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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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2
sql/handler.cc
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@@ -785,7 +785,7 @@ bool ha_flush_logs()
int ha_delete_table(enum db_type table_type, const char *path)
{
char tmp_path[FN_REFLEN];
handler *file=get_new_handler((TABLE*) 0, table_type);
handler *file=(table_type== DB_TYPE_UNKNOWN ? 0 : get_new_handler((TABLE*) 0, table_type));
if (!file)
return ENOENT;
if (lower_case_table_names == 2 && !(file->table_flags() & HA_FILE_BASED))