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smarter ALTER TABLE - don't copy the table if only comment or default values are changed

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sql/handler.cc:
  do not delete the table in the "unkonwn" handler (makes no sense anyway)
sql/handler.h:
  more HA_CREATE_USED flags
sql/sql_lex.h:
  more ALTER_ flags, no alter_info->is_simple anymore
sql/sql_parse.cc:
  no alter_info->is_simple anymore
sql/sql_table.cc:
  do not rename the table in the "unkonwn" handler (makes no sense anyway)
  smarter ALTER TABLE - don't copy the table if only comment or default values are changed
sql/sql_yacc.yy:
  specify what ALTER is todo with flags, not alter_info->is_simple
sql/unireg.cc:
  create frm only (but not in the handler) if requested
This commit is contained in:
unknown
2004-10-21 18:10:58 +02:00
parent 00bbd9a252
commit a01f45e59d
7 changed files with 151 additions and 114 deletions
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4
sql/sql_lex.h
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@ -593,6 +593,9 @@ typedef class st_select_lex SELECT_LEX;
#define ALTER_RENAME 32
#define ALTER_ORDER 64
#define ALTER_OPTIONS 128
#define ALTER_CHANGE_COLUMN_DEFAULT 256
#define ALTER_KEYS_ONOFF 512
#define ALTER_CONVERT 1024
typedef struct st_alter_info
{
@ -601,7 +604,6 @@ typedef struct st_alter_info
uint flags;
enum enum_enable_or_disable keys_onoff;
enum tablespace_op_type tablespace_op;
bool is_simple;
st_alter_info(){clear();}
void clear(){keys_onoff= LEAVE_AS_IS;tablespace_op= NO_TABLESPACE_OP;}