Ignore trailing semicolon in hashing a query

Since PG10 pg_stat_statements doesn't store trailing semicolon in the
column "query". Normalization is basically useless in the version but
still usefull to match utility commands so follow the behavior change.

diff --git a/pgsp_json.c b/pgsp_json.c
index b126a18..6afdc40 100644 (file)
--- a/pgsp_json.c
+++ b/pgsp_json.c
@@ -501,6 +501,18 @@ normalize_expr(char *expr, bool preserve_space)
                                memcpy(wp, expr + i, i2 - i);
                                wp += i2 - i;
                        }
+#if PG_VERSION_NUM >= 100000
+                       /*
+                        * Since PG10 pg_stat_statements doesn't store trailing semicolon
+                        * in the column "query". Normalization is basically useless in the
+                        * version but still usefull to match utility commands so follow
+                        * the behavior change.
+                        */
+                       else if (lasttok == ';')
+                       {
+                               /* Just do nothing */
+                       }
+#endif
                        else
                        {
                                /* Upcase keywords */