multiple-columns

问题 i have the same problem here :SQL select rows with only a certain value in them but the solution that i have found work only for one value given, i mean that i want it to work for a number of values {2 or +}, for example : Col 1 Col 2 Col 3 1 A 1 2 A 2 3 B 1 4 C 1 5 C 2 6 D 1 7 C 3 I want to get all rows that just contain cols3 = 1 and cols3 =2 ONLY , (just values 1 and 2) and the output will be : "A" for the table given, i dont want to have C because it has another values of cols 3 != of 1

问题 CriteriaBuilder.countDistinct(Expression e) It takes one expression only. How to count distinct multiple expressions? For example, Country Language ------------------------------- In JPA CriteriaQuery, how to count different pairs of (country, language)? Thanks, 回答1: You cannot do that with JPQL. JPQL BNF is very clear aggregate_expression ::= { AVG | MAX | MIN | SUM } ([DISTINCT] state_field_path_expression) | COUNT ([DISTINCT] identification_variable | state_field_path_expression | single

问题 I have to select id from GraphNodes whereas same id exists in GraphEdges in two columns i.e. Source_Node and Target_Node . The structure of tables are as follows: GraphNodes +---+---------+-------------------+------------+-----------+ | id | Node_ID | Node | Node_Label | Node_Type | +---+---------+-------------------+------------+-----------+ | 1 | 677 | Nuno Vasconcelos | Author | 1 | | 2 | 1359 | Peng Shi | Author | 1 | | 3 | 6242 | Z. Q. Shi | Author | 1 | +----+---------+-----------------

问题 I have the following class: public class MyDimension { public MyDimension() { obcItemsName = new ObservableCollection<string>(); obcItemsMeasured = new ObservableCollection<double>(); } public string NameAxisDimension { get; set; } public double Nominal { get; set; } public double UpperTolerance { get; set; } public double LowerTolerance { get; set; } public ObservableCollection<string> obcItemsName; public ObservableCollection<double> obcItemsMeasured; } and its instances are stored into:

问题 I bought a wordpress template and try to modify the codes in the brand page to display 3 columns. below is the scenario: Currently Display: a | b | c | d e | f | g | h i | j | k I want the display to Becomes a | d | g b | e | h c | f | i The codes below display the current one. Can anyone help me to correct the codes below to display the above scenario. CODES: <?php $args = array( 'post_type' => 'partner', 'posts_per_page' => '-1', 'order' => 'ASC', 'post__not_in' => array( $post->ID ) ); //

问题 selectbox with multiple columns from mysql database The following code was the winning code from zgr024 <?php include '../config.php'; $sql = "SELECT * FROM megabase"; $resultaat = mysql_query($sql) or die (mysql_error()); $domains = array(); while ($row = mysql_fetch_array($resultaat)) { if (!empty($row['domeinnaam1'])) $domains[] = $row['domeinnaam1']; if (!empty($row['domeinnaam2'])) $domains[] = $row['domeinnaam2']; } ?> <select size="1" name="domeinnaam"> <?php foreach ($domains as

问题 This is a followup question for this one: how to select/add a column to pandas dataframe based on a function of other columns? have a data frame and I want to select the rows that match some criteria. The criteria is a function of values of other columns and some additional values. Here is a toy example: >> df = pd.DataFrame({'A': [1,2,3,4,5,6,7,8,9], 'B': [randint(1,9) for x in xrange(9)], 'C': [4,10,3,5,4,5,3,7,1]}) >> A B C 0 1 6 4 1 2 8 10 2 3 8 3 3 4 4 5 4 5 2 4 5 6 1 5 6 7 1 3 7 8 2 7 8

问题 I am trying to format a group of columns in python 3. So far I have not had much luck. This is the code I am using. first_row = ['Indicator',':Min',':Max'] col_width = max(len(word) for word in first_row) +20# padding print ("".join(word.ljust(col_width) for word in first_row)) print('----------------------------------------------------------------------------') heart=['Heart Disease Death Rate (2007)',stateheart_min(),heartdis_min(),stateheart_max(),heartdis_max()] motor=[ 'Motor Vehicle

问题 Rows & columns, baby. Rows & columns. Within one table: When a User adds a new :name & :metric I want it to create a new column. When a User adds a new :result_value & :date_value I want it to create a new row. This is what my table currently looks like: For the life of me I can't figure out why something that seems so elementary is so difficult. I don't know if I'm suppose to create the rows and columns in the database, model, helper or index view and/or if I should be using some other

问题 http://i.stack.imgur.com/53tz0.jpg is the images. Hello I would like to modify this code, so it understands multiple values. the best I came was the barcode scanner, I'm a novice in vba but I really enjoy it. this is a fun project that I do so please help me. Thanks guys. Private Sub Worksheet_Change(ByVal Target As Range) Const SCAN_CELL As String = "A1" Const RANGE_BC As String = "A5:A500" Dim val, f As Range, rngCodes As Range If Target.Cells.Count > 1 Then Exit Sub If Intersect(Target, Me