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space between divs - display table-cell

... You can use border-spacing property: HTML: <div class="table"> <div class="row"> <div class="cell">Cell 1</div> <div class="cell">Cell 2</div> </div> </div> CSS: .table { display: table; border-collapse: ...
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Any way to select without causing locking in MySQL?

...h-nolock.aspx in MS SQL Server you would do the following: SELECT * FROM TABLE_NAME WITH (nolock) and the MYSQL equivalent is SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ; SELECT * FROM TABLE_NAME ; SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ ; EDIT Michael Mior sugg...
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SQL/mysql - Select distinct/UNIQUE but return all columns?

... You're looking for a group by: select * from table group by field1 Which can occasionally be written with a distinct on statement: select distinct on field1 * from table On most platforms, however, neither of the above will work because the behavior on the other co...
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updating table rows in postgres using subquery

Using postgres 8.4, My goal is to update existing table: 6 Answers 6 ...
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How to sum a variable by group

...he syntax behind each alternative. For instance, if I have a larger source table and want to subselect just two dimensions plus summed metrics, can I adapt any of these methods? Hard to tell. – Dodecaphone Oct 28 '18 at 10:42 ...
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What is the purpose of setting a key in data.table?

I am using data.table and there are many functions which require me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables. ...
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How to 'insert if not exists' in MySQL?

I started by googling, and found this article which talks about mutex tables. 10 Answers ...
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HTML table headers always visible at top of window when viewing a large table

I would like to be able to "tweak" an HTML table's presentation to add a single feature: when scrolling down through the page so that the table is on the screen but the header rows are off-screen, I would like the headers to remain visible at the top of the viewing area. ...
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Update statement with inner join on Oracle

... That syntax isn't valid in Oracle. You can do this: UPDATE table1 SET table1.value = (SELECT table2.CODE FROM table2 WHERE table1.value = table2.DESC) WHERE table1.UPDATETYPE='blah' AND EXISTS (SELECT table2.CODE ...
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SQL query to find record with ID not in another table

I have two tables with binding primary key in database and I desire to find a disjoint set between them. For example, 6 Ans...