[SPARK-15978] [SQL] improve 'show tables' command related codes #13695
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What changes were proposed in this pull request?
I've found some minor issues in "show tables" command:
SessionCatalog.scala,listTables(db: String)method will calllistTables(formatDatabaseName(db), "*")to list all the tables for certain db, but in the methodlistTables(db: String, pattern: String), this db name is formatted once more. So I think we should removeformatDatabaseName()in the caller.How was this patch tested?
The existing test cases should cover it.