branch master updated: Handle NULL values when comparing derivation output details set ids

[Christopher Baines]

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cbaines pushed a commit to branch master
in repository data-service.

The following commit(s) were added to refs/heads/master by this push:
     new 52ac92e  Handle NULL values when comparing derivation output details 
set ids
52ac92e is described below

commit 52ac92e7c7636808556cce7db9a608a363dc7dfc
Author: Christopher Baines <mail@cbaines.net>
AuthorDate: Fri Feb 12 09:18:50 2021 +0000

    Handle NULL values when comparing derivation output details set ids
    
    Otherwise this restricts the results to entries where neither value is NULL.
---
 guix-data-service/comparison.scm | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/guix-data-service/comparison.scm b/guix-data-service/comparison.scm
index aad76bd..a61165e 100644
--- a/guix-data-service/comparison.scm
+++ b/guix-data-service/comparison.scm
@@ -386,8 +386,16 @@ WHERE
        "")
    (if exclude-unchanged-outputs?
        "
-  AND base_packages.derivation_output_details_set_id <>
+  AND
+  (
+    (
+      base_packages.derivation_output_details_set_id IS NULL OR
+      target_packages.derivation_output_details_set_id IS NULL
+    ) OR (
+      base_packages.derivation_output_details_set_id <>
       target_packages.derivation_output_details_set_id
+    )
+  )
   "
        "")
    (cond