只有数据库的恢复记录。并且存在备份,有备份没有项目资料的情况下的思路!!!! 只有数据库的恢复记录。并且存在备份,有备份没有项目资料的情况下的思路!!!! 不一定适合,但是可以参考! 不一定适合,但是可以参考! 不一定适合,但是可以参考! 本人已经恢复! 本人已经恢复! 本人已经恢复!
2022-06-29 14:05:51 3KB NC NC5 NC5011
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VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件VisualC 实效编程 85 SQL语句中设置时段检索条件Visu
2022-06-29 09:10:33 2.35MB vVisualC实效编程85
VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL语句中设置字符串检索条件VisualC 实效编程 86 SQL
2022-06-29 09:10:32 54KB VisualC实效编程86
VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设置多个字符串检索条件VisualC 实效编程 87 SQL语句中设
2022-06-29 09:10:32 56KB vvVisualC实效编程8
VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL语句嵌套VisualC 实效编程 88 SQL
2022-06-29 09:10:31 54KB VisualC实效编程88
此工具可以将SQL Server表数据导出成Insert语句。SQL Server的导入导出功能可以导出创建数据库各对象的脚本,却不提供导出目标表的现有数据为Insert语句的功能,此工具可以将SQL Server表数据导出成Insert语句
2022-06-26 15:05:13 301KB Sqlserver 导出Insert
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目 录 (01) SELECT .................................. ............... .......................................2 查找 SELECT "栏位名" FROM "表格名" (02) DISTINCT................................. ............... .....................................2 不同值 SELECT DISTINCT "栏位名" FROM "表格名" (03) WHERE...................................... ............... ....................................2 条件 SELECT "栏位名" FROM "表格名" WHERE "条件" (04) AND OR ...................................... ............... ..................................3 条件并和或 SELECT "栏位名" FROM "表格名" WHERE "简单条件" {[AND|OR] "简单条件"} (05) IN .............................................. ............... ..................................3 包含 SELECT "栏位名" FROM "表格名" WHERE "栏位名" IN ('值一', '值二 ', ...) (06) BETWEEN.............................. ............... ........................................4 范围包含 SELECT "栏位名" FROM " 表格名" WHERE "栏位名" BETWEEN '值一' AND '值二' (07) LIKE....................................... ............... .......................................4 通配符包含 SELECT "栏位名" FROM "表格名" WHERE "栏位名" LIKE {套 式} -- 支持通配符‘_’ 单个字符 '%' 任意字符 (08) ORDER BY............................... ............... ......................................5 排序 SELECT "栏位名" FROM "表格名" [WHERE "条件"] ORDER BY "栏位 名" [ASC, DESC] -- ASC 小到大 DESC 大到小 (09) 函数........................................ ............... ......................................5 函数 AVG (平均) COUNT (计数) MAX (最大值) MIN (最小值) SUM (总合) SELECT "函数名"("栏位名") FROM "表格名" (10) COUNT .................................... .............. ......................................6 计 数 SELECT COUNT(store_name) FROM Store_Information WHERE store_name is not NULL -- 统计非空 SELECT COUNT(DISTINCT store_name) FROM Store_Information -- 统计多 少个不同 (11) Group By .................................. .............. .....................................6 字段分组 SELECT "栏位 1", SUM("栏位 2") FROM "表格名" GROUP BY " 栏位 1" (12) HAVING...................................... .............. ....................................7 函数条件定位 SELECT "栏位 1", SUM("栏位 2") FROM "表格名" GROUP BY "栏位 1" HAVING (函数条件) (13) ALIAS........................................... .............. ..................................7 别名 SELECT "表格别名"."栏位 1" "栏位别名" FROM "表格名" "表格别名" (14) 连接................................................ ..............................................8 SELECT A1.region_name REGION, SUM(A2.Sales) SALES FROM Geography A1, Store_Information A2 WHERE A1.store_name = A2.store_name GROUP BY A1.region_name (15) 外部连接........................................... ............................................9 SELECT A1.store_name, SUM(A2.Sales) SALES FROM Georgraphy A1, Store_Information A2 WHERE A1.store_name = A2.store_name (+) GROUP BY A1.store_name (16) Subquery .............................. .............. .........................................9 嵌套 SELECT "栏位 1" FROM "表格" WHERE "栏位 2" [比较运算素] (SELECT "栏位 1" FROM "表格" WHERE (17) UNION.................................... ............... ......................................10 合并不重复结果 [SQL 语句 1] UNION [SQL 语句 2] (18) UNION ALL....................................... .............. ............................ 11 合并所有结果 [SQL 语句 1] UNION ALL [SQL 语句 2] (19) INTERSECT..................................................... ............... ............. 11 查找相同值 [SQL 语句 1] INTERSECT [SQL 语句 2] (20) MINUS............................ ............... ..............................................12 显示第一个语句中不在第二个语句中的项 [SQL 语句 1] MINUS [SQL 语句 2] (21) Concatenate................................... ............... ...............................12 结果相加(串联) MySQL/Oracle: SELECT CONCAT(region_name,store_name) FROM Geography WHERE store_name = 'Boston'; SQL Server: SELECT region_name + ' ' + store_name FROM Geography WHERE store_name = 'Boston'; (22) Substring ...................................................... ............... ...............13 取字符 SUBSTR(str,pos) SUBSTR(str,pos,len) (23) TRIM ...... .............. .....................................................................14 去空 SELECT TRIM(' Sample '); TRIM()首尾, RTRIM()首, LTRIM()尾 (24) Create Table ........... .............. .....................................................14 建立表格 CREATE TABLE "表格名"("栏位 1" "栏位 1 资料种类","栏位 2" "栏位 2 资料种类",... ) (25) Create View............................. .............. ......................................15 建立表格视观表 CREATE VIEW "VIEW_NAME" AS "SQL 语句" (26) Create Index........................................... ............... ......................16 建立索引 CREATE INDEX "INDEX_NAME" ON "TABLE_NAME" (COLUMN_NAME) (27) Alter Table.. .............. ..................................................................16 修改表 ALTER TABLE "table_name"[改变方式] -- ADD 增加;DROP 删 除;CHANGE 更名;MODIFY 更改类型 (28) 主键.......................... ..................................................................18 ALTER TABLE Customer ADD PRIMARY KEY (SID) (29) 外来主键....................................... ............ ..................................18 CREATE TABLE ORDERS(Order_ID integer,Order_Date date,Customer_SID integer,Amount double,Primary Key (Order_ID),Foreign Key (Customer_SID) references CUSTOMER(SID)); (30) Drop Table................................................. ............... ...................19 删除表 DROP TABLE "表格名" (31) Truncate Table ................. ............... ............................................20 清除表内容 TRUNCATE TABLE "表格名" (32) Insert Into....................................... ............... .............................20 插入内容 INSERT INTO "表格名" ("栏位 1", "栏位 2", ...) VALUES ("值 1", "值 2", ...) (33) Update ........................ ................ ................................................20 修改内容 UPDATE "表格名" SET "栏位 1" = [新值] WHERE {条件} (34) Delete ......................................... .............. .................................21 DELETE FROM "表格名" WHERE {条件}
2022-06-25 17:13:30 1.13MB SQL 数据库
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移动开发-基于Symbian手机开发平台的语句级智能输入法研究.pdf
2022-06-24 09:06:44 2.28MB 移动开发-基于Symbian手机
VBA(Power Point) 全对象、事件、属性、方法、函数、语句 中文说明 xlsx格式
2022-06-23 20:11:19 313KB VBA powerpoint ppt 属性
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