Import the experimental parse-tree explainer, with fixes, from the

tree-explain branch.

FossilOrigin-Name: bcbc7152d49107afa926c8950360c61a6cf3d244

1 files changed, 9 insertions, 0 deletions

diff --git a/src/shell.c b/src/shell.c
index e33a0687b..93ed9a6db 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -1127,6 +1127,15 @@ static int shell_exec(
         fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql);
       }
 
+      /* Output TESTCTRL_EXPLAIN text of requested */
+      if( pArg && pArg->mode==MODE_Explain ){
+        const char *zExplain = 0;
+        sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, pStmt, &zExplain);
+        if( zExplain && zExplain[0] ){
+          fprintf(pArg->out, "%s", zExplain);
+        }
+      }
+
       /* perform the first step.  this will tell us if we
       ** have a result set or not and how wide it is.
       */