大约有 46,000 项符合查询结果(耗时:0.0656秒) [XML]

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MySQL selecting yesterday's date

...get yesterday's date is: subdate(current_date, 1) Your query would be: SELECT url as LINK, count(*) as timesExisted, sum(DateVisited between UNIX_TIMESTAMP(subdate(current_date, 1)) and UNIX_TIMESTAMP(current_date)) as timesVisitedYesterday FROM mytable GROUP BY 1 For the ...
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Table name as variable

...mpare data between the same tables of different databases: static query: SELECT * FROM [DB_ONE].[dbo].[ACTY] EXCEPT SELECT * FROM [DB_TWO].[dbo].[ACTY] since I want easily change tha name of table and schema I have created this dynamic query: declare @schema varchar(50) declare @table varchar(5...
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DISTINCT for only one column

... If you are using SQL Server 2005 or above use this: SELECT * FROM ( SELECT ID, Email, ProductName, ProductModel, ROW_NUMBER() OVER(PARTITION BY Email ORDER BY ...
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How to select from subquery using Laravel Query Builder?

... Note that if you have a complex query as a belongsToMany as subselect you have to add getQuery() twice => $sub->getQuery()->getQuery() – Jordi Puigdellívol Aug 28 '15 at 14:23 ...
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SQL statement to select all rows from previous day

I am looking for a good SQL Statement to select all rows from the previous day from one table. The table holds one datetime column. I am using SQL Server 2005. ...
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MySQL: determine which database is selected?

After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected"). ...
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How to drop all tables in a SQL Server database?

...VARCHAR(500) DECLARE @Cursor CURSOR SET @Cursor = CURSOR FAST_FORWARD FOR SELECT DISTINCT sql = 'ALTER TABLE [' + tc2.TABLE_SCHEMA + '].[' + tc2.TABLE_NAME + '] DROP [' + rc1.CONSTRAINT_NAME + '];' FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc1 LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS t...
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How to do a FULL OUTER JOIN in MySQL?

...MPLE transcribed from this SO question you have: with two tables t1, t2: SELECT * FROM t1 LEFT JOIN t2 ON t1.id = t2.id UNION SELECT * FROM t1 RIGHT JOIN t2 ON t1.id = t2.id The query above works for special cases where a FULL OUTER JOIN operation would not produce any duplicate rows. The quer...
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How do I use variables in Oracle SQL Developer?

... other stuff didn't work for me, but this did: define value1 = 'sysdate' SELECT &&value1 from dual; Also it's the slickest way presented here, yet. (If you omit the "define"-part you'll be prompted for that value) ...
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Select row with most recent date per user

... Query: SQLFIDDLEExample SELECT t1.* FROM lms_attendance t1 WHERE t1.time = (SELECT MAX(t2.time) FROM lms_attendance t2 WHERE t2.user = t1.user) Result: | ID | USER | TIME | IO | ---------------------------...