mysql嵌套查询
@海丁1624：mysql 嵌套查询 -
涂炊14738628019…… 你的sql语句中 的 from 和 to 与sql保留关键词 有冲突.select a.train_no, a.sequ_no t_from , b.sequ_no t_to from (select * from aa where st_name= ＂xxx＂ ) as a , (select * from aa where st_name= ＂xx＂) as b where a.train_no = b.train_no and a...
@海丁1624：在mysql中实现嵌套查询 -
涂炊14738628019…… select yr_student_info.name from yr_student_info where yr_student_info.school_id in (select yr_school_info.id from yr_school_info where yr_school_info.province='上海' and yr_school_info.city='上海')
@海丁1624：mysql里的嵌套查询的例子 -
涂炊14738628019…… select SKTNO,SUM(XSJE) XSJE FROM XSJL 查询每个收款台的总销售金额.
@海丁1624：mysql支持嵌套查询或连接查询吗? -
涂炊14738628019…… sql语句里有嵌套查询,如:select sname from student where sno in select sno from sc where cno='2'; 这样得查询可以实现一条指令对两个表操作 可在php里我用这个命令来对mysql操作时显示sql语句错误!!不支持,mysql不支持嵌套查询,...
@海丁1624：mysql 如何对一张表进行嵌套查询 -
涂炊14738628019…… 你这是更新,不是查询 update a set a.MULTISELECT_ID=b.MULTISELECT_ID from RES_OBJECT a,RES_OBJECT b where (a.MULTISELECT_ID is null or a.MULTISELECT_ID=0) and b.RES_ID=PARENT_NODE_RES_ID
@海丁1624：Mysql中的update语句如何嵌套子查询 -
涂炊14738628019…… update tablename a,(select * from tablename where xx='xxx') b set a.xx='xxx' where a.id=b.id
@海丁1624：“mysql ”多表联合查询语句怎么写? -
涂炊14738628019…… 一使用SELECT子句进行多表查询SELECT 字段名 FROM 表1,表2 … WHERE 表1字段 = 表2字段 AND 其它查询条件SELECT a.id,a.name,a.address,a.date,b.math,b.english,b.chinese FROM tb_demo065_tel AS b,tb_demo065 AS a WHERE a....
@海丁1624：some嵌套查询的用法 -
涂炊14738628019…… MySQl从4.11版后已经完全支持嵌套查询了,那么下面举些简单的嵌套查询的例子吧(源程序来自MySQL User Manual): 1. SELECT语句的子查询 语法: SELECT ... FROM (subquery) AS name ... 先创建一个表: CREATE TABLE t1 (s1 INT, s2...
@海丁1624：mysql 嵌套查询语句求教 -
涂炊14738628019…… 这个好象直接用JOIN查询就可以了吧. select * from 一个评论的表 a,一个评论的表 b, 一个评论的表 c where a.id=b.parentID and b.id=c.parentID
@海丁1624：mysql怎么在查询中嵌套子查询 -
涂炊14738628019…… select a.id,a.hour from (select id,hour(time) as hour from table) a group by a.hour 不知道对不对 呵呵 感觉这样应该可以
涂炊14738628019…… 你的sql语句中 的 from 和 to 与sql保留关键词 有冲突.select a.train_no, a.sequ_no t_from , b.sequ_no t_to from (select * from aa where st_name= ＂xxx＂ ) as a , (select * from aa where st_name= ＂xx＂) as b where a.train_no = b.train_no and a...
@海丁1624：在mysql中实现嵌套查询 -
涂炊14738628019…… select yr_student_info.name from yr_student_info where yr_student_info.school_id in (select yr_school_info.id from yr_school_info where yr_school_info.province='上海' and yr_school_info.city='上海')
@海丁1624：mysql里的嵌套查询的例子 -
涂炊14738628019…… select SKTNO,SUM(XSJE) XSJE FROM XSJL 查询每个收款台的总销售金额.
@海丁1624：mysql支持嵌套查询或连接查询吗? -
涂炊14738628019…… sql语句里有嵌套查询,如:select sname from student where sno in select sno from sc where cno='2'; 这样得查询可以实现一条指令对两个表操作 可在php里我用这个命令来对mysql操作时显示sql语句错误!!不支持,mysql不支持嵌套查询,...
@海丁1624：mysql 如何对一张表进行嵌套查询 -
涂炊14738628019…… 你这是更新,不是查询 update a set a.MULTISELECT_ID=b.MULTISELECT_ID from RES_OBJECT a,RES_OBJECT b where (a.MULTISELECT_ID is null or a.MULTISELECT_ID=0) and b.RES_ID=PARENT_NODE_RES_ID
@海丁1624：Mysql中的update语句如何嵌套子查询 -
涂炊14738628019…… update tablename a,(select * from tablename where xx='xxx') b set a.xx='xxx' where a.id=b.id
@海丁1624：“mysql ”多表联合查询语句怎么写? -
涂炊14738628019…… 一使用SELECT子句进行多表查询SELECT 字段名 FROM 表1,表2 … WHERE 表1字段 = 表2字段 AND 其它查询条件SELECT a.id,a.name,a.address,a.date,b.math,b.english,b.chinese FROM tb_demo065_tel AS b,tb_demo065 AS a WHERE a....
@海丁1624：some嵌套查询的用法 -
涂炊14738628019…… MySQl从4.11版后已经完全支持嵌套查询了,那么下面举些简单的嵌套查询的例子吧(源程序来自MySQL User Manual): 1. SELECT语句的子查询 语法: SELECT ... FROM (subquery) AS name ... 先创建一个表: CREATE TABLE t1 (s1 INT, s2...
@海丁1624：mysql 嵌套查询语句求教 -
涂炊14738628019…… 这个好象直接用JOIN查询就可以了吧. select * from 一个评论的表 a,一个评论的表 b, 一个评论的表 c where a.id=b.parentID and b.id=c.parentID
@海丁1624：mysql怎么在查询中嵌套子查询 -
涂炊14738628019…… select a.id,a.hour from (select id,hour(time) as hour from table) a group by a.hour 不知道对不对 呵呵 感觉这样应该可以
