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MDEV-12533 sql_mode=ORACLE: Add support for database qualified sequence names in NEXTVAL and CURRVAL

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This commit is contained in:
Alexander Barkov
2017-04-20 08:30:23 +04:00
parent e112eb19c4
commit 33b6a347e4
6 changed files with 150 additions and 164 deletions
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17
mysql-test/suite/compat/oracle/r/sequence.result
View File

@ -58,3 +58,20 @@ View Create View character_set_client collation_connection
v1 CREATE VIEW "v1" AS select lastval("test"."s1") AS "a" latin1 latin1_swedish_ci v1 CREATE VIEW "v1" AS select lastval("test"."s1") AS "a" latin1 latin1_swedish_ci
DROP VIEW v1; DROP VIEW v1;
DROP SEQUENCE s1; DROP SEQUENCE s1;
#
# MDEV-12533 sql_mode=ORACLE: Add support for database qualified sequence names in NEXTVAL and CURRVAL
#
CREATE SEQUENCE s1;
SELECT test.s1.nextval;
test.s1.nextval
1
SELECT test.s1.currval;
test.s1.currval
1
SELECT .s1.nextval;
.s1.nextval
2
SELECT .s1.currval;
.s1.currval
2
DROP SEQUENCE s1;

10
mysql-test/suite/compat/oracle/t/sequence.test
View File

@ -31,3 +31,13 @@ SELECT * FROM v1;
SHOW CREATE VIEW v1; SHOW CREATE VIEW v1;
DROP VIEW v1; DROP VIEW v1;
DROP SEQUENCE s1; DROP SEQUENCE s1;
--echo #
--echo # MDEV-12533 sql_mode=ORACLE: Add support for database qualified sequence names in NEXTVAL and CURRVAL
--echo #
CREATE SEQUENCE s1;
SELECT test.s1.nextval;
SELECT test.s1.currval;
SELECT .s1.nextval;
SELECT .s1.currval;
DROP SEQUENCE s1;

104
sql/sql_lex.cc
View File

@ -6387,6 +6387,53 @@ my_var *LEX::create_outvar(THD *thd,
} }
Item *LEX::create_item_func_nextval(THD *thd, Table_ident *table_ident)
{
TABLE_LIST *table;
if (!(table= current_select->add_table_to_list(thd, table_ident, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
return NULL;
return new (thd->mem_root) Item_func_nextval(thd, table);
}
Item *LEX::create_item_func_lastval(THD *thd, Table_ident *table_ident)
{
TABLE_LIST *table;
if (!(table= current_select->add_table_to_list(thd, table_ident, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_READ)))
return NULL;
return new (thd->mem_root) Item_func_lastval(thd, table);
}
Item *LEX::create_item_func_nextval(THD *thd,
const LEX_STRING &db,
const LEX_STRING &name)
{
Table_ident *table_ident;
if (!(table_ident= new (thd->mem_root) Table_ident(thd, db, name, false)))
return NULL;
return create_item_func_nextval(thd, table_ident);
}
Item *LEX::create_item_func_lastval(THD *thd,
const LEX_STRING &db,
const LEX_STRING &name)
{
Table_ident *table_ident;
if (!(table_ident= new (thd->mem_root) Table_ident(thd, db, name, false)))
return NULL;
return create_item_func_lastval(thd, table_ident);
}
Item *LEX::create_item_ident(THD *thd, Item *LEX::create_item_ident(THD *thd,
const LEX_STRING &a, const LEX_STRING &a,
const LEX_STRING &b, const LEX_STRING &b,
@ -6401,37 +6448,50 @@ Item *LEX::create_item_ident(THD *thd,
if (!my_strnncoll(system_charset_info, if (!my_strnncoll(system_charset_info,
(const uchar *) b.str, 7, (const uchar *) b.str, 7,
(const uchar *) "NEXTVAL", 7)) (const uchar *) "NEXTVAL", 7))
{ return create_item_func_nextval(thd, null_lex_str, a);
TABLE_LIST *table;
Table_ident *table_ident;
if (!(table_ident= new (thd->mem_root) Table_ident(a)) ||
!(table= current_select->add_table_to_list(thd, table_ident, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
return NULL;
return new (thd->mem_root) Item_func_nextval(thd, table);
}
else if (!my_strnncoll(system_charset_info, else if (!my_strnncoll(system_charset_info,
(const uchar *) b.str, 7, (const uchar *) b.str, 7,
(const uchar *) "CURRVAL", 7)) (const uchar *) "CURRVAL", 7))
{ return create_item_func_lastval(thd, null_lex_str, a);
TABLE_LIST *table;
Table_ident *table_ident;
if (!(table_ident= new (thd->mem_root) Table_ident(a)) ||
!(table= current_select->add_table_to_list(thd, table_ident, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_READ)))
return NULL;
return new (thd->mem_root) Item_func_lastval(thd, table);
}
} }
return create_item_ident_nospvar(thd, a, b); return create_item_ident_nospvar(thd, a, b);
} }
Item *LEX::create_item_ident(THD *thd,
const LEX_STRING &a,
const LEX_STRING &b,
const LEX_STRING &c)
{
const char *schema= (thd->client_capabilities & CLIENT_NO_SCHEMA ?
NullS : a.str);
if ((thd->variables.sql_mode & MODE_ORACLE) && c.length == 7)
{
if (!my_strnncoll(system_charset_info,
(const uchar *) c.str, 7,
(const uchar *) "NEXTVAL", 7))
return create_item_func_nextval(thd, a, b);
else if (!my_strnncoll(system_charset_info,
(const uchar *) c.str, 7,
(const uchar *) "CURRVAL", 7))
return create_item_func_lastval(thd, a, b);
}
if (current_select->no_table_names_allowed)
{
my_error(ER_TABLENAME_NOT_ALLOWED_HERE, MYF(0), b.str, thd->where);
return NULL;
}
if (current_select->parsing_place != IN_HAVING ||
current_select->get_in_sum_expr() > 0)
return new (thd->mem_root) Item_field(thd, current_context(),
schema, b.str, c.str);
return new (thd->mem_root) Item_ref(thd, current_context(),
schema, b.str, c.str);
}
Item *LEX::create_item_limit(THD *thd, Item *LEX::create_item_limit(THD *thd,
const LEX_STRING &a, const LEX_STRING &a,

