Recent questions tagged SQL

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sql - MySQL: How to find leaves in specific node

I know this kind questions has been posted here many times, for exmaple: Java way I have huge amount of data ( ... =utf Database: MySQL 5.1.61 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 server ce - Cascade Delete Rule in EF 4.1 Code First when using Shared Primary Key Association

I implemented a bidirectional 1:1 relationship based on this answer: Primary /Foreign Key in Entity ... have bidirectional properties. 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 server 2008 - SQL: Error, Expression services limit reached?

"Internal error: An expression services limit has been reached. Please look for potentially complex expressions in ... the error message above. 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: UPDATE table with COUNT from another table?

I thought this would be simple but I can't get my head around it... I have one table tbl1 and it has ... tbl2 WHERE id=tbl1.id) Any ideas? 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 server - Get audit history records of any entity record as per CRM view

I want to display all audit history data as per MS CRM format. I have imported all records from AuditBase table ... sql table(Not CRM database). See Question&Answers more detail:os...

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

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367 views

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sql - MySQL Date Between

FIXED - this is what I have now - Written in ASP If Session("dateRange") = "Today" Then fromDate = Date() ... ). Can anybody see what is wrong? 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 - Difference between NULL and Blank Value in Mysql

I have to check for a value of a particular Column named RESULT is blank or not. When I check with if RESULT ... HLABNO and a.RESULT is NULL; " 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 server - Python - pyodbc call stored procedure with parameter name

I need to call a SqlServer stored procedure from python2.7 via pyodbc module with input parameter name. I tried ... What's the correct syntax? 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 - INSERT INTO ... FROM SELECT ... RETURNING id mappings

I'm using PostgreSQL 9.3. I want to duplicate some of the db records. Since I'm using an auto-increment pk id ... to make it work? Thanks a lot! 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 server - Insert multiple rows of default values into a table

I have a table with a single column, which is an auto-generated identity create table SingleIdTable ( id ... the definition of SomeOtherTable. See Question&Answers more detail:os...

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

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298 views

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sql server - T-SQL - GROUP BY with LIKE - is this possible?

Is there a way to include a LIKE expression in a GROUP BY query? For example: SELECT Count(*) FROM ... ---- Fall_2009 2 Spring_2009 1 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 - Is order in a subquery guaranteed to be preserved?

I am wondering in particular about PostgreSQL. Given the following contrived example: SELECT name FROM (SELECT name ... for the inner query? See Question&Answers more detail:os...

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

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438 views

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sql - Exec stored procedure into dynamic temp table

To my knowledge; what I want to do is not possible in sql, but it is worth asking you guys. ... tempTable Which obviously failed miserably. 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 - PostgreSQL query to detect overlapping time ranges

I have a table in PostgreSQL 9.2 that looks like this (simplified): CREATE TABLE my_features ( id integer NOT NULL ... seem to find it just now. 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 - Negative Primary Keys

Are there any repercussions using Negative Primary Keys for tables (Identity Increment -1, Identity Seed -1 in ... identities don't overlap. See Question&Answers more detail:os...

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

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465 views

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sql - Implement Rank without using analytic function

I am wondering if there is a method to implement SQL analytic functions without using the inbuilt functions. SELECT *, ... ) AS rnk FROM emp; See Question&Answers more detail:os...

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

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393 views

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sql server - How do you do Multiple Inner Joins in Linq to Entities

I have already searched through SO and could not fins a workable solution for this. I am just trying to figure ... in Linq to Entities. 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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359 views

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sql server 2005 - How to change every nvarchar column to varchar?

what would be the simplest way to change every nvarchar column in a database to a varchar? I personally would ... that varchar must be used. See Question&Answers more detail:os...

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

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478 views

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sql - Select random row for each group

I have a table like this ID ATTRIBUTE 1 A 1 A 1 B 1 C 2 B 2 C 2 C 3 A 3 B 3 C I'd like to ... is a bit cumbersome. Do you have a better one? 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 - Exception ORA-08103: object no longer exists on using setfetchsize of Hibernate

I'm using Hibernate. I need to fetch around 1000000 records and it will cause timeout exception. So I'm using ... . 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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560 views

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sql server - Visual Studio Code Map: Unable to connect to the specified database

I can't use Code Map in Visual Studio due to this error: Unable to connect to the specified database. An exception ... . How to fix the problem? See Question&Answers more detail:os...

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

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354 views

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sql - Using a HAVING clause in an UPDATE statement

This query SELECT FirstName, LastName, NCAAStats.AccountId, College_Translator.school_name, StatTypeId, COUNT(*) AS ' ... SERVER 2008 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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326 views

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sql - PostgreSQL incorrect sorting

I use PostgreSQL 9.3.3 and I have a table with one column named as title (character varying(50)). When I ... " should be in the second position. See Question&Answers more detail:os...

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

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364 views

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sql server - Does the `nodes()` method keep the document order?

Does the nodes() method of the xml data type return nodes in document order? For example, if there are data like ... (), or is it exceptional? See Question&Answers more detail:os...

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

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636 views

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sql server - LINQ to SQL Every Nth Row From Table

Anybody know how to write a LINQ to SQL statement to return every nth row from a table? I'm needing to get the ... to use to get the right SQL. 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

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sql - Clean way to use postgresql window functions in django ORM?

I'd like to use postgresql window functions like rank() and dense_rank in some queries in need to do in ... on django.contrib.postgres features) See Question&Answers more detail:os...

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

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370 views

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sql - Assigning a variable inside an IF EXISTS clause

Trying to assign a variable inside an if exists clause for TSQL DECLARE @myvar int IF EXISTS (SELECT @myvar = theTable. ... I'm doing it wrong. 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 - Difference between N'String' vs U'String' literals in Oracle

What is the meaning and difference between these queries? SELECT U'String' FROM dual; and SELECT N'String' FROM dual; See Question&Answers more detail:os...

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

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