Sql
Structured Query Language (SQL) is a language for querying databases. Questions should include code examples, table structure, sample data, and a tag for the DBMS implementation (e.g. MySQL, PostgreSQL, Oracle, MS SQL Server, IBM DB2, etc.) being used. If your question relates solely to a specific DBMS (uses specific extensions/features), use that DBMS's tag instead. Answers to questions tagged with SQL should use ISO/IEC standard SQL.
63
votes
16
answers
2.6K
views
How can I do an UPDATE statement with JOIN in SQL Server?
I need to update this table in SQL Server with data from its 'parent' table, see below: Table: sale
63
votes
15
answers
385
views
How can I delete using INNER JOIN with SQL Server?
I want to delete using INNER JOIN in SQL Server 2008. But I get this error: Msg 156, Level 15, State 1, L
54
votes
22
answers
1.2K
views
What is the difference between UNION and UNION ALL?
What is the difference between UNION and UNION ALL?
52
votes
28
answers
2.1K
views
Insert into ... values ( SELECT ... FROM ... )
I am trying to INSERT INTO a table using the input from another table. Although this is entirely feasible for
55
votes
18
answers
1.4K
views
Select first row in each GROUP BY group?
As the title suggests, I'd like to select the first row of each set of rows grouped with a GROUP BY. Spec
57
votes
30
answers
1.9K
views
How do I perform an IF...THEN in an SQL SELECT?
How do I perform an IF...THEN in an SQL SELECT statement? For example: SELECT IF(Obsolete = 'N' OR
49
votes
30
answers
1.3K
views
How to query MongoDB with "like"
I want to query something with SQL's like query: SELECT * FROM users WHERE name LIKE '%m%' Ho
62
votes
30
answers
1.3K
views
Insert results of a stored procedure into a temporary table
How do I do a SELECT * INTO [temp table] FROM [stored procedure]? Not FROM [Table] and without defining [temp
60
votes
30
answers
2.9K
views
How to return only the Date from a SQL Server DateTime datatype
SELECT GETDATE() Returns: 2008-09-22 15:24:13.790 I want that date part without the time part: 2008-09-22 0
67
votes
30
answers
890
views
How to concatenate text from multiple rows into a single text string in SQL Server
Consider a database table holding names, with three rows: Peter Paul Mary Is there an easy way to turn this i
57
votes
30
answers
751
views
Finding duplicate values in a SQL table
It's easy to find duplicates with one field: SELECT name, COUNT(email) FROM users GROUP BY email HAVING
50
votes
30
answers
1.3K
views
How do I import an SQL file using the command line in MySQL?
I have a .sql file with an export from phpMyAdmin. I want to import it into a different server using the comma
63
votes
30
answers
408
views
Add a column with a default value to an existing table in SQL Server
How can I add a column with a default value to an existing table in SQL Server 2000 / SQL Server 2005?
61
votes
30
answers
1.7K
views
How do I UPDATE from a SELECT in SQL Server?
In SQL Server, it is possible to insert rows into a table with an INSERT.. SELECT statement: INSERT INTO Table
60
votes
27
answers
2.9K
views
What is the difference between "INNER JOIN" and "OUTER JOIN"?
Also how do LEFT JOIN, RIGHT JOIN and FULL JOIN fit in?
