大约有 40,000 项符合查询结果(耗时:0.0530秒) [XML]

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How do I modify fields inside the new PostgreSQL JSON datatype?

With postgresql 9.3 I can SELECT specific fields of a JSON data type, but how do you modify them using UPDATE? I can't find any examples of this in the postgresql documentation, or anywhere online. I have tried the obvious: ...
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Select n random rows from SQL Server table

I've got a SQL Server table with about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and ...
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Can you have if-then-else logic in SQL? [duplicate]

I need to do select data from a table based on some kind of priority like so: 7 Answers ...
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Select first row in each GROUP BY group?

As the title suggests, I'd like to select the first row of each set of rows grouped with a GROUP BY . 17 Answers ...
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Why are Where and Select outperforming just Select?

... Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation. Where+Select creates an iterator that skips invalid elements (doesn't yield them), perform...
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Selecting text in an element (akin to highlighting with your mouse)

I would like to have users click a link, then it selects the HTML text in another element ( not an input). 16 Answers ...
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How can I list ALL grants a user received?

...ust direct table grants (e.g., grants via roles, system privileges such as select any table, etc.), here are some additional queries: System privileges for a user: SELECT PRIVILEGE FROM sys.dba_sys_privs WHERE grantee = <theUser> UNION SELECT PRIVILEGE FROM dba_role_privs rp JOIN role_...
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Working with select using AngularJS's ng-options

...o work... note the ng-model="blah" which is saying "set $scope.blah to the selected value". Try this: <select ng-model="blah" ng-options="item.ID as item.Title for item in items"></select> Here's more from AngularJS's documentation (if you haven't seen it): for array data sources...
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postgresql return 0 if returned value is null

...eved for display. Edit Here's an example of COALESCE with your query: SELECT AVG( price ) FROM( SELECT *, cume_dist() OVER ( ORDER BY price DESC ) FROM web_price_scan WHERE listing_Type = 'AARM' AND u_kbalikepartnumbers_id = 1000307 AND ( EXTRACT( DAY FROM ( NOW() - ...
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Remove border radius from Select tag in bootstrap 3

...s gone, you have to add back in the arrow that visually differentiates the select from the input. Note: appearance is not supported in IE. Working example: https://jsfiddle.net/gs2q1c7p/ select:not([multiple]) { -webkit-appearance: none; -moz-appearance: none; background-positio...