sql loader example

For example, set the name of the BBS reply number field Renum variable name $renum record ordinal field ID variable name $id When we post in the forum will overwrite the main paste reply number, the traditional method to use to two sentences SQL statement: Take out the original value $query 1= "Select Renum bbs where id = ' $id '"; ...... $renum; Write back to the database $query 2= "Update bbs set renum =

Statement for example, set table name is the number of BBS reply renum variable name $renum record ordinal field ID variable name $id When we post in the forum will overwrite the main paste reply number, the traditional method to use to two sentences SQL statement: Take out the original value $query 1= "Select Renum bbs where id = ' $id '"; ...... $renum + +; Write back to the database $query 2= "Update bbs

Label: -------------------Further filter the results of the grouping statistics (with the HAVING clause used)------------------------------ Select * fromstudent2010--1. Query the number of faculties in the Qypt08class table, showing only the records of more than 400 people SelectYxsum(RS) fromQypt08classGroup byYx having sum(RS)> - --2. The number of elective courses in the Stucou table shows a record of less than 30 (showing Couno and corresponding people) SelectCouno,Count(*) fromSt

Tags: function apply arc font var. project Bubuko GPO Body Count SELECT * from Tbiz_projectrelation Target statistics each project has several application records Step1 SELECTProjectID, Relationids= STUFF((SELECT ',' + CONVERT(VARCHAR,[Relationid]) fromTbiz_projectrelation TWHEREProjectID=T1. ProjectID forXML PATH ("')),1,1,"') fromTbiz_projectrelation T1 Step2 SELECTProjectID, Relationids= STUFF((SELECT ',' + CONVERT(VARCHAR,[Relationid]) fromTbiz_projectrelation TWHEREProjectID=T1. ProjectI

Now you need to query a set of data, which is the grouping of data in a column of fields (COLUMN01) after a range of queries:Select (Casewhen [Column01] >0 and [column01]　　Example of use in SQL Server to determine grouping sorting

, ") =" or CHARINDEX (@status, f_status) >0) and (ISNULL (@auditStatus, ") =" or CHARINDEX (@auditStatus, F_status) >0)) SELECT * From Select f_id as ID, ' recall ' as type, F_SN as transfer number, F_SN as number, f_servicetime as business date, f_outfactoryname as Call factory, F_outwarehousena Me as pull out the warehouse, F_infactoryname as is transferred into the factory, F_inwarehousename as into the warehouse, f_creationtime as creation time, F_creator as creator, f_status as state, F_au

.[id]When matchedThen update set T.[DESC]=S.[DESC]When not matchedThen insert values (S.[id],s.[desc])When not matched by sourceThen deleteOutput $action as[ACTION],Inserted. [ID] as Insertid,Inserted. [Desc] as Inserddesc,Deleted. [ID] as Deleteid,Deleted. [Desc] as Deletedesc;----Join a conditionMerge into targettable as TUsing SourceTable as S on T.[id]=s.[id]When matched and s.[id]=3Then update set T.[DESC]=S.[DESC]When not matchedThen insert values (S.[id],s.[desc])When not matched by sourc

failed Alert ("Delete Failed"); } ); //Delete a table Fx.executesql ("drop table Stu", [], function(FX, result) {//Table creation succeeded Alert ("Table Deletion succeeded"); }, function () { //Table creation failed Alert ("Table Delete failed"); } ); }) } } Script> Head> Body> PID= "One">TestP>

sql| News | web | statement In the SQL world, the most fundamental operation is the SELECT statement. When SQL is used directly under Database Tools, many people are. 　　Using SQL statements in ASP 1: Select query Be familiar with the following actions: SELECT whatFrom whichtableWHERE CNWEBJX Executing the above stateme

() ... Within the range of exists exists Not exists does not exist 11. GROUP BYv system functions1. Statistical (aggregation) functionsThe Transact-SQL programming language provides the following aggregate functions: AVG returns the average in the specified group, and the null value is ignored. Example: Select Prd_no,avg (qty) from the Sales group by Prd_no2. Count returns the number of items

