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Changed database, tablename and alias to be LEX_CSTRING

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This was done in, among other things:
- thd->db and thd->db_length
- TABLE_LIST tablename, db, alias and schema_name
- Audit plugin database name
- lex->db
- All db and table names in Alter_table_ctx
- st_select_lex db

Other things:
- Changed a lot of functions to take const LEX_CSTRING* as argument
  for db, table_name and alias. See init_one_table() as an example.
- Changed some function arguments from LEX_CSTRING to const LEX_CSTRING
- Changed some lists from LEX_STRING to LEX_CSTRING
- threads_mysql.result changed because process list_db wasn't always
  correctly updated
- New append_identifier() function that takes LEX_CSTRING* as arguments
- Added new element tmp_buff to Alter_table_ctx to separate temp name
  handling from temporary space
- Ensure we store the length after my_casedn_str() of table/db names
- Removed not used version of rename_table_in_stat_tables()
- Changed Natural_join_column::table_name and db_name() to never return
  NULL (used for print)
- thd->get_db() now returns db as a printable string (thd->db.str or "")
This commit is contained in:
Monty
2018-01-07 18:03:44 +02:00
parent 921c5e9314
commit a7e352b54d
145 changed files with 2361 additions and 2407 deletions
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8
sql/sql_lex.h
View File

@ -206,7 +206,7 @@ struct LEX_TYPE
#ifdef MYSQL_SERVER
extern const LEX_STRING empty_lex_str;
extern const LEX_CSTRING empty_clex_str;
extern MYSQL_PLUGIN_IMPORT const LEX_CSTRING empty_clex_str;
extern const LEX_CSTRING star_clex_str;
extern const LEX_CSTRING param_clex_str;
@ -837,7 +837,7 @@ class st_select_lex: public st_select_lex_node
{
public:
Name_resolution_context context;
const char *db;
LEX_CSTRING db;
Item *where, *having; /* WHERE & HAVING clauses */
Item *prep_where; /* saved WHERE clause for prepared statement processing */
Item *prep_having;/* saved HAVING clause for prepared statement processing */
@ -2754,7 +2754,7 @@ public:
List<Item_func_set_user_var> set_var_list; // in-query assignment list
List<Item_param> param_list;
List<LEX_STRING> view_list; // view list (list of field names in view)
List<LEX_CSTRING> view_list; // view list (list of field names in view)
List<LEX_CSTRING> with_column_list; // list of column names in with_list_element
List<LEX_STRING> *column_list; // list of column names (in ANALYZE)
List<LEX_STRING> *index_list; // list of index names (in ANALYZE)
@ -3124,7 +3124,7 @@ public:
context_stack.pop();
}
bool copy_db_to(const char **p_db, size_t *p_db_length) const;
bool copy_db_to(LEX_CSTRING *to);
Name_resolution_context *current_context()
{