I had same question, and after reading all answers here I definitely stay with SINGULAR, reasons: Reason 1 (Concept). You can think of bag containing apples like “AppleBag”, it doesn’t matter if contains 0, 1 or a million apples, it is always the same bag. Tables are just that, containers, the table name must describe … Read more
The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. SELECT CAST( CASE WHEN Obsolete=”N” or InStock = ‘Y’ THEN 1 ELSE 0 END AS bit) as Saleable, * FROM Product You only need to use the CAST operator if you want the result as a … Read more
You can use OPENROWSET for this. Have a look. I’ve also included the sp_configure code to enable Ad Hoc Distributed Queries, in case it isn’t already enabled. CREATE PROC getBusinessLineHistory AS BEGIN SELECT * FROM sys.databases END GO sp_configure ‘Show Advanced Options’, 1 GO RECONFIGURE GO sp_configure ‘Ad Hoc Distributed Queries’, 1 GO RECONFIGURE GO … Read more
In SQL Server 2008 you can insert multiple rows using a single SQL INSERT statement. INSERT INTO MyTable ( Column1, Column2 ) VALUES ( Value1, Value2 ), ( Value1, Value2 ) For reference to this have a look at MOC Course 2778A – Writing SQL Queries in SQL Server 2008. For example: INSERT INTO MyTable … Read more
As per the documentation: FROM (Transact-SQL): <join_type> ::= [ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [ <join_hint> ] ] JOIN The keyword OUTER is marked as optional (enclosed in square brackets). In this specific case, whether you specify OUTER or not makes no difference. Note … Read more
SQL Server 2005 onwards: IF EXISTS(SELECT 1 FROM sys.columns WHERE Name = N’columnName’ AND Object_ID = Object_ID(N’schemaName.tableName’)) BEGIN — Column Exists END Martin Smith’s version is shorter: IF COL_LENGTH(‘schemaName.tableName’, ‘columnName’) IS NOT NULL BEGIN — Column Exists END
If you are on SQL Server 2017 or Azure, see Mathieu Renda answer. I had a similar issue when I was trying to join two tables with one-to-many relationships. In SQL 2005 I found that XML PATH method can handle the concatenation of the rows very easily. If there is a table called STUDENTS SubjectID … Read more
Syntax: ALTER TABLE {TABLENAME} ADD {COLUMNNAME} {TYPE} {NULL|NOT NULL} CONSTRAINT {CONSTRAINT_NAME} DEFAULT {DEFAULT_VALUE} WITH VALUES Example: ALTER TABLE SomeTable ADD SomeCol Bit NULL –Or NOT NULL. CONSTRAINT D_SomeTable_SomeCol –When Omitted a Default-Constraint Name is autogenerated. DEFAULT (0)–Optional Default-Constraint. WITH VALUES –Add if Column is Nullable and you want the Default Value for Existing Records. Notes: … Read more