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WL#1034 update

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- fix crash of an event that alters itself
- make "alter event xyz;" invalid because at least 1 clause is needed.


sql/sql_yacc.yy:
  - make "alter event xyz;" a syntax error. the user has to provide at least one clause
This commit is contained in:
unknown 2005-12-28 13:43:27 +02:00
parent b3e352725f
commit 8ba78896b3
1 changed files with 35 additions and 12 deletions
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47
sql/sql_yacc.yy
View file

@ -1411,12 +1411,13 @@ ev_schedule_time: EVERY_SYM expr interval
}
;
ev_status: /* empty */
ev_status: /* empty */ {$<ulong_num>$= 0;}
| ENABLED_SYM
{
LEX *lex=Lex;
if (!lex->et_compile_phase)
lex->et->status= MYSQL_EVENT_ENABLED;
lex->et->status= MYSQL_EVENT_ENABLED;
$<ulong_num>$= 1;
}
| DISABLED_SYM
{
@ -1424,6 +1425,7 @@ ev_status: /* empty */
if (!lex->et_compile_phase)
lex->et->status= MYSQL_EVENT_DISABLED;
$<ulong_num>$= 1;
}
;
ev_starts: /* empty */
@ -1453,21 +1455,23 @@ ev_ends: /* empty */
}
}
;
ev_on_completion: /* empty */
ev_on_completion: /* empty */ {$<ulong_num>$= 0;}
| ON COMPLETION_SYM PRESERVE_SYM
{
LEX *lex=Lex;
if (!lex->et_compile_phase)
lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_PRESERVE;
lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_PRESERVE;
$<ulong_num>$= 1;
}
| ON COMPLETION_SYM NOT_SYM PRESERVE_SYM
{
LEX *lex=Lex;
if (!lex->et_compile_phase)
lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_DROP;
lex->et->on_completion= MYSQL_EVENT_ON_COMPLETION_DROP;
$<ulong_num>$= 1;
}
;
ev_comment: /* empty */
ev_comment: /* empty */ {$<ulong_num>$= 0;}
| COMMENT_SYM TEXT_STRING_sys
{
LEX *lex= Lex;
@ -1476,6 +1480,7 @@ ev_comment: /* empty */
lex->comment= $2;
lex->et->init_comment(YYTHD, &$2);
}
$<ulong_num>$= 1;
}
;
@ -4270,24 +4275,42 @@ alter:
sql_command is set here because some rules in ev_sql_stmt
can overwrite it
*/
printf("5=%d 6=%d 7=%d 8=%d 9=%d 10=%d", $<ulong_num>5 , $<ulong_num>6 , $<ulong_num>7 ,
$<ulong_num>8 , $<ulong_num>9 , $<ulong_num>10);
if (!($<ulong_num>5 || $<ulong_num>6 || $<ulong_num>7 ||
$<ulong_num>8 || $<ulong_num>9 || $<ulong_num>10))
{
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
}
Lex->sql_command= SQLCOM_ALTER_EVENT;
}
;
ev_on_schedule: /* empty */
| ON SCHEDULE_SYM ev_schedule_time;
ev_on_schedule: /* empty */ { $<ulong_num>$= 0;}
| ON SCHEDULE_SYM ev_schedule_time
{
$<ulong_num>$= 1;
}
;
ev_opt_sql_stmt: /* empty*/
| DO_SYM ev_sql_stmt;
ev_rename_to: /* empty */
ev_rename_to: /* empty */ { $<ulong_num>$= 0;}
| RENAME TO_SYM sp_name
{
LEX *lex=Lex;
lex->spname= $3; //use lex's spname to hold the new name
//the original name is in the event_timed object
$<ulong_num>$= 1;
}
;
ev_opt_sql_stmt: /* empty*/ { $<ulong_num>$= 0;}
| DO_SYM ev_sql_stmt
{
$<ulong_num>$= 1;
}
;
ident_or_empty:
/* empty */ { $$= 0; }