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author | unknown <sergefp@mysql.com> | 2005-02-05 18:18:06 +0300 |
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committer | unknown <sergefp@mysql.com> | 2005-02-05 18:18:06 +0300 |
commit | 0989e1afd93a205e544067891240a07ae4fa51a6 (patch) | |
tree | ab6b57be940abfceac89ce815edc84cc764c9c16 /sql/table.h | |
parent | b23da8fa96601d9549595cfe910a21e063b9b023 (diff) | |
parent | d52afba56aed1623f971cd74c34c0014a0303ebc (diff) | |
download | mariadb-git-0989e1afd93a205e544067891240a07ae4fa51a6.tar.gz |
Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.0
into mysql.com:/home/psergey/mysql-5.0-outer-joins-cleanup
sql/mysql_priv.h:
Auto merged
sql/table.h:
Auto merged
Diffstat (limited to 'sql/table.h')
-rw-r--r-- | sql/table.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sql/table.h b/sql/table.h index 432267bf72b..8dcd4e658db 100644 --- a/sql/table.h +++ b/sql/table.h @@ -217,14 +217,18 @@ struct st_table { uint derived_select_number; int current_lock; /* Type of lock on table */ my_bool copy_blobs; /* copy_blobs when storing */ + + /* + 0 or JOIN_TYPE_{LEFT|RIGHT}. Currently this is only compared to 0. + If maybe_null !=0, this table is inner w.r.t. some outer join operation, + and null_row may be true. + */ + uint maybe_null; /* - Used in outer joins: if true, all columns are considered to have NULL - values, including columns declared as "not null". + If true, the current table row is considered to have all columns set to + NULL, including columns declared as "not null" (see maybe_null). */ my_bool null_row; - /* 0 or JOIN_TYPE_{LEFT|RIGHT}, same as TABLE_LIST::outer_join */ - my_bool outer_join; - my_bool maybe_null; /* true if (outer_join != 0) */ my_bool force_index; my_bool distinct,const_table,no_rows; my_bool key_read, no_keyread; |