ok, calculate max_length only in case of a blob (normal, medium, long).

in case of a varchar lets allocate 255 bytes and be quick without asking
libmysql to update max_length

diff --git a/ext/pdo_mysql/mysql_statement.c b/ext/pdo_mysql/mysql_statement.c
index c778fe874fe8f0134a28815ed10a429cffdc020c..bfade370fb3deb919048ceda304c8dd0cc80059e 100755 (executable)
--- a/ext/pdo_mysql/mysql_statement.c
+++ b/ext/pdo_mysql/mysql_statement.c
@@ -94,7 +94,25 @@ static int pdo_mysql_stmt_execute(pdo_stmt_t *stmt TSRMLS_DC)
                /* if buffered, pre-fetch all the data */
                if (H->buffered) {
                        my_bool on = 1;
-                       mysql_stmt_attr_set(S->stmt, STMT_ATTR_UPDATE_MAX_LENGTH, &on);
+                       /* if we have bound the buffers don't set the attribute again */
+                       if (!S->result) {
+                               for (i= 0; i < stmt->column_count; i++) {
+                                       /*
+                                               FIXME: using directly internal structs - but for now cleaner
+                                               then calling 2 times result_metadata.
+                                       */
+                                       switch (S->fields[i].type) {
+                                               case MYSQL_TYPE_MEDIUM_BLOB:
+                                               case MYSQL_TYPE_LONG_BLOB:
+                                               case MYSQL_TYPE_BLOB:
+                                                       mysql_stmt_attr_set(S->stmt, STMT_ATTR_UPDATE_MAX_LENGTH, &on);
+                                                       i= stmt->column_count;
+                                                       break;
+                                               default:
+                                                       break;
+                                       }
+                               }
+                       }
                        mysql_stmt_store_result(S->stmt);
                }