大约有 3,549 项符合查询结果（耗时：0.0204秒） [XML]
1052: Column 'id' in field list is ambiguous
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SQL supports qualifying a column by prefixing the reference with either the full table name:
SELECT tbl_names.id, tbl_section.id, name, section
FROM tbl_names
JOIN tbl_section ON tbl_section.id = tbl_names.id
...or a ta...
How can I solve a connection pool problem between ASP.NET and SQL Server?
...he code between .Open and Close throws an exception:
var connection = new SqlConnection(connectionString);
connection.Open();
// some code
connection.Close();
The correct way would be this:
var connection = new SqlConnection(ConnectionString);
try
{
connection.Open();
s...
sql query to return differences between two tables
I am trying to compare two tables, SQL Server, to verify some data. I want to return all the rows from both tables where data is either in one or the other. In essence, I want to show all the discrepancies. I need to check three pieces of data in doing so, FirstName, LastName and Product.
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How to use NULL or empty string in SQL
...ow to use NULL and an empty string at the same time in a WHERE clause in SQL Server. I need to find records that have either null values or an empty string. Thanks.
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DBMS_OUTPUT.PUT_LINE not printing
...e executes. Most tools, on the other hand, have the ability to do so. In SQL*Plus, you'd need to use the command set serveroutput on [size N|unlimited]. So you'd do something like
SQL> set serveroutput on size 30000;
SQL> exec print_actor_quotes( <<some value>> );
In SQL Deve...
How to rename a table in SQL Server?
The SQL query that I have used is :
8 Answers
8
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What does SQL clause “GROUP BY 1” mean?
Someone sent me a SQL query where the GROUP BY clause consisted of the statement: GROUP BY 1 .
6 Answers
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SQL-Server: The backup set holds a backup of a database other than the existing
I am trying to restore a SQL Server backup file for my database, but it is throwing an error as follow:
24 Answers
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“The certificate chain was issued by an authority that is not trusted” when connecting DB in VM Role
I am experiencing error when connecting MY DB which is in VM Role(I have SQL VM Role) from Azure Website. Both VM Role and Azure Website are in West zone. I am facing following issue:
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
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If you're using SQL Server 2005, you could use the FOR XML PATH command.
SELECT [VehicleID]
, [Name]
, (STUFF((SELECT CAST(', ' + [City] AS VARCHAR(MAX))
FROM [Location]
WHERE (VehicleID = Vehicle.VehicleID)
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