Select rows from table where value in column appears ones

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  1. Parker

    • 2020/12/17

    Try this query:

    SELECT colnum, coldate,colid 
     select *,COUNT(1) OVER (PARTITION BY colnum) as cnt 
    from (SELECT DISTINCT colnum, coldate,colid from testing ) t
    ) q
    where  q.cnt=1 and q.coldate in ('2015-01-01') and q.colid = 1

    fiddle link:!6/650c0/4

  2. Major

    • 2017/8/25

    SQL SELECT DISTINCT with COUNT on ROWS or on one columns. SELECT DISTINCT returns only distinct (i.e. different) values. The DISTINCT keyword 

  3. Wes

    • 2020/9/20

    SQL SELECT: specific columns. The SELECT command can be used to fetch specific column(s) from a table. Example: To get all values of agent_name, working_area and commission columns from the agents table, the following SQL statement can be used : Sample table: agents

  4. Titan

    • 2016/12/15

    statements and join them by the keyword UNION.

  5. Zahir

    • 2020/4/22

    It will be interesting to compare the speed to this:

    SELECT colnum,colid, min(coldate) as coldate
    FROM testing 
    GROUP BY colnum,colid
    HAVING COUNT(DISTINCT coldate) = 1 
      AND colid = 1
      AND min(coldate) = '2015-01-01'
  6. Blaise

    • 2016/2/20

    There are multiple instances where we have to select the rows and columns from a Pandas DataFrame by multiple conditions. Let’s see a few commonly used approaches to filter rows or columns of a dataframe using the indexing and selection in multiple ways. For example, one can use label based indexing with loc function.

  7. Alan

    • 2018/6/3

    Every SELECT needs a FROM clause according to the SQL standard. variant: values is allowed in the from clause, if the from clause assigns column names: Databases that do not allow select without from usually ship with tables for this 

  8. Ford

    • 2016/9/30

    I would like to select in my dataframe (catch) only the rows for which my "" variable is the same as my "" variable. For example, row #74807 and #74809 in this case would be selected, but not row #74823 because the is "skate" and the is "Northern shrimp".

  9. Bruce

    • 2015/5/19

    Try with this will get the record 111 also.

    select * from testing

    where coldate = '2015-01-01'

    and colid = 1;

    and for the execution time ,you just create a index on that it will increase your execution performance.


  10. Jones

    • 2018/3/5

    how to find duplicate values in one or more columns in MySQL by using pure SQL In the contacts table, we have some rows that have duplicate values in the Then, use the COUNT() function in the HAVING clause to check if any group 

  11. Angelo

    • 2015/12/2

    You can ask the same politely and i will post the code, do not need to be harsh.. select count(ID_NO) as TotalCount from table1 where currentstepname in ('EV','IV') group by ID_NO having count(ID_NO)>1 The above gives me the duplicate count of ID_NO but i want to display the CurrentStepName values as well.

  12. Jordan

    • 2018/2/3

    Select rows with same id but different value in another column. Select I tried for hours and read many posts but I still can't figure out how to handle this request:.

  13. Callahan

    • 2021/8/15

    SELECT count(*), article_title FROM articles GROUP BY article_title HAVING COUNT(*) > 1; Adding columns to the SELECT and GROUP BY clauses allow you to locate duplicates based on a composite key of multiple columns.

  14. Alonso

    • 2016/11/26

    Find all rows that a given value doesn't match a column's value. SELECT <columns> FROM <table> WHERE <column name> != SELECT * FROM contacts WHERE first_name !=

  15. Valentino

    • 2019/9/20

    The following example creates a table where the second integer column contains a null value. Since C# does not allow the promotion of a non-nullable type instance to its nullable type, each row constructor has to cast the values in the column that contains the null to its type’s nullable type:

  16. Kenzo

    • 2017/6/6

    Get code examples like "sql check same value in column" instantly sql select count of duplicate values · how to discard duplicate rows sql 

  17. Bronson

    • 2017/1/23

    Using the wildcard character to select all columns in a query. Get aggregated result for row groups. Select columns which are named after reserved keywords. Select distinct (unique values only) Select Individual Columns. Select rows from multiple tables. SELECT Using Column Aliases.

  18. Cruz

    • 2016/7/17

    The image above demonstrates a formula in cell range B18:B19 that extracts values from column C if the corresponding value in column B is between two given dates and the corresponding value in column A matches a specified value. Update 2020-12-17, the new FILTER function is available for Excel 365 users. Regular formula in cell B18:

  19. Kyler

    • 2018/11/23

    I would guess, probably a COUNT (Distinct ID) with GROUP BY. Something like this: SELECT city, COUNT(DISTINCT LoanApplicationID) as 

  20. Greco

    • 2015/9/22

    The correct rows that are meant to be returned are 11. I seem to be getting 14 using the following: SELECT a.customer_first_name, a.customer_last_name, a.customer_zip FROM customers a UNION SELECT b.customer_first_name, b.customer_last_name, b.customer_zip FROM customers b From here I'm kinda stuck.

