Merge pull request #42 from Azure-Samples/sqlextension

Adding the microsoft.rpad function to the Synapse SQL Extension toolkit

Author: Matt Usher

SQL/Extension/deploy.bat

@@ -54,6 +54,7 @@ sqlcmd -S %_server% -d %_database% -U %_username% -P %_password% -I -i .\functio
 sqlcmd -S %_server% -d %_database% -U %_username% -P %_password% -I -i .\functions\microsoft.lpad.sql
 sqlcmd -S %_server% -d %_database% -U %_username% -P %_password% -I -i .\functions\microsoft.months_between.sql
 sqlcmd -S %_server% -d %_database% -U %_username% -P %_password% -I -i .\functions\microsoft.next_day.sql
+sqlcmd -S %_server% -d %_database% -U %_username% -P %_password% -I -i .\functions\microsoft.rpad.sql
 
 ECHO Deploying views
 

SQL/Extension/functions/microsoft.rpad.sql

@@ -0,0 +1,18 @@
+IF EXISTS (SELECT * FROM sys.objects WHERE schema_id=SCHEMA_ID('microsoft') AND name = N'rpad')
+    DROP FUNCTION microsoft.rpad;
+GO
+
+CREATE FUNCTION microsoft.rpad(@expression VARCHAR(MAX), @length INT, @fill VARCHAR(64) = ' ')
+RETURNS VARCHAR(MAX)
+WITH SCHEMABINDING
+AS
+BEGIN
+
+	RETURN
+		CASE
+			WHEN (@length <= DATALENGTH(@expression)) THEN LEFT(@expression, @length)
+			ELSE @expression + LEFT(REPLICATE(@fill, @length), ABS(@length - DATALENGTH(@expression)))
+		END
+
+END
+GO