There is a disparity between the pagelinks table on enwiki_p on labsdb1001 and the same on live.
The query in the transcript below should return no rows, per https://en.wikipedia.org/w/index.php?title=Special%3AWhatLinksHere&target=South-Africa&namespace=0
tb@tools-bastion-03:~$ become tb-dev
tools.tb-dev@tools-bastion-03:~$ sql enwiki
Reading table information for completion of table and column names
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Your MariaDB connection id is 32283889
Server version: 10.0.15-MariaDB Source distribution
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MariaDB [enwiki_p]> select page_title from page inner join pagelinks on page_id = pl_from where pl_namespace = 0 and pl_title = 'South-Africa' and page_namespace = 0;
+-------------------+
| page_title |
+-------------------+
| William_Robertson |
+-------------------+
1 row in set (0.01 sec)
MariaDB [enwiki_p]> select @@hostname;
+------------+
| @@hostname |
+------------+
| labsdb1001 |
+------------+