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authorunknown <gkodinov/kgeorge@magare.gmz>2007-09-26 14:22:48 +0300
committerunknown <gkodinov/kgeorge@magare.gmz>2007-09-26 14:22:48 +0300
commitc89bc705a9e300d12a64dffe4df89ec3564d76a0 (patch)
tree6b147f71d5f5a02afe4727b26ecc5e2a410eaa2b /sql
parente4cbbcf8a970b854bfbc34f77571afdb0b247814 (diff)
parentca448acc25f6502140a68942b2d6d043d3482708 (diff)
downloadmariadb-git-c89bc705a9e300d12a64dffe4df89ec3564d76a0.tar.gz
merged bug 28702 5.0-opt->5.1-opt
mysql-test/r/view.result: Auto merged sql/sql_select.cc: Auto merged sql/sql_view.cc: Auto merged sql/table.h: Auto merged
Diffstat (limited to 'sql')
-rw-r--r--sql/sql_select.cc52
-rw-r--r--sql/table.h2
2 files changed, 54 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index b77bb719e1e..83eb597041a 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -16043,6 +16043,47 @@ static void print_join(THD *thd, String *str, List<TABLE_LIST> *tables)
}
+/**
+ @brief Print an index hint for a table
+
+ @details Prints out the USE|FORCE|IGNORE index hints for a table.
+
+ @param thd the current thread
+ @param[out] str appends the index hint here
+ @param hint what the hint is (as string : "USE INDEX"|
+ "FORCE INDEX"|"IGNORE INDEX")
+ @param hint_length the length of the string in 'hint'
+ @param indexes a list of index names for the hint
+*/
+
+void
+TABLE_LIST::print_index_hint(THD *thd, String *str,
+ const char *hint, uint32 hint_length,
+ List<String> indexes)
+{
+ List_iterator_fast<String> li(indexes);
+ String *idx;
+ bool first= 1;
+
+ str->append (' ');
+ str->append (hint, hint_length);
+ str->append (STRING_WITH_LEN(" ("));
+ while ((idx = li++))
+ {
+ if (first)
+ first= 0;
+ else
+ str->append(',');
+ if (!my_strcasecmp (system_charset_info, idx->c_ptr_safe(),
+ primary_key_name))
+ str->append(primary_key_name);
+ else
+ append_identifier (thd, str, idx->ptr(), idx->length());
+ }
+ str->append(')');
+}
+
+
/*
Print table as it should be in join list
@@ -16110,6 +16151,17 @@ void TABLE_LIST::print(THD *thd, String *str)
str->append(' ');
append_identifier(thd, str, alias, strlen(alias));
}
+
+ if (use_index)
+ {
+ if (force_index)
+ print_index_hint(thd, str, STRING_WITH_LEN("FORCE INDEX"), *use_index);
+ else
+ print_index_hint(thd, str, STRING_WITH_LEN("USE INDEX"), *use_index);
+ }
+ if (ignore_index)
+ print_index_hint (thd, str, STRING_WITH_LEN("IGNORE INDEX"), *ignore_index);
+
}
}
diff --git a/sql/table.h b/sql/table.h
index 6554b6ed578..89d92b1be13 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -1161,6 +1161,8 @@ struct TABLE_LIST
private:
bool prep_check_option(THD *thd, uint8 check_opt_type);
bool prep_where(THD *thd, Item **conds, bool no_where_clause);
+ void print_index_hint(THD *thd, String *str, const char *hint,
+ uint32 hint_length, List<String>);
/*
Cleanup for re-execution in a prepared statement or a stored
procedure.