29
sql/sql_lex.h
View File

@ -3239,6 +3239,35 @@ public:
const LEX_STRING &a, const LEX_STRING &a,
const LEX_STRING &b, const LEX_STRING &b,
uint pos_in_q, uint length_in_q); uint pos_in_q, uint length_in_q);
/*
Create an item from its qualified name.
Depending on context, it can be a table field, a table field reference,
or a sequence NEXTVAL and CURRVAL.
@param thd - THD, for mem_root
@param a - the first name
@param b - the second name
@param c - the third name
@retval - NULL on error, or a pointer to a new Item.
*/
Item *create_item_ident(THD *thd,
const LEX_STRING &a,
const LEX_STRING &b,
const LEX_STRING &c);
/*
Create an item for "NEXT VALUE FOR sequence_name"
*/
Item *create_item_func_nextval(THD *thd, Table_ident *ident);
Item *create_item_func_nextval(THD *thd, const LEX_STRING &db,
const LEX_STRING &name);
/*
Create an item for "PREVIOUS VALUE FOR sequence_name"
*/
Item *create_item_func_lastval(THD *thd, Table_ident *ident);
Item *create_item_func_lastval(THD *thd, const LEX_STRING &db,
const LEX_STRING &name);
/* /*
Create an item for a name in LIMIT clause: LIMIT var Create an item for a name in LIMIT clause: LIMIT var
@param THD - THD, for mem_root @param THD - THD, for mem_root

77
sql/sql_yacc.yy
View File

@ -9353,46 +9353,22 @@ column_default_non_parenthesized_expr:
} }
| NEXT_SYM VALUE_SYM FOR_SYM table_ident | NEXT_SYM VALUE_SYM FOR_SYM table_ident
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_nextval(thd, $4)))
if (!(table= Select->add_table_to_list(thd, $4, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_nextval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| NEXTVAL_SYM '(' table_ident ')' | NEXTVAL_SYM '(' table_ident ')'
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_nextval(thd, $3)))
if (!(table= Select->add_table_to_list(thd, $3, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_nextval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| PREVIOUS_SYM VALUE_SYM FOR_SYM table_ident | PREVIOUS_SYM VALUE_SYM FOR_SYM table_ident
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_lastval(thd, $4)))
if (!(table= Select->add_table_to_list(thd, $4, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_READ)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_lastval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| LASTVAL_SYM '(' table_ident ')' | LASTVAL_SYM '(' table_ident ')'
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_lastval(thd, $3)))
if (!(table= Select->add_table_to_list(thd, $3, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_lastval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
; ;
@ -14165,53 +14141,12 @@ simple_ident_q:
simple_ident_q2: simple_ident_q2:
'.' ident '.' ident '.' ident '.' ident
{ {
LEX *lex= thd->lex; if (!($$= Lex->create_item_ident(thd, null_lex_str, $2, $4)))
SELECT_LEX *sel= lex->current_select;
if (sel->no_table_names_allowed)
{
my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
MYF(0), $2.str, thd->where);
}
if ((sel->parsing_place != IN_HAVING) ||
(sel->get_in_sum_expr() > 0))
{
$$= new (thd->mem_root) Item_field(thd, Lex->current_context(),
NullS, $2.str, $4.str);
}
else
{
$$= new (thd->mem_root) Item_ref(thd, Lex->current_context(),
NullS, $2.str, $4.str);
}
if ($$ == NULL)
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| ident '.' ident '.' ident | ident '.' ident '.' ident
{ {
LEX *lex= thd->lex; if (!($$= Lex->create_item_ident(thd, $1, $3, $5)))
SELECT_LEX *sel= lex->current_select;
const char* schema= (thd->client_capabilities & CLIENT_NO_SCHEMA ?
NullS : $1.str);
if (sel->no_table_names_allowed)
{
my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
MYF(0), $3.str, thd->where);
}
if ((sel->parsing_place != IN_HAVING) ||
(sel->get_in_sum_expr() > 0))
{
$$= new (thd->mem_root) Item_field(thd, Lex->current_context(),
schema,
$3.str, $5.str);
}
else
{
$$= new (thd->mem_root) Item_ref(thd, Lex->current_context(),
schema,
$3.str, $5.str);
}
if ($$ == NULL)
MYSQL_YYABORT; MYSQL_YYABORT;
} }
; ;

