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suppose there are two tables now. The first table, called prepay_card, represents prepaid cards, and the second table represents transactions of prepaid cards represented by prepay_card_transition . the structure of our first table, prepay_card, is as ...
The sql statement is as follows SELECT sum(case when CONVERT(varchar(100), b.BillDate, 112) >= 20180101 AND CONVERT(varchar(100), b.BillDate, 112) < 20180126 then b.totalmoney else 0 end)AS , sum(case when CONVERT(varchar(100), b.BillDate, 11...
the database is postgresql. Table table shows the conditional data of several intervals of A _ Magi B ~ C ~ D, 1, finding the intersection of A _ mai B? 2. Find the intersection of Amurc, which is not in the B interval. 3. Find the intersection of Am...
there are two tables Table 1: Student number 1 | Student number 2 | Student number 3 001 | 002 | 003 Table 2: Student number | name 001 | Zhang San 002 | Li Si 003 | Wang Wu desired results: student number 1 | name 1 | student number 2 | nam...
there is a sql statement that you want to construct with the constructor of tp5, as follows Select * from tab1 where (axi1 and baked 1) or (a2 and baked 2) or (axi3 and baked 3) .or (aural N and baked N) Note: when N is equal to, there are as many o...
Please tell me how to convert the text column: x y z to: x-ray. Thank you. ...
problem description as follows, I created an attempt. I want group by to group the sum by RD.SKU and the RD.QTYRECEIVED field is sumsum, but I want to display the six fields of select instead of just showing RD.SKU and sumsum,. The simple point is, th...
wrote an attempt in oracle. I want to add a field to get the QTYGOOD and of the same RD.SKU line. CREATE OR REPLACE VIEW aaa AS SELECT R.WHSEID, RD.STORERKEY, RD.SKU, CASE WHEN LOC.LOCATIONCATEGORY <> NG AND RD.COND...
I successfully run the following sql statement to find the ideal data exec sp_executesql N Select * FROM FC_Repair WHERE F_RepairDepartmentId in ( ace7f0e7-f158-4587-920d-e76546885198 , bf421a22-786b-40fd-8af...
SQL quotation marks backslash escape can be bypassed by double-byte injection. Can this problem be avoided by transferring utf-8 first? ...
online time() online 20 id 2 s online_status deduction time () has been higher than 30, but id 1 does not have it, but it is still found out? ...
there is a system that has no source code and cannot find a developer. Now I want to make a report by myself, but I have encountered a disgusting problem. Consult database SQL SERVER 2008 R2 the simplified table structure is as follows id customer ID...
the user guesses the score of a game, which is about < table > < thead > < tr > < th > id < th > < th > team1 (home team scores) < th > < th > team2 (visiting team scores) < th > < tr > < thead > < tbody > < tr > < td > 1 < td > < td > 1 < ...
the data sent from the front desk is of date type, and then query how to report such an error in the field of date type of sql server database based on this data: ,date : : : ...
1: after the page login is redirected, the user switches routes, how to ensure that he does not have to log in every time? 2: the user enters a routing link at will for the first time, how to judge that he has not logged in yet, and needs to log in. ...
eventloop about ndejs see a picture like this? means that you don t understand what it means, and it is divided into different stages . nodejs: the second and third pictures probably understand what eventloop does, but I was confused when I saw...
there are many places in project development where the module content is the same or highly similar, but the routing source is different, how to use different interfaces in the component when using the component? Or pass different values to the same inte...
for example, in the nodejs environment, there is a global variable global, which I defined directly when I didn t use typescript before. for example, redis instances and database instances are all defined as global instances. When it comes to typescrip...
do a video screenshot function. After canvas is finished, the picture is changed into a picture and saved locally. It is said that it is a cross-domain problem when checked on the Internet. My videos and pictures are in my local ah, and then put the pi...