Question

I have 2 simple tables

+------|---------|----------+
+  ID  |  Value  |   Test   +
+------|---------|----------+
+  3   |   Test  |   12345  +
+  4   |  MyVal  |   56789  +
+  5   |  Another|   101010 +
+------|---------|----------+



+------|---------|----------+
+  ID  |  Value  |   Test   +
+------|---------|----------+
+  3   |   Test  |   12345  +
+  7   |  MyVal12|   56789  +
+  5   |  Another|   101010 +
+------|---------|----------+

The ID from both tables are primary keys.

In my stored procedure, I create a temporary table like this:

CREATE TABLE #tempTable(
        ID int NOT NULL PRIMARY KEY NONCLUSTERED,
        FIELD VARCHAR(255))

and the part of my procedure stored with try-catch block:

BEGIN TRY
INSERT INTO #tempTable(ID, FIELD)
EXEC sp_executesql @myCustomSql, @paramList, @param1, @param2 ...
END TRY

BEGIN CATCH
      // what to put here ?
END CATCH

I want to add rows to my temporary table (you’ll see the duplicates for ID = 3 and 5) and I want to continue adding. Finally I want to have the following content for table:

+------|---------+
+  ID  |  FIELD  +
+------|---------+
+  3   |   Test  +
+  4   |  MyVal  +
+  5   |  Another+ 
+  7   |  MyVal12+
+------|---------+

I gave here a simplified example, in my database I have over one hundred thousand rows and many columns.

Thanks

Answer 1

To ignore (with a warning) attempts to insert duplicate keys rather than raising an error and having the whole statement fail you can use the IGNORE_DUP_KEY option.

CREATE TABLE #tempTable
  (
     ID    INT NOT NULL PRIMARY KEY NONCLUSTERED WITH (IGNORE_DUP_KEY = ON),
     FIELD VARCHAR(255)
  )