77
sql/sql_yacc_ora.yy
View File

@ -9441,46 +9441,22 @@ column_default_non_parenthesized_expr:
} }
| NEXT_SYM VALUE_SYM FOR_SYM table_ident | NEXT_SYM VALUE_SYM FOR_SYM table_ident
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_nextval(thd, $4)))
if (!(table= Select->add_table_to_list(thd, $4, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_nextval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| NEXTVAL_SYM '(' table_ident ')' | NEXTVAL_SYM '(' table_ident ')'
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_nextval(thd, $3)))
if (!(table= Select->add_table_to_list(thd, $3, 0,
TL_OPTION_SEQUENCE,
TL_WRITE_ALLOW_WRITE,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_nextval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| PREVIOUS_SYM VALUE_SYM FOR_SYM table_ident | PREVIOUS_SYM VALUE_SYM FOR_SYM table_ident
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_lastval(thd, $4)))
if (!(table= Select->add_table_to_list(thd, $4, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_READ)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_lastval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| LASTVAL_SYM '(' table_ident ')' | LASTVAL_SYM '(' table_ident ')'
{ {
TABLE_LIST *table; if (!($$= Lex->create_item_func_lastval(thd, $3)))
if (!(table= Select->add_table_to_list(thd, $3, 0,
TL_OPTION_SEQUENCE,
TL_READ,
MDL_SHARED_WRITE)))
MYSQL_YYABORT;
if (!($$= new (thd->mem_root) Item_func_lastval(thd, table)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
; ;
@ -14319,53 +14295,12 @@ simple_ident_q2:
} }
| '.' ident '.' ident | '.' ident '.' ident
{ {
LEX *lex= thd->lex; if (!($$= Lex->create_item_ident(thd, null_lex_str, $2, $4)))
SELECT_LEX *sel= lex->current_select;
if (sel->no_table_names_allowed)
{
my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
MYF(0), $2.str, thd->where);
}
if ((sel->parsing_place != IN_HAVING) ||
(sel->get_in_sum_expr() > 0))
{
$$= new (thd->mem_root) Item_field(thd, Lex->current_context(),
NullS, $2.str, $4.str);
}
else
{
$$= new (thd->mem_root) Item_ref(thd, Lex->current_context(),
NullS, $2.str, $4.str);
}
if ($$ == NULL)
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| ident '.' ident '.' ident | ident '.' ident '.' ident
{ {
LEX *lex= thd->lex; if (!($$= Lex->create_item_ident(thd, $1, $3, $5)))
SELECT_LEX *sel= lex->current_select;
const char* schema= (thd->client_capabilities & CLIENT_NO_SCHEMA ?
NullS : $1.str);
if (sel->no_table_names_allowed)
{
my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
MYF(0), $3.str, thd->where);
}
if ((sel->parsing_place != IN_HAVING) ||
(sel->get_in_sum_expr() > 0))
{
$$= new (thd->mem_root) Item_field(thd, Lex->current_context(),
schema,
$3.str, $5.str);
}
else
{
$$= new (thd->mem_root) Item_ref(thd, Lex->current_context(),
schema,
$3.str, $5.str);
}
if ($$ == NULL)
MYSQL_YYABORT; MYSQL_YYABORT;
} }
; ;