multiple-columns

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Upper limit to number of columns I can JOIN two tables on in MySQL?

Is there a 开发者_开发百科limit to the number of columns I can JOIN two tables on in MySQL?To the extent that there is a limit on the size of an SQL statement, then Yes: you cannot create an SQL state[详细]

2023-01-04 23:19 分类：问答
SQL Server: "Mostly-unique" index

In a table i want to ensure that only uni开发者_运维知识库que vales exist over the five-column key:[详细]

2022-12-29 21:52 分类：问答
How do I Put Several Select Statements into Different Columns

I basically have 7 select statements that I need to have the results output into separate columns.Normally I would use a crosstab for this but I need a fast efficient way to go about this as there are[详细]

2022-12-23 04:30 分类：问答
Sort multiple columns while using a bindingsource or bindinglist

I have a problem I am trying to fix and it\'s sorting a DataGridView on multiple columns. I have read that this option is not a feature built-in the DataGridView and I have to implement it. I have fou[详细]

2022-12-22 19:20 分类：问答
mysql keyword search across multiple columns

Various incarnations of this question have been asked here before, but I thought I\'d give it another shot.[详细]

2022-12-12 23:58 分类：问答
CSS: two colums (fixed/fluid) - same height [duplicate]

This question already has answers here: How do I keep two side-by-side div elements the sam开发者_StackOverflowe height?[详细]

2022-12-12 12:46 分类：问答
BindingSource.Find Multiple Columns

Is it possible to use the Find method of a BindingSource on multiple columns? For example, say I have a gridview displaying current pets; two comboboxes, cboPetType and cboGender; and a button to cre[详细]

2022-12-11 19:21 分类：问答
DataSet and Primary Key with multiple columns

How Can I use Find method in DataSet that has Primary Key make of 3 Columns? dadSample.SelectCommand = New SqlCommand(\"SELECT * FROM StockBalance\", conxMain)[详细]

2022-12-11 01:17 分类：问答
How do I overflow the contents of a column into the next column using XSL-FO?

I have a table with three columns in which I\'m trying to get some long paragraphs to flow dynamically from the first column into the second and then into the third. Currently, the table will continue[详细]

2022-12-10 18:43 分类：问答
amino acid composition_CSV_columnwise

Sample file: Column 10: A|Y|E|A Column 11: W|I|Q|Q How do I calculate amino acid composition (percentage) specific to each column?[详细]

2022-12-07 20:27 分类：问答