From 5954404015484ff4dfd250bf010805fcf4f0ab1b Mon Sep 17 00:00:00 2001 From: unknown Date: Tue, 7 Jun 2005 14:11:36 +0400 Subject: Patch two (the final one) for Bug#7306 "the server side preparedStatement error for LIMIT placeholder". The patch adds grammar support for LIMIT ?, ? and changes the type of ST_SELECT_LEX::select_limit,offset_limit from ha_rows to Item*, so that it can point to Item_param. mysql-test/include/ps_modify.inc: Fix existing tests: now LIMIT can contain placeholders. mysql-test/include/ps_query.inc: Fix existing tests: now LIMIT can contain placeholders. mysql-test/r/ps.result: Add basic test coverage for LIMIT ?, ? and fix test results. mysql-test/r/ps_2myisam.result: Fix test results: now LIMIT can contain placeholders. mysql-test/r/ps_3innodb.result: Fix test results: now LIMIT can contain placeholders. mysql-test/r/ps_4heap.result: Fix test results: now LIMIT can contain placeholders. mysql-test/r/ps_5merge.result: Fix test results: now LIMIT can contain placeholders. mysql-test/r/ps_6bdb.result: Fix test results: now LIMIT can contain placeholders. mysql-test/r/ps_7ndb.result: Fix test results: now LIMIT can contain placeholders. mysql-test/t/ps.test: Add basic test coverage for LIMIT ?, ?. sql/item.h: Add a short-cut for (ulonglong) val_int() to Item. Add a constructor to Item_int() that accepts ulonglong. Simplify Item_uint constructor by using the c-tor above. sql/item_subselect.cc: Now select_limit has type Item *. We can safely create an Item in Item_exists_subselect::fix_length_and_dec(): it will be allocated in runtime memory root and freed in the end of execution. sql/sp_head.cc: Add a special initalization state for stored procedures to be able to easily distinguish the first execution of a stored procedure from prepared statement prepare. sql/sql_class.h: Introduce new state 'INITIALIZED_FOR_SP' to be able to easily distinguish the first execution of a stored procedure from prepared statement prepare. sql/sql_derived.cc: - use unit->set_limit() to set unit->select_limit_cnt, offset_limit_cnt evreryplace. Add a warning about use of set_limit in mysql_derived_filling. sql/sql_error.cc: - use unit->set_limit() to set unit->select_limit_cnt, offset_limit_cnt evreryplace. - this change is also aware of bug#11095 "show warnings limit 0 returns all rows instead of zero rows", so the one who merges the bugfix from 4.1 can use local version of sql_error.cc. sql/sql_handler.cc: - use unit->set_limit() to initalize unit->select_limit_cnt,offset_limit_cnt everyplace. sql/sql_lex.cc: Now ST_SELECT_LEX::select_limit, offset_limit have type Item * sql/sql_lex.h: Now ST_SELECT_LEX::select_limit, offset_limit have type Item * sql/sql_parse.cc: - use unit->set_limit() to initalize unit->select_limit_cnt,offset_limit_cnt everyplace. - we can create an Item_int to set global limit of a statement: it will be created in the runtime mem root and freed in the end of execution. sql/sql_repl.cc: Use unit->set_limit to initialize limits. sql/sql_select.cc: - select_limit is now Item* so the proper way to check for default value is to compare it with NULL. sql/sql_union.cc: Evaluate offset_limit_cnt using the new type of ST_SELECT_LEX::offset_limit sql/sql_view.cc: Now ST_SELECT_LEX::select_limit, offset_limit have type Item * sql/sql_yacc.yy: Add grammar support for LIMIT ?, ? clause. --- mysql-test/r/ps.result | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'mysql-test/r/ps.result') diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result index 8371437d664..496d566a5ee 100644 --- a/mysql-test/r/ps.result +++ b/mysql-test/r/ps.result @@ -634,3 +634,44 @@ id 3 deallocate prepare stmt; drop table t1, t2; +create table t1 (a int); +insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); +prepare stmt from "select * from t1 limit ?, ?"; +set @offset=0, @limit=1; +execute stmt using @offset, @limit; +a +1 +select * from t1 limit 0, 1; +a +1 +set @offset=3, @limit=2; +execute stmt using @offset, @limit; +a +4 +5 +select * from t1 limit 3, 2; +a +4 +5 +prepare stmt from "select * from t1 limit ?"; +execute stmt using @limit; +a +1 +2 +prepare stmt from "select * from t1 where a in (select a from t1 limit ?)"; +ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' +prepare stmt from "select * from t1 union all select * from t1 limit ?, ?"; +set @offset=9; +set @limit=2; +execute stmt using @offset, @limit; +a +10 +1 +prepare stmt from "(select * from t1 limit ?, ?) union all + (select * from t1 limit ?, ?) order by a limit ?"; +execute stmt using @offset, @limit, @offset, @limit, @limit; +a +10 +10 +drop table t1; +deallocate prepare stmt; -- cgit v1.2.1