This section will analyze a more complex example based on the pl/sql of the previous study to teach readers how to write a complete pl/sql program.Example Design1. Function designThe postgraduate enrollment system developed by a university requires the design of the pl/sql procedure to deal with the candidate's perform

test_join_1 UNION All SELECT from test_join_2 UNION All SELECT from Test_join_3 ORDER by ID;6. Append StreamsA> getting data from two data sourcesB> take out all the data in the first streamC> Append data from the second stream to the first streamSimilar to SQL (Kettle execution results are consistent with SQL) are as follows:SELECT from test_join_1 UNION All SELECT from test_join_2;7. Prioritize s

first, what is TVP?table-valued parameter Table-value Parameter (TVP)Provides a way to convert a client application in amultiple rows of dataA simple way to marshal to SQL Server without requiring multiple round trips or special server-side logic to process data. You can use table-valued parameters to wrap data rows in a client application and send data to the server using a single parameterized command. The incoming data row is stored in a table var

This is my article backup, original source: [reading experience] data paging optimization, with SQL 2012 Offset-fetch as an exampleHttp://www.dotblogs.com.tw/mis2000lab/archive/2015/04/10/sql_querying_paging_offset-fetch.aspxThis article originates from Microsoft PressThe 2015 new book- t-SQL querying Published 3/6/2015 1st Edition 864 pages Book 978-0-7356-8504-8 EBook 978-0-13-398

intoTValues(i);8 Commit;9 EndLoop;Ten End; One /4. Batch commit.1 Create or Replace procedureproc_test2 as3 begin4 forIinch 1..1000005 Loop6 Insert intoTValues(i);7 EndLoop;8 Commit;--Batch Submission9 End;Ten /5. Write a SQL, which is inserted into a set concept by the original procedure, and a whole batch is written to the data buffer area.1 Insert into Select from by Level 1000000 ; 2 commit;6. Insert data in dir

. Insert:Connection conn = CreateConnection (); String sql = "INSERT into TMap (mapserviceid,mapid,mapname) VALUES (?,?,?)"; PreparedStatement pstmt=conn.preparestatement (SQL);p stmt.setstring (1, "1");p stmt.setstring (2, "7"); Pstmt.setstring (3, "Test1");p stmt.executeupdate ();p stmt.close (); Conn.close ();2. Enquiry String sql = "SELE

in, to check the inserted data, from the minimum number to the maximum number of those numbers is not inserted into the table, find out the number of the previous and the last number? In this example, from 1 to 13, there are 3, 6, 7, 10 are not inserted in the table, the first and the last of these numbers are 2 and 4, 5 and 8, 9 and 11, i.e.Prev_val Next_val---------- ----------2 45 89 11If you don't have to parse the function to get this post-resul

What is a stored procedure? Defined: To use the usual or very complex work, which is written in a SQL statement and stored with a specified name, you can automatically complete the command by simply calling execute when you want the database to provide the same functionality as the defined stored procedure. Here, someone might ask: so the stored procedure is just a bunch of SQL statements? Why do Micros

the block will be executed,Therefore, the code must be guaranteed to close the connection after accessing the database.In the following code, the Command object is used to execute the SQL Statement of the query class and assign the result set to the Dataread object.Private Static stringstrconnect="data source=localhost;UID=sa;pwd=aspent;database=logindb"sqlconnetion objconnection=NewSqlConnection (strconnect); SqlCommand objcommand=NewSqlCommand (" "

shown in the following example: Copy Code code as follows: DECLARE Custcursor CURSOR For SELECT * from Customers WHERE Cust_email is NULL Using cursors Use the Open CURSOR statement to open the cursor and use the FETCH statement to access the cursor data. The fetch indicates which rows to retrieve, where to retrieve them, and where to place them (such as variable names), and here is an