Recent questions tagged SQL

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sql server 2008 - dynamic sql error: 'CREATE TRIGGER' must be the first statement in a query batch

As part of some administrative tasks, we have many tables that each need a trigger created. The trigger will set ... Many thanks for any help. 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 - What is the equivalent of XML PATH and Stuff in Linq lambda expression (GROUP_CONCAT/STRING_AGG)?

I am having a table like this : EmployeeId EmployeeName ItemName 4 Ganesh Key Board 4 Ganesh Processor 1 ... Query into Lambda Expression? 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 insert if not exists

I'm very new to SQL, and all I get is error after error, so any help would be appreciated. I have a tags ... http://sqlfiddle.com/#!15/4050a/18 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 - How to make foreign key constraints trusted?

I have two tables, Sale and Product. Sale has a foreign key constraint referencing Product. The foreign ... contact your system administrator. 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 - Foreign Keys - What do they do for me?

I'm building a small application and setting up foreign key relationships between tables. However I'm confused as ... in a database design? 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 - Retrieving column and other metadata information in Teradata

I have a half dozen views in SQL Server that I need to replicate in Teradata, but I haven't ... advertising rather than practical information. 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 - SSRS show value only on last page in body of report

I'm attempting to show a sum in a table footer on a report. It will be in the body of the report and can' ... should still be in the page body. 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 - Get Latest ID from a Duplicate Records in a table

so i have two tables, one is RAWtable and the other is MAINtable, I have to get the latest groupID if there are ... i do this? 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 - Does EXCEPT execute faster than a JOIN when the table columns are the same

To find all the changes between two databases, I am left joining the tables on the pk and using a date_modified ... for when to use EXCEPT. 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 - Foreign key to composite key

I have a problem i need to reference a single foreign key to a composite key in another table. My ... .trip_code and available_trip.date ? See Question&Answers more detail:os...

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

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614 views

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sql - How can a do a "greatest-n-per-group" query in django?

(This is the django version of the thread at SQL join: selecting the last records in a one-to-many ... and without multiple database queries? 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 - Best way to get PK Guid of inserted row

I've read this question about getting the identity of an inserted row. My question is sort of related. ... or SCOPE_IDENTITY for Guids? See Question&Answers more detail:os...

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

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517 views

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sql server - TABLESAMPLE returns wrong number of rows?

I've just discovered the TABLESAMPLE clause but surprisingly it doesn't return the number of rows i've specified. ... is given a random value). See Question&Answers more detail:os...

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

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834 views

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sql - Use google bigquery to build histogram graph

How can write a query that makes histogram graph rendering easier? For example, we have 100 million people with ... to draw the histogram? See Question&Answers more detail:os...

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

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637 views

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sql - ISNUMERIC('07213E71') = True?

SQL is detecting that the following string ISNUMERIC: '07213E71' I believe this is because the 'E' is being classed as ... . 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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747 views

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sql server ce - What is the number of maximum concurrent connections for Sql CE 3.5?

as google does not deliver what i want to know, i try to ask stackoverflow :) what is the number of max ... ce 3.5 database? thanks j. 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 - Are there downsides to using prepared statements?

I've been reading a lot about prepared statements and in everything I've read, no one talks about the ... that people tend to overlook? 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 - Arithmetic overflow error converting expression to data type datetime. (while displaying date time..)

While executing following error is showing declare @yr_mnth_dt as numeric; set @yr_mnth_dt = 20130822; select convert( ... data type datetime. See Question&Answers more detail:os...

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

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998 views

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sql - Laravel foreign key onDelete('cascade') not working

I have a many-to-many relationship between User & Role, with a role_user table. My migrations are setup as so ( ... ); also has the same effect. 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 - The variable name '@' has already been declared. Variable names must be unique within a query batch or stored procedure. in c#

The variable name '@LockState' has already been declared. Variable names must be unique within a query batch or stored ... throw exp; } } } See Question&Answers more detail:os...

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

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558 views

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sql server - Insert manually into a table by SQL statement, but key is autoincremented

Let's say I have a table of users and the id column is the primary key and auto incremented. I want to ... to auto increment. it works 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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516 views

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sql server - How to use If Statement in Where Clause in SQL?

I need to use if statement inside where clause in sql. Select * from Customer WHERE (I.IsClose=@ISClose OR ... the issue. Thanks in advance. See Question&Answers more detail:os...

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

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703 views

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sql - Mysql: Create inline table within select statement?

Is there a way in MySql to create an inline table to use for join? Something like: SELECT LONG [1,2,3] as ID ... 3,'c' with a nicer 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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527 views

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sql - Query featuring outer joins behaves differently in Oracle 12c

I had a problem come through concerning missing data on Oracle 12c. I took a look at the code and found a ... plans. Oracle 11g: Oracle 12c: See Question&Answers more detail:os...

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

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557 views

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sql - insert combine (value and select)

There are ways of inserting data into table: insert into MyTable (ColA, ColB, ColC) values ('A', 'B', ' ... there always 1. THanks for help See Question&Answers more detail:os...

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

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567 views

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sql - Mysql: Selecting values between two columns

I'm trying to select a value between 2 columns. Here is my dataset id from to price 1 0.00 2.00 2. ... . Any help would be much appreciated. See Question&Answers more detail:os...

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

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721 views

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sql - MySQL: How to bulk SELECT rows with multiple pairs in WHERE clause

Let's say I have a table, email_phone_notes that looks like this: +-----------------------+---- ... , or should I stick with this? 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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515 views

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sql server - SQL PIVOT SELECT FROM LIST (IN SELECT)

Is it possible to do a PIVOT and select list from a table, instead of using single values? Like this ( ... do this without using dynamic 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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