大约有 44,000 项符合查询结果(耗时:0.0265秒) [XML]

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MySQL select one column DISTINCT, with corresponding other columns

I want to select DISTINCT results from the FirstName column, but I need the corresponding ID and LastName . 12 Answe...
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SQL query to find record with ID not in another table

... Try this SELECT ID, Name FROM Table1 WHERE ID NOT IN (SELECT ID FROM Table2) share | improve this answer | ...
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SELECT INTO using Oracle

I'm trying to do a SELECT INTO using Oracle. My query is: 3 Answers 3 ...
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How to select between brackets (or quotes or …) in Vim?

...Computed solution coefficients: As CMS noted, this works for visual mode selection as well - just use vi), vi}, vi', etc. share | improve this answer | follow ...
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Datatype for storing ip address in SQL Server

...VARCHAR(15)) RETURNS BINARY(4) AS BEGIN DECLARE @bin AS BINARY(4) SELECT @bin = CAST( CAST( PARSENAME( @ip, 4 ) AS INTEGER) AS BINARY(1)) + CAST( CAST( PARSENAME( @ip, 3 ) AS INTEGER) AS BINARY(1)) + CAST( CAST( PARSENAME( @ip, 2 ) AS INTEGER) AS BINARY(1)) ...
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PostgreSQL return result set as JSON array?

... TL;DR SELECT json_agg(t) FROM t for a JSON array of objects, and SELECT json_build_object( 'a', json_agg(t.a), 'b', json_agg(t.b) ) FROM t for a JSON object of arrays. List of objects This section de...
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)

...irm this - I just updated a query with 4 joins on a 168,000 row database. Selecting just the first 100 rows with a SQL_CALC_FOUND_ROWS took over 20 seconds; using a separate COUNT(*) query took under 5 seconds (for both count + results queries). – Sam Dufel Ju...
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When to use SELECT … FOR UPDATE?

Please help me understand the use-case behind SELECT ... FOR UPDATE . 2 Answers 2 ...
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Get the Highlighted/Selected text

... Getting the text the user has selected is relatively simple. There's no benefit to be gained by involving jQuery since you need nothing other than the window and document objects. function getSelectionText() { var text = ""; if (window.getSelecti...
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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_...