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rownum

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Raziyah00 last edited by
Have a large number of tables Am with a big ring, m - some index. I'm making this request:
```
SELECT * FROM A1, A2, ... An WHERE ROWNUM < 2;
```
And my request is up. Logically, the bd should choose the first lines from each table, collect them in one, assign one and remove them. Why is it taking too long?
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simrah last edited by
The logic of the database looks different. The request contains a decarto work, all the lines of all the tables are multiplied by each other because the conditions of the tables are not specified in the section where/join. Once the lines are combined in all possible combinations, the first line will be taken. That's why it took so long. The problem can be solved by several methods, the simplest, to replace the listing of the sub-request tables:
```
select * 
from 
    (select * from a1 where rownum < 2), 
    (select * from a2 where rownum < 2)...
```
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Bring range data
Software Programming • mysql sql query • • Trenton

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You need to list the dates in one sub-select and do LEFT JOIN to list all:SELECT dados.id, dados.valor, datas.data FROM ( SELECT '2018-10-01' AS data UNION SELECT '2018-10-02' AS data UNION SELECT '2018-10-03' AS data UNION SELECT '2018-10-04' AS data UNION SELECT '2018-10-05' AS data UNION SELECT '2018-10-06' AS data ) AS datas LEFT JOIN dados ON dados.data = datas.data If your column data table dados not in format date, you will need to do this:SELECT dados.id, dados.valor, datas.data FROM ( SELECT '01/10/2018' AS data UNION SELECT '02/10/2018' AS data UNION SELECT '03/10/2018' AS data UNION SELECT '04/10/2018' AS data UNION SELECT '05/10/2018' AS data UNION SELECT '06/10/2018' AS data ) AS datas LEFT JOIN dados ON dados.data = datas.data
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Do not apply filter or segmentation to matrix column in power bi
Software Programming • sql server sql powerbi • • Saumya

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You have to define two measures with DAX:Valor = SUM(tabla[valor]) Valor total = CALCULATE(SUM(tabla[valor]), ALL(Fechas)) The first measure is sensitive to the date filter, while the second one is not. You must change the name of the objects: table by your table, value by the column that represents the value and dates by the name of your date table.
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How to use ROWNUM?
Software Programming • oracle • • Oba22

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You could use the analytical function FIRST_VALUE along with the clausula DISTINCT to get the result you want. WITH CURSO AS ( SELECT 'C1' CURSO, 'ejemplo1' NOMBRE_CURSO, 'herramientas' AREA, 1 ORDEN FROM DUAL UNION ALL SELECT 'C1' CURSO, 'ejemplo1' NOMBRE_CURSO, 'aplicaciones' AREA, 2 FROM DUAL UNION ALL SELECT 'C1' CURSO, 'ejemplo1' NOMBRE_CURSO, 'metodologias' AREA, 3 FROM DUAL UNION ALL SELECT 'C2' CURSO, 'ejemplo2' NOMBRE_CURSO, 'aplicaciones' AREA, 1 FROM DUAL UNION ALL SELECT 'C2' CURSO, 'ejemplo2' NOMBRE_CURSO, 'metodologias' AREA, 2 FROM DUAL UNION ALL SELECT 'C3' CURSO, 'ejemplo3' NOMBRE_CURSO, 'aplicaciones' AREA, 1 FROM DUAL ), EMPLEADO AS ( SELECT '999' NUMERO_EMPLEADO, 'ANA' NOMBRE, 'C1' CURSO FROM DUAL UNION ALL SELECT '999' NUMERO_EMPLEADO, 'ANA' NOMBRE, 'C2' CURSO FROM DUAL UNION ALL SELECT '999' NUMERO_EMPLEADO, 'ANA' NOMBRE, 'C3' CURSO FROM DUAL ) SELECT DISTINCT E.NUMERO_EMPLEADO, E.NOMBRE, C.CURSO, FIRST_VALUE(C.AREA) OVER (PARTITION BY C.CURSO ORDER BY C.ORDEN RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS CURSO FROM CURSO C JOIN EMPLEADO E ON C.CURSO = E.CURSO Focus on the last SELECT That's the one you'd have to use. The WITH It's just to simulate the tables of your example.Keep in mind that I made a modification on your EMPLEADO table, as I think you have a mistake there, because the way your example is raised, they would never get in the JOIN a registration with course 3 (C3). Basically, change the last record of your C2 to C3 employee board.Finally, as you did not indicate that order should be used to bring the first record, I added an ORDER column in the CURSO table. If you prefer, you could use alphabetic order by modifying the query.SELECT DISTINCT E.NUMERO_EMPLEADO, E.NOMBRE, C.CURSO, FIRST_VALUE(C.AREA) OVER (PARTITION BY C.CURSO ORDER BY C.AREA RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS CURSO FROM CURSO C JOIN EMPLEADO E ON C.CURSO = E.CURSO Greetings
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How to view the columns of a system view in SQL Server?
Software Programming • sql server sql • • terrea

