outer-join

问题 This is regarding converting query to ANSI SQL. I tried writing this query with Oracle old syntax and it threw the following error so I ended up changing it as shown below . After researching, I found that ANSI SQL supports such requirements. ERROR :a table may be outer joined to at most one other table tips Here is the query that I wrote which is working but it would be great to know if there are ways this can be re-written in ANSI-SQL or by using old outer join syntax. I am looking for the

问题 The Following is the schema +---------+---------+ | Employee Table | +---------+---------+ | EmpId | Name | +---------+---------+ | 1 | John | | 2 | Lisa | | 3 | Mike | | | | +---------+---------+ +---------+-----------------+ | Family Table | +---------+-----------------+ | EmpId | Relationship | +---------+-----------------+ | 1 | Father | | 1 | Mother | | 1 | Wife | | 2 | Husband | | 2 | Child | +---------+-----------------+ +---------+---------+ | Loan Table | +---------+--------+ |

问题 Table 1: SalesforceReportWeekly ; Fields: [Opportunity: Store Number], [Target Circuit Completion (FOC)], ... Table 2: SentSalesforceReportWeekly Fields: [Opportunity: Store Number], [Target Circuit Completion (FOC)], ... I need a query that will work in MS Access which will show all rows in the SalesforceReportWeekly that do not have a corresponding row in the SentSalesforceReportWeekly. using the [Opportunity: Store Number] AND the [Target Circuit Completion (FOC)] fields. records where

问题 I currently have this query set-up: SELECT topic.content_id, topic.title, image.location FROM mps_contents AS topic INNER JOIN mps_contents AS image ON topic.content_id = image.page_id WHERE topic.page_id = (SELECT page_id FROM mps_pages WHERE page_short_name = 'foo' ) AND image.display_order = '1' This is because I want to merge two rows from the same table in one row. This is a simplified setup of the table ----------------------------------------------------------- | page_id | content_id |

问题 I have to rewrite a lot of SQL queries with Oracle outer join notation (+) to ANSI SQL. I read something about Oracle syntax but there were very easy examples. How should look this query in ANSI notation? SELECT * FROM realtion r1, relation r2 WHERE r1.relno=r2.relno(+) AND r.id(+)=10 or SELECT * FROM Mail M, Code C, Relation R WHERE M.STATUS = 2 AND C.id = M.usrID AND r.relo(+) = m.item AND R.item(+) = m.att 回答1: In a first query you have alias r, my guess it is r2. SELECT * FROM realtion r1

问题 I have 2 tables like this in Access 2007... Table 1 - tbEmployees Details FieldName Data Type PK *ID Autonumber EmployeeID Number First Text .... ... Table 2 - tbEmployeesQualification FieldName Data Type PK *ID Autonumber CV (attachment) Attachment Qualification / Certificate (memo box) Skills (memo box) I am at design stage in relationship. I am trying to use outer join's from the above tables because I want to attached CV's for each employee. I have tried the following. Drag the ID from

问题 How do we do LEFT JOIN with old syntax? Let's say you have a User table and UserRole table, and you are holding the ID of the UserRole in User table. Here is the query to retrieve all User's names, and the Role Names with the new notation: SELECT U.Username, US.[Desc] FROM [User] U INNER JOIN UserRole US ON U.UserRoleId = US.Id And here is the old notation: SELECT U.Username, US.[Desc] FROM [User] U, UserRole US WHERE U.UserRoleId = US.Id Now, let's assume that all users don't have a role,

问题 I'm using PostgreSQL 8.4.6 with CentOS 5.5 and have a table of users: # select * from pref_users where id='DE2'; id | first_name | last_name | female | avatar | city | lat | lng | login | last_ip | medals | logout -----+------------+-----------+--------+------------------+---------------------+-----+-----+----------------------------+---------+--------+---------------------------- DE2 | Alex | | f | 2_1280837766.jpg | г. Бохум в Германии | | | 2011-01-02 19:26:37.790909 | | | 2011-01-02 19:29

问题 I have the following two tables: Jobs AreaID, JobNo (composite key) Logs LogID, AreaID, JobNo I need to get all jobs that don't have any logs associated with them. In SQL I could do: SELECT Jobs.AreaID, Jobs.JobNo FROM Jobs LEFT JOIN Logs ON Jobs.AreaID = Logs.AreaID AND Jobs.JobNo = Logs.JobNo WHERE Logs.LogID is null But I'm not sure how to accomplish this with NHibernate. Could anyone offer any pointers? Here are my mappings: <class name="Job" table="Jobs"> <composite-key name="Id"> <key

问题 In the data.table FAQ, the nomatch = NA parameter is said to be akin to an outer join. However, I haven't been able to get data.table to do a full outer join – only right outer joins. For example: a <- data.table("dog" = c(8:12), "cat" = c(15:19)) dog cat 1: 8 15 2: 9 16 3: 10 17 4: 11 18 5: 12 19 b <- data.table("dog" = 1:10, "bullfrog" = 11:20) dog bullfrog 1: 1 11 2: 2 12 3: 3 13 4: 4 14 5: 5 15 6: 6 16 7: 7 17 8: 8 18 9: 9 19 10: 10 20 setkey(a, dog) setkey(b, dog) a[b, nomatch = NA] dog