diff options
Diffstat (limited to 'storage/innobase/include/row0sel.ic')
| -rw-r--r-- | storage/innobase/include/row0sel.ic | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/storage/innobase/include/row0sel.ic b/storage/innobase/include/row0sel.ic index d83a3448832..a816e4440e2 100644 --- a/storage/innobase/include/row0sel.ic +++ b/storage/innobase/include/row0sel.ic @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1997, 2009, Oracle and/or its affiliates. All Rights Reserved. +Copyright (c) 1997, 2014, Oracle and/or its affiliates. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software @@ -27,7 +27,7 @@ Created 12/19/1997 Heikki Tuuri /*********************************************************************//** Gets the plan node for the nth table in a join. -@return plan node */ +@return plan node */ UNIV_INLINE plan_t* sel_node_get_nth_plan( @@ -55,7 +55,7 @@ sel_node_reset_cursor( /**********************************************************************//** Performs an execution step of an open or close cursor statement node. -@return query thread to run next or NULL */ +@return query thread to run next or NULL */ UNIV_INLINE que_thr_t* open_step( @@ -103,3 +103,43 @@ open_step( return(thr); } + + +/** Searches for rows in the database. This is used in the interface to +MySQL. This function opens a cursor, and also implements fetch next +and fetch prev. NOTE that if we do a search with a full key value +from a unique index (ROW_SEL_EXACT), then we will not store the cursor +position and fetch next or fetch prev must not be tried to the cursor! + +@param[out] buf buffer for the fetched row in MySQL format +@param[in] mode search mode PAGE_CUR_L +@param[in,out] prebuilt prebuilt struct for the table handler; + this contains the info to search_tuple, + index; if search tuple contains 0 field then + we position the cursor at start or the end of + index, depending on 'mode' +@param[in] match_mode 0 or ROW_SEL_EXACT or ROW_SEL_EXACT_PREFIX +@param[in] direction 0 or ROW_SEL_NEXT or ROW_SEL_PREV; + Note: if this is != 0, then prebuilt must has a + pcur with stored position! In opening of a + cursor 'direction' should be 0. +@return DB_SUCCESS, DB_RECORD_NOT_FOUND, DB_END_OF_INDEX, DB_DEADLOCK, +DB_LOCK_TABLE_FULL, DB_CORRUPTION, or DB_TOO_BIG_RECORD */ +UNIV_INLINE +dberr_t +row_search_for_mysql( + byte* buf, + page_cur_mode_t mode, + row_prebuilt_t* prebuilt, + ulint match_mode, + ulint direction) +{ + if (!dict_table_is_intrinsic(prebuilt->table)) { + return(row_search_mvcc( + buf, mode, prebuilt, match_mode, direction)); + } else { + return(row_search_no_mvcc( + buf, mode, prebuilt, match_mode, direction)); + } +} + |