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Try this (I'm assuming the name of the VIEW It is testeSELECT AO.name AS [View Name] , AC.name AS [Column Name] , ST.name AS [Type] FROM sys.all_objects AO INNER JOIN sys.all_columns AC ON AC.object_id = AO.object_id INNER JOIN sys.types ST ON AC.system_type_id = ST.system_type_id AND AC.user_type_id = ST.user_type_id WHERE AO.type = 'V' AND AO.name = 'teste' ORDER BY AC.name
Use of ROWNUM to create a unique key
Software Programming • sql oracle • • briley

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@MikeSELECT ROW_NUMBER() OVER(ORDER BY A) AS REC_NUMBER, T.* FROM T ORDER BY A
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MySQL @rownum UPDATE correlative based on a parent_id
Software Programming • mysql sql update • • charlenef

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If someone needs to update a correlative based on a parent_id with a single update, this would be the syntax in MySQLset @row_number := 0; UPDATE personal_antecedente pa INNER JOIN ( SELECT @row_number:=CASE WHEN @personal_id = tabla.idPersonal THEN @row_number + 1 ELSE 1 END AS num, @personal_id:= tabla.idPersonal idPersonal, tabla.idAntecedente FROM ( SELECT idAntecedente, idPersonal FROM personal_antecedente ORDER BY idPersonal ) as tabla ORDER BY idPersonal) AS pa2 ON (pa2.idAntecedente = pa.idAntecedente) SET pa.correlativo = pa2.num Source: https://docs.microsoft.com/es-es/sql/t-sql/functions/row-number-transact-sql?view=sql-server-ver15 https://www.mysqltutorial.org/mysql-row_number/
query SQL-oracle
Software Programming • sql oracle • • Demir

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You must do a query that allows you to obtain values between 2 ranges, only here you don't know the order so you need an RW from betweens as the nextSELECT * FROM Products WHERE (Price BETWEEN 10 AND 20) OR (Price BETWEEN 20 AND 10); but now taken to your code would be something like that, first, get average analyst salary,(SELECT AVG(sal) FROM emp GROUP BY job WHERE job = 'ANALYST') then, get average seller salary(SELECT AVG(sal) FROM emp GROUP BY job WHERE job = 'SALESMAN') if the above applies in a QUERY similar to that of the example but using your tables and coumas, the code would be the followingSELECT * FROM emp WHERE ( sal BETWEEN (SELECT AVG(sal) FROM emp GROUP BY job WHERE job = 'ANALYST') AND ( SELECT AVG(sal) FROM emp GROUP BY job WHERE job = 'SALESMAN' ) ) OR ( sal BETWEEN (SELECT AVG(sal) FROM emp GROUP BY job WHERE job = 'SALESMAN') AND ( SELECT AVG(sal) FROM enp GROUP BY job WHERE job = 'ANALYST' ) ); that query should return the records that possess salary between those 2 ranks
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Do real-time database search
Software Programming • php html sql ajax databank • • zymir

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You can call via ajax the result and create an autocomplete list using the component https://goodies.pixabay.com/javascript/auto-complete/demo.html You will give the autocomplete on the return call in Javascript:function ShowModalRelMapaAeronave() { $.ajax({ type: 'POST', url: BASE_SITE + '/Projeto/Projeto/BuscarAeronaves', data: { }, success: function (data) { new autoComplete({ selector: '#TxtAeronave', minChars: 2, source: function (term, suggest) { term = term.toLowerCase(); var choices = data; var matches = []; for (i = 0; i < choices.length; i++) if (~choices[i].toLowerCase().indexOf(term)) matches.push(choices[i]); suggest(matches); } }); $('#modalRelMapaAeronave').modal('show'); } }); } Here in case I call the post on a route, take the return and put on a txt of my html, so when it goes typing it will autocomplete. It is necessary to add the javascript and css of the library. The route is responsible for consulting.
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Bug with comment after RowNum
Software Programming • sql oracle oracle12c • • Avante

