大约有 47,000 项符合查询结果（耗时：0.0439秒） [XML]
Filter data.frame rows by a logical condition
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To select rows according to one 'cell_type' (e.g. 'hesc'), use ==:
expr[expr$cell_type == "hesc", ]
To select rows according to two or more different 'cell_type', (e.g. either 'hesc' or 'bj fibroblast'), use %in%:
expr[expr$...
Escaping keyword-like column names in Postgres
...). A delimited identifier is always an
identifier, never a key word. So "select" could be used to refer to a
column or table named "select", whereas an unquoted select would be
taken as a key word and would therefore provoke a parse error when
used where a table or column name is expected.
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What is “android.R.layout.simple_list_item_1”?
...r the individual rows. There are others with checkedtextviews for multiple selections, you can make custom layouts that include images, and multiple textviews for example. These android.R ones are just some easy to use, already created resources for you.
– Kevin Coppock
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How to enable MySQL Query Log?
...global general_log = 1;
SET global log_output = 'table';
View the log
select * from mysql.general_log;
Disable Query logging on the database
SET global general_log = 0;
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How do I check/uncheck all checkboxes with a button using jQuery?
...ecking/unchecking the parent checkbox all the child checkboxes are getting selected/deselected also with the text of parent checkbox getting changed to checkall/uncheckall.
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Best approach to real time http streaming to HTML5 video client
...for the detailed background and pro/cons about the various options. I have selected this answer as the accepted one as the outline of the concepts are more important than the specific fix which I found to answer the original question. Good luck with the bounty!
– deandob
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Find all elements on a page whose element ID contains a certain text using jQuery
... $(this).doStuff();
});
Note the asterisk '*' at the beginning of the selector matches all elements.
See the Attribute Contains Selectors, as well as the :visible and :hidden selectors.
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How to find a table having a specific column in postgresql
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you can query system catalogs:
select c.relname
from pg_class as c
inner join pg_attribute as a on a.attrelid = c.oid
where a.attname = <column name> and c.relkind = 'r'
sql fiddle demo
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SQL- Ignore case while searching for a string
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Use something like this -
SELECT DISTINCT COL_NAME FROM myTable WHERE UPPER(COL_NAME) LIKE UPPER('%PriceOrder%')
or
SELECT DISTINCT COL_NAME FROM myTable WHERE LOWER(COL_NAME) LIKE LOWER('%PriceOrder%')
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What are best practices for multi-language database design? [closed]
... you might be thinking, that instead of writing simple queries like this:
SELECT price, name, description FROM Products WHERE price < 100
...you would need to start writing queries like that:
SELECT
p.price, pt.name, pt.description
FROM
Products p JOIN ProductTranslations pt
ON (p.id = ...