From fe359593baac8933c3435d3a32023a3fd634db42 Mon Sep 17 00:00:00 2001
From: Johan Wikman <johan.wikman@mariadb.com>
Date: Mon, 25 Mar 2019 16:56:14 +0200
Subject: [PATCH] MXS-2407 Report database for SHOW TABLES FROM db

The database used in 'SHOW TABLES FROM db' is now available via
qc_get_database_names().
---
 query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc | 6 +++---
 query_classifier/qc_sqlite/qc_sqlite.cc               | 8 ++++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc b/query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc
index e83c4d2c2..ceb581800 100644
--- a/query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc
+++ b/query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc
@@ -1848,14 +1848,14 @@ int32_t qc_mysql_get_database_names(GWBUF* querybuf, char*** databasesp, int* si
         goto retblock;
     }
 
-    if (lex->describe || is_show_command(lex->sql_command))
+    if (lex->describe || (is_show_command(lex->sql_command) && !(lex->sql_command == SQLCOM_SHOW_TABLES)))
     {
         goto retblock;
     }
 
-    if (lex->sql_command == SQLCOM_CHANGE_DB)
+    if (lex->sql_command == SQLCOM_CHANGE_DB || lex->sql_command == SQLCOM_SHOW_TABLES)
     {
-        if (lex->select_lex.db)
+        if (lex->select_lex.db && (strcmp(lex->select_lex.db, "skygw_virtual") != 0))
         {
             if (i >= currsz)
             {
diff --git a/query_classifier/qc_sqlite/qc_sqlite.cc b/query_classifier/qc_sqlite/qc_sqlite.cc
index bb5e4a5a7..d57cbc4e3 100644
--- a/query_classifier/qc_sqlite/qc_sqlite.cc
+++ b/query_classifier/qc_sqlite/qc_sqlite.cc
@@ -3031,6 +3031,14 @@ public:
 
         case MXS_SHOW_TABLES:
             m_type_mask = QUERY_TYPE_SHOW_TABLES;
+            if (pShow->pDatabase->z)
+            {
+                char db[pShow->pDatabase->n + 1];
+                strncpy(db, pShow->pDatabase->z, pShow->pDatabase->n);
+                db[pShow->pDatabase->n] = 0;
+
+                update_database_names(db);
+            }
             break;
 
         case MXS_SHOW_VARIABLES: