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Fix for MIN/MAX with empty tables

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MIN(key_column) could in some cases return NULL on a column with NULL and other values.
MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.


configure.in:
  Updated version number
libmysqld/libmysqld.c:
  Portability fix (for windows)
mysql-test/r/func_group.result:
  Added test case for MIN/MAX problems
mysql-test/t/func_group.test:
  Added test case for MIN/MAX problems
sql/item.h:
  Fix for MIN/MAX with empty tables
sql/item_sum.h:
  Fix for MIN/MAX with empty tables
sql/opt_sum.cc:
  MIN(key_column) could in some cases return NULL on a column
  with NULL and other values.
  MIN(key_column) and MAX(key_column) could in some cases
  return wrong values when used in OUTER JOIN.
sql/sql_select.cc:
  Fix for MIN/MAX with empty tables
This commit is contained in:
unknown
2003-02-03 20:20:32 +02:00
parent ac4dacaa29
commit c73dcb5e30
8 changed files with 158 additions and 27 deletions
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2
libmysqld/libmysqld.c
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@ -62,7 +62,7 @@ my_string mysql_unix_port=0;
#define closesocket(A) close(A)
#endif
static void mysql_once_init(void);
void STDCALL mysql_once_init(void);
static MYSQL_DATA *read_rows (MYSQL *mysql,MYSQL_FIELD *fields,
uint field_count);
static int read_one_row(MYSQL *mysql,uint fields,MYSQL_ROW row,