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I couldn't find an explanation for all this in one place. However, most parts google.ROWNUM ♪ https://docs.oracle.com/database/121/SQLRF/pseudocolumns009.htm#SQLRF00255 ♪ The effect you've noticed applies to any expression. The stockholder himself has a name and an expression is not, so the name for expression is generated if it's not clearly put. For example: select dummy, dummy x, 2*2, 2*2 /*duplicate*/, rownum, rownum -- preved from dual; D X 22 22/DUPLICATE/ ROWNUM ROWNUM--PREVED X X 4 4 1 1 The generosity rules have not yet been diagnosed. I'll find it. If anyone knows, you can boldly rule the answer.Got it. https://docs.oracle.com/database/121/SQLRF/sql_elements008.htm#SQLRF00223 - it says the top register:Non "ed identifiers are not case sensitive. Oracle interprets them as uppercase. Quoted identifiers are case sensitive.
SQL-
Software Programming • sql server sql • • carriann

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You can make use of https://docs.microsoft.com/es-es/sql/t-sql/functions/isnull-transact-sql?view=sql-server-2017 (SQL Server)The function accepts a value to check as the first parameter, if NULL is, will return as value the second parameter. If it is not NULL, it will return the value supplied as the first parameter.ISNULL(valor, 'En blanco') In your example, seeing you make use of LEFT JOINI think this is what you're looking for:SELECT c1.ASESOR as ASESOR, PRINCIPALES, ISNULL(ADICIONALES, 'En blanco') AS ADICIONALES FROM ( SELECT B.nombre AS ASESOR, count(A.estado) as PRINCIPALES, FECHA_CALL = GETDATE () FROM PACIFICARD_GESTION A, Usuarios B WHERE A.fecha >= '2019-03-19T00:00:00.000' and A.estado = 'ACEPTA' AND A.operador = B.login group by B.nombre ) c1 left JOIN ( SELECT B.nombre AS ASESOR, COUNT(A.cedula_adicional_1) AS ADICIONALES FROM PACIFICARD_GESTION A, Usuarios B WHERE A.fecha >= '2019-03-19T00:00:00.000' and (A.tipo_documento_adicional_1 like '%CED%' OR A.tipo_documento_adicional_1 like '%PAS%' OR A.tipo_documento_adicional_1 like '%RUC%') and A.operador = B.login group by B.nombre ) c2 ON c1.ASESOR=c2.ASESOR ORDER by c1.ASESOR Here are the different names of the same function for other SQL handlers: https://www.w3schools.com/sql/sql_isnull.asp .
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I do not remember my oracle system password
SQL, Database Testing • oracle • • emran

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Make sure you have set ORACLE_SID to the database instance name, in my example it is XE. Your Windows user needs to be a member of local group "ORA_DBA". So, now you do not connect to the database by username and password. Instead "/" indicates authentication by the Operating System as sys user. C:\>set ORACLE_SID=XE C:\>REM login as the database root account "sys" C:\>sqlplus / as sysdba SQL>alter user system account unlock; SQL>exit Best of luck!
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limit without using rownum,SQL-ORACLE 11G
Software Programming • sql oracle orac languagele 11g • • esther

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Select campo from tabla order by campo desc fetch first 5 rows only; The table is sorted down and the first 5 records are taken. Fetch first can be used from Oracle's 12c version, you can get more information in https://stackoverflow.com/questions/470542/how-do-i-limit-the-number-of-rows-returned-by-an-oracle-query-after-ordering
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Oracle 12cR2 User Can Select Table Without Privilege
SQL, Database Testing • oracle permissions oracle 12c • • shizuka

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The EXP_FULL_DATABASE role includes the SELECT ANY TABLE privilege.
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Can you use two @rownum in the same select?
Software Programming • mysql • • guilherme

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The error is given because you are using the same varibale @numrow. You should create another, with a different name, for example @numrow2.So:SELECT @rownum:=@rownum+1 ‘fila’, @rownum2:=@rownum2+1 ‘sublista’, nombre FROM personal t, (SELECT @rownum:=0) r, (SELECT @rownum2:=5) s Or using variables with more intuitive names:SELECT @fila:=@fila+1 ‘fila’, @sublista:=@sublista+1 ‘sublista’, nombre FROM personal t, (SELECT @fila:=0) r, (SELECT @sublista:=5) s
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Can I format MySQL AUTO_INCREMENT?
Software Programming • mysql sql • • emerson

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The incremental auto field was created precisely to avoid being touched by the user, making it possible to generate changes and delete data from the DB without generating collateral damage. In addition to facilitating their baseline integrity.If all this hasn't convinced you yet AUTO-INCREMENT It's for int, not for packing attributes, so you couldn't do what you're wanting.I hope I helped you. Greetings

rownum

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I do not remember my oracle system password
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