Should I use != or <> for not equal in T-SQL? - Stack Overflow
2009年4月6日 · Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL …
SQL: IF clause within WHERE clause - Stack Overflow
2008年9月18日 · Is it possible to use an IF clause within a WHERE clause in MS SQL? Example: WHERE IF IsNumeric(@OrderNumber) = 1 OrderNumber = @OrderNumber ELSE …
sql - Count work days between two dates - Stack Overflow
2008年10月31日 · How can I calculate the number of work days between two dates in SQL Server? Monday to Friday and it must be T-SQL.
sql - Incorrect syntax near '' - Stack Overflow
I'm trying to run the following fairly simple query in SQL Server Management Studio: SELECT TOP 1000 * FROM master.sys.procedures as procs left join master.sys.parameters as params …
How do I perform an IF...THEN in an SQL SELECT?
2008年9月15日 · 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 …
sql - Exclude a column using SELECT * [except columnA] FROM …
We all know that to select all columns from a table, we can use SELECT * FROM tableA Is there a way to exclude column(s) from a table without specifying all the columns? SELECT * [except …
sql - Delete duplicate rows keeping the first row - Stack Overflow
2017年7月3日 · 10 To delete the duplicate rows from the table in SQL Server, you follow these steps: Find duplicate rows using GROUP BY clause or ROW_NUMBER () function. Use …
How to calculate percentage with a SQL statement
Due to precedence of SQL statements it will be the same. however, due to data types if using 100 you can still get the result rounded to 0 decimals you desire for the % where as if you put it …
DB2 SQL error: SQLCODE: -206, SQLSTATE: 42703 - Stack Overflow
2016年8月16日 · I am getting this JDBC exception. I googled it but the explanation was very abstract. DB2 SQL error: SQLCODE: -206, SQLSTATE: 42703 …
SQL Server: The certificate chain was issued by an authority that is ...
2023年2月19日 · SQL Server: The certificate chain was issued by an authority that is not trusted [duplicate] Asked 2 years, 6 months ago Modified 1 year, 3 months ago Viewed 36k times