Recent questions tagged SQL

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sql server - Sql serve Full Text Search with Containstable is very slow when Used in JOIN!

I am using sql 2008 full text search and I am having serious issues with performance depending on how I use ... be fast. Any ideas? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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368 views

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sql server - Current transaction ID in an audit trigger

I was looking at storing some form of transaction id from an audit trigger. The solution appeared to be to ... is impersonating a database user. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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401 views

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sql server - How can I make "month" columns in Sql?

I've got a set of data that looks something like this (VERY simplified): productId Qty dateOrdered --------- -- ... , but this guy is dog slow. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - MySQL Nested Sets - How to find parent of node?

I have your run of the mill nested set hierarchy type setup with the following columns: table name: myset ... moving anything within the set. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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sql - How do I generate a series of hourly averages in MySQL?

I've got data in ten minutes intervals in my table: 2009-01-26 00:00:00 12 2009-01-26 00:10:00 1.1 2009-01 ... it should return: 5.42 8.87 etc. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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417 views

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sql - Select statement in SQLite recognizing row number

I want to write SQLite statement something like this: SELECT * FROM Table WHERE RowNumber BETWEEN 1 AND 10; ... bookmarks please share. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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356 views

1 answer

sql - Joining 100 tables

Assume that I have a main table which has 100 columns referencing (as foreign keys) to some 100 tables ( ... Normalizing an extremely big table See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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383 views

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sql server - Repeatable Read - am I understanding this right?

Trying to completely understand SQL Server Isolation Levels - notably REPEATABLE READ. I have a sproc that starts a transaction ... is - am I?! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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328 views

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sql - Using same column multiple times in WHERE clause

I have a following table structure. USERS PROPERTY_VALUE PROPERTY_NAME USER_PROPERTY_MAP I am trying to retrieve user/ ... missing 'property2'. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

328 views

1 answer

sql server - Sql serve Full Text Search with Containstable is very slow when Used in JOIN!

I am using sql 2008 full text search and I am having serious issues with performance depending on how I use ... be fast. Any ideas? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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453 views

1 answer

sql server 2005 - How to split a string in T-SQL?

I have a varchar @a='a|b|c|d|e|f|g|h|i|j|k|l|m|n|o|p', which has | delimited values. I want to split ... a array or a table. How can I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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603 views

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sql server - C# / SQL Listener to tell me if a row has been inserted into a table

Can someone post sample code or tell me how to set up a listener to notify me (trigger an event) if a new ... do the same for a database table. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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421 views

1 answer

sql - Oracle: getting maximum value of a group?

Given a table like this, what query will the most recent calibration information for each monitor? In other words, I ... 17 2 2012/01/02 19 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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410 views

1 answer

sql - hierarchical sum in PostgreSQL

This is a simplified version of a problem I am encountering in PostgreSQL. I have the following ... utilizing PostgreSQL-specific extensions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

397 views

1 answer

sql server - Current transaction ID in an audit trigger

I was looking at storing some form of transaction id from an audit trigger. The solution appeared to be to ... is impersonating a database user. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

375 views

1 answer

sql server - How can I make "month" columns in Sql?

I've got a set of data that looks something like this (VERY simplified): productId Qty dateOrdered --------- -- ... , but this guy is dog slow. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

434 views

1 answer

sql - MySQL Nested Sets - How to find parent of node?

I have your run of the mill nested set hierarchy type setup with the following columns: table name: myset ... moving anything within the set. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

367 views

1 answer

sql - How do I generate a series of hourly averages in MySQL?

I've got data in ten minutes intervals in my table: 2009-01-26 00:00:00 12 2009-01-26 00:10:00 1.1 2009-01 ... it should return: 5.42 8.87 etc. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

472 views

1 answer

sql - Select statement in SQLite recognizing row number

I want to write SQLite statement something like this: SELECT * FROM Table WHERE RowNumber BETWEEN 1 AND 10; ... bookmarks please share. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

358 views

1 answer

sql - Joining 100 tables

Assume that I have a main table which has 100 columns referencing (as foreign keys) to some 100 tables ( ... Normalizing an extremely big table See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

420 views

1 answer

sql server - Repeatable Read - am I understanding this right?

Trying to completely understand SQL Server Isolation Levels - notably REPEATABLE READ. I have a sproc that starts a transaction ... is - am I?! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

316 views

1 answer

sql - Using same column multiple times in WHERE clause

I have a following table structure. USERS PROPERTY_VALUE PROPERTY_NAME USER_PROPERTY_MAP I am trying to retrieve user/ ... missing 'property2'. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

374 views

1 answer

sql server - Sql serve Full Text Search with Containstable is very slow when Used in JOIN!

I am using sql 2008 full text search and I am having serious issues with performance depending on how I use ... be fast. Any ideas? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

408 views

1 answer

sql - Checking whether an item does not exist in another table

My tables are set up something like this: table name: process fields: name, id_string table name: value_seach fields: ... How do I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

431 views

1 answer

sql - Calculate the difference between results of two count(*) queries based on 2 tables in PostgreSQL

I want to calculate the difference between the results of 2 count(*)-type SELECT queries executed on 2 separate ... val2-val1; Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

464 views

1 answer

sql - MySQL CAST as DATE

I'm trying to understand what casting a value to the DATE type in MySQL does. Here are some things I have tried: ... ) and CAST(expr AS TIME). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

1 answer

sql server - what are the advantages of defining a foreign key

What is the advantage of defining a foreign key when working with an MVC framework that handles the relation? I' ... the use of them altogether? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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731 views

1 answer

sql server 2008 - SQL error: 'CREATE/ALTER PROCEDURE' must be the first statement in a query batch

I am running a SQL script but getting an error: 'CREATE/ALTER PROCEDURE' must be the first statement in a query ... GO How can I solve it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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