Recent questions tagged SQL

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sql - Store mysql query output into a shell variable

I need a variable to hold results retrieved from the database. So far this is basically what I'm trying with no ... very good as you can see. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Getting max value from rows and joining to another table

Sorry if this is being stupid, I am really a newbie trying to nail this. Table A: ID Rank Name 1 100 Name1 1 ... NewA.Rank and A.Id = newA.Id See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Update multiple rows with one query?

I found something that works with updating one field at here: http://www.karlrixon.co.uk/articles/sql/update- ... failed. Any idea? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Mysql, reshape data from long / tall to wide

I have data in a mysql table in long / tall format (described below) and want to convert it to wide format. ... Obama Dollar 1 China Hu Yuan 2 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - The request failed or the service did not respond in a timely fashion?

I have the following error while I connect to SQL Server 2008 Management Studio with Windows authentication. "The ... getting solution.. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - UNION the results of multiple stored procedures

I have a stored procedure I need to call several different times passing in different paramaters each time. I would ... . Thanks for any help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Select data from "show tables" MySQL query

Is it possible to select from show tables in MySQL? SELECT * FROM (SHOW TABLES) AS `my_tables` Something along these ... 5.0.51a, at least). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Replace null with 0 in MySQL

I am getting NULL values in the results of an operation in MySQL. Is there a way to convert the NULL values into the value 0? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - Joining multiple tables in SQL

Can sombody Explains me about joins? Inner join selects common data based on where condition. Left outer join ... help me regarding this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Get the first and last date of next month in MySQL

How can I get the first and last day of next month to be used in the where clause? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

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sql - Select first record in a One-to-Many relation using left join

I'm trying to join two tables using a left-join. And the result set has to include only the first record ... other rows. Please help! Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Oracle: '= ANY()' vs. 'IN ()'

I just stumbled upon something in ORACLE SQL (not sure if it's in others), that I am curious about. I am ... that '= ANY' syntax. CheerZ! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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328 views

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sql - MySQL Select last 7 days

I read some Posts here and seems like nothing special but I can not still select the entries of the last ... Code will not output anything. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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sql server - Difference between #temptable and ##TempTable?

What is the difference between #temptable and ##TempTable in SQL Server? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - Recursive sum in tree structure

I have a tree struture in a single table. The table is a tree of categories that can be nested endlessly. ... should. Any help is appreciated! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

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sql server - Zero SQL deadlock by design - any coding patterns?

I am encountering very infrequent yet annoying SQL deadlocks on a .NET 2.0 webapp running on top of MS SQL ... guaranteed to be deadlock-proof? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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262 views

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sql - Inserting into Oracle and retrieving the generated sequence ID

I have a handful of raw SQL queries for SQL Server which use SCOPE_IDENTITY to retrieve the generated ID for a ... 's the only way possible. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Performance of like '%Query%' vs full text search CONTAINS query

I have a situation where I would like to search a single word. For that scenario, which query would be good ... Col1 CONTAINS(Col1,'Search') ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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294 views

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sql - SQLite Order By Date1530019888000

Every record in my SQLite database contains a field which contains a Date stored as a string in the format ' ... the most recent date please? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - MySQL Select minimum/maximum among two (or more) given values

Is it possible to SELECT the minimum or maximum among two or more values. I'd need something like this: SELECT ... this by only using MySQL? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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269 views

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sql server 2008 - Forcing code-first to always initialize a non-existent database?

Sometimes, I'll delete my development database and run my EF code-first application. I'll get the error: Cannot ... that loads some DB data). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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392 views

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sql server - What’s the best way to bulk database inserts from c#?

How do I/what's the best way to do bulk database inserts? In C#, I am iterating over a collection and calling ... I am using MS SQL Server 2005. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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443 views

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sql - Given an RGB value what would be the best way to find the closest match in the database?

I have a rgb value and if it doesn't exist in the color table in my database I need to find the closest color ... be a better way. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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640 views

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sql server - Cannot bulk load. Operating system error code 5 (Access is denied.)

For some weird reason I'm having problems executing a bulk insert. BULK INSERT customer_stg FROM 'C: ... how to fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Copy table structure to new table in sqlite3

Is there an easy way to copy an existing table structure to a new one? (dont need the data, only the structure -> ... name varchar(20) ...) Thx See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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332 views

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sql server - Database that can handle >500 millions rows

I am looking for a database that could handle (create an index on a column in a reasonable time and provide results ... (attr1), INDEX (attr2) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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461 views

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sql server - SQL - Call Stored Procedure for each record

I am looking for a way to call a stored procedure for each record of a select statement. SELECT @SomeIds = ( ... way to do something like that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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327 views

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sql - TransactSQL to run another TransactSQL script

I have 10 transact SQL scripts that each create a table and fill it with data. I am attempting to create ... Management Studio (SSMS). Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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