Initial data commit

Task/Middle-three-digits/SQL/middle-three-digits.sql

@@ -0,0 +1,12 @@
+;WITH DATA
+     AS (SELECT CAST(ABS(NUMBER) AS NVARCHAR(MAX))      charNum,
+                NUMBER,
+                LEN(CAST(ABS(NUMBER) AS NVARCHAR(MAX))) LcharNum
+         FROM   TABLE1)
+SELECT CASE
+         WHEN ( LCHARNUM >= 3
+                AND LCHARNUM % 2 = 1 ) THEN SUBSTRING(CHARNUM, LCHARNUM / 2, 3)
+         ELSE 'Error!'
+       END    Output,
+       NUMBER Input
+FROM   DATA