You are working on the sqlfluff/sqlfluff repository. The source code is checked out at /testbed at commit…

You are working on the sqlfluff/sqlfluff repository. The source code is checked out at /testbed at commit…: a task in SWE-Lego-RL-2699 (Harbor dataset). Avoid table aliases in join conditions (especially initialisms) – it's harder to understand what the table called "c" is compared to "customers".