  21. Enoch

    • 2019/5/18

    Sql get count of rows with same values in one column. Some people used a different login_id but the same email address, no unique constraint was set on this 

  22. Desmond

    • 2018/7/16

    For this purpose, we cannot have the date range in the SELECT, just the employee number. This is "the same value in one of the columns" as you mentioned in the question. With only the employee number in both the SELECT and GROUP BY, the HAVING clause will work as expected.

  23. Wells

    • 2019/8/9

    Populate Table by rows with same ID and distinct values in column from another table values in another column and could invert it to get the rest, but I do not know Select all of the new columns and convert to True/False.

  24. Koroveshi

    • 2015/3/5

    To select a particular number of rows and columns, you can do the following using.loc. To select a single value from the DataFrame, you can do the following. You can use slicing to select a particular column. To select rows and columns simultaneously, you need to understand the use of comma in the square brackets.

  25. Fabian

    • 2021/7/20

    Select * from table where column = value example. Searching Tables with '​WHERE' | SQL Basics, SQL Used. A WHERE Clause. SELECT <columns> FROM​ 

  26. Ruiz

    • 2018/6/7

    Hi, I am trying to use this code to copy rows to a different sheet column 4 must equal "A". i dont want to use the 3 range cells C13,14 &15 to set the criteria. i have named my source table tbl same as above and is located in sheet1 and i want to copy all the rows that meet the criteria to sheet2.

  27. Johnathan

    • 2021/7/18

    Subsetting in R is easy to learn but hard to master because you need to internalise a number Logical vectors select elements where the corresponding logical value is TRUE . Each row in the matrix specifies the location of one value, and each column corresponds to a Some of the most important are described below.

  28. Sutton

    • 2017/4/24

    My current method is to use queries for each possible category, such as: SELECT COUNT(*) AS num FROM posts WHERE category=#, and then combine the return values into a final array. However, I'm looking for a solution that uses only one query.

  29. Zane

    • 2020/10/7

    Find duplicate values in one column. First, use the GROUP BY clause to group all rows by the target column, which is the column that you want to check duplicate. Then, use the COUNT() function in the HAVING clause to check if any group have more than 1 element. These groups are duplicate.

  30. Ezra

    • 2016/7/16

    hi friends As you see I have the same Num_attachement but two lines me I want to display just one line but with the values of the rows that are different thanks in advance

  31. Evans

    • 2017/12/5

    I know I can roll-up multiple rows into one row using Pivot, but I need all of the data FOR XML Clause for the SQL Server SELECT Statement I've loaded the data into sql but now I want to replace the second row data into 1st row with respective column values. please share it as soon as possible 

  32. Rinaldi

    • 2015/1/7

    The Star symbol is used to select all the columns in table. An example of a simple SELECT statement looks like the one shown below. SELECT * FROM `members`; The above statement selects all the fields from the members table. The semi-colon is a statement terminate. It's not mandatory but is considered a good practice to end your statements like

  33. Will

    • 2017/3/22

    Select rows having 2 columns equal value, Find duplicate rows in sql with Query is select all fist name and column those duplicates with some of other rows​:.

  34. Walker

    • 2018/12/9

    Of course my end result must deliver both count columns in one table (rather than using separate queries as I have done for demonstration purposes). I would like not rely on multiple subqueries because my live example will have more than two columns with counts from the same table but various criteria. I am working with SQL Server (not sure

  35. Jamir

    • 2017/3/2

    hi friends As you see I have the same Num_attachement but two lines me I want to display just one line but with the values ​​of the rows that 

  36. Moretti

    • 2021/9/2

    There have to be two or more rows with the same values. As it stands, your query will return every row (since a row will always match itself). See the questioner's own answer. – Paul White ♦ Aug 4 '13 at 15:28

  37. Lionel

    • 2016/9/24

    Select rows with same id but different value in another column · Sql merge two rows with same id but different column values · Sql query to select multiple rows with 

  38. Finley

    • 2021/9/27

    I only want to select those records that have multiple email values: Member table ID LASTNAME FIRSTNAME EMAIL 567 Jones Carol 567 Jones Carol 678 Black Ted 908 Roberts Cole 908 Roberts Cole 908 Roberts Cole

  39. Seth

    • 2021/3/20

    slice(): Extract rows by position; filter(): Extract rows that meet a certain logical criteria. Filter rows within a selection of variables; Remove missing values; Select random rows from a data frame; Select top n The “logical” comparison operators available in R are: Multiple-column based criteria: Extract rows where Sepal.

  40. Keegan

    • 2015/8/5

    In this post, I focus on using simple SQL SELECT statements to count the number of rows in a table meeting a particular condition with the results grouped by a certain column of the table.

  41. Bear

    • 2020/7/11

    To select multiple values, you can use where clause with OR and IN operator. select *from yourTablename where yourColumnName = value1 or yourColumnName To understand the above syntax, let us create a table.

  42. Rayden

    • 2019/4/2

    The first select would return single value while second select would return multiple values. Basically, for single productId, I want to loop through and insert multiple alias ids. I am getting Subquery returns more than 1 row error

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