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Simplify parsing of select query.

This commit is contained in:
Mike McCormack 2005-05-23 11:49:49 +00:00 committed by Alexandre Julliard
parent c53db1934b
commit f50e9aadea
1 changed files with 23 additions and 38 deletions
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61
dlls/msi/sql.y
View File

@ -52,9 +52,6 @@ static LPWSTR SQL_getstring( struct sql_str *str );
static INT SQL_getint( SQL_input *sql ); static INT SQL_getint( SQL_input *sql );
static int SQL_lex( void *SQL_lval, SQL_input *info); static int SQL_lex( void *SQL_lval, SQL_input *info);
static MSIVIEW *do_one_select( MSIDATABASE *db, MSIVIEW *in,
string_list *columns );
static BOOL SQL_MarkPrimaryKeys( create_col_info *cols, static BOOL SQL_MarkPrimaryKeys( create_col_info *cols,
string_list *keys); string_list *keys);
@ -127,7 +124,7 @@ static struct expr * EXPR_wildcard();
%type <string> column table id %type <string> column table id
%type <column_list> selcollist %type <column_list> selcollist
%type <query> query from unorderedsel %type <query> query from unorderedsel selectfrom
%type <query> oneupdate onedelete oneselect onequery onecreate oneinsert %type <query> oneupdate onedelete oneselect onequery onecreate oneinsert
%type <expr> expr val column_val const_val %type <expr> expr val column_val const_val
%type <column_type> column_type data_type data_type_l data_count %type <column_type> column_type data_type data_type_l data_count
@ -340,34 +337,34 @@ oneselect:
; ;
unorderedsel: unorderedsel:
TK_SELECT selcollist from TK_SELECT selectfrom
{ {
SQL_input* sql = (SQL_input*) info; $$ = $2;
if( !$3 )
YYABORT;
if( $2 )
{
$$ = do_one_select( sql->db, $3, $2 );
if( !$$ )
YYABORT;
}
else
$$ = $3;
} }
| TK_SELECT TK_DISTINCT selcollist from | TK_SELECT TK_DISTINCT selectfrom
{ {
SQL_input* sql = (SQL_input*) info; SQL_input* sql = (SQL_input*) info;
MSIVIEW *view = $4;
if( !view ) $$ = NULL;
DISTINCT_CreateView( sql->db, &$$, $3 );
if( !$$ )
YYABORT;
}
;
selectfrom:
selcollist from
{
SQL_input* sql = (SQL_input*) info;
$$ = NULL;
if( $1 )
SELECT_CreateView( sql->db, &$$, $2, $1 );
else
$$ = $2;
if( !$$ )
YYABORT; YYABORT;
if( $3 )
{
view = do_one_select( sql->db, view, $3 );
if( !view )
YYABORT;
}
DISTINCT_CreateView( sql->db, & $$, view );
} }
; ;
@ -677,18 +674,6 @@ int SQL_error(const char *str)
return 0; return 0;
} }
static MSIVIEW *do_one_select( MSIDATABASE *db, MSIVIEW *in,
string_list *columns )
{
MSIVIEW *view = NULL;
SELECT_CreateView( db, &view, in, columns );
delete_string_list( columns );
if( !view )
ERR("Error creating select query\n");
return view;
}
static struct expr * EXPR_wildcard() static struct expr * EXPR_wildcard()
{ {
struct expr *e = HeapAlloc( GetProcessHeap(), 0, sizeof *e ); struct expr *e = HeapAlloc( GetProcessHeap(), 0, sizeof *e );