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MDEV-25129 Add KEYWORDS view to the INFORMATION_SCHEMA

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Add KEYWORDS table and SQL_FUNCTIONS table to INFORMATION_SCHEMA.
This commits needs some minor changes when propagated upwards
(e.g. func_array in item_create.cc has a termination element that
 doesn't exist in later versions of MariaDB)
This commit is contained in:
xing-zhi, jiang
2021-06-24 14:16:11 +03:00
committed by Robert Bindar
parent 58252fff15
commit 768c51880a
12 changed files with 306 additions and 11 deletions
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83
sql/sql_show.cc
View File

@ -62,6 +62,19 @@
#ifdef WITH_PARTITION_STORAGE_ENGINE
#include "ha_partition.h"
#endif
#include "lex_symbol.h"
#define KEYWORD_SIZE 64
extern SYMBOL symbols[];
extern size_t symbols_length;
extern SYMBOL sql_functions[];
extern size_t sql_functions_length;
extern Native_func_registry func_array[];
extern size_t func_array_length;
enum enum_i_s_events_fields
{
ISE_EVENT_CATALOG= 0,
@ -7556,6 +7569,60 @@ int fill_variables(THD *thd, TABLE_LIST *tables, COND *cond)
DBUG_RETURN(res);
}
int add_symbol_to_table(const char* name, TABLE* table){
DBUG_ENTER("add_symbol_to_table");
uint length= strlen(name);
// If you've added a new SQL keyword longer than KEYWORD_SIZE,
// please increase the defined max length
DBUG_ASSERT(length < KEYWORD_SIZE);
restore_record(table, s->default_values);
table->field[0]->set_notnull();
table->field[0]->store(name, length,
system_charset_info);
if (schema_table_store_record(table->in_use, table))
DBUG_RETURN(1);
DBUG_RETURN(0);
}
int fill_i_s_keywords(THD *thd, TABLE_LIST *tables, COND *cond)
{
DBUG_ENTER("fill_i_s_keywords");
TABLE *table= tables->table;
for (uint i= 0; i < symbols_length; i++){
const char *name= symbols[i].name;
if (add_symbol_to_table(name, table))
DBUG_RETURN(1);
}
DBUG_RETURN(0);
}
int fill_i_s_sql_functions(THD *thd, TABLE_LIST *tables, COND *cond) {
DBUG_ENTER("fill_i_s_sql_functions");
TABLE *table= tables->table;
for (uint i= 0; i < sql_functions_length; i++){
const char *name= sql_functions[i].name;
if (add_symbol_to_table(name, table))
DBUG_RETURN(1);
}
for (uint i= 0; i < func_array_length; i++){
const char *name= func_array[i].name.str;
if (add_symbol_to_table(name, table))
DBUG_RETURN(1);
}
DBUG_RETURN(0);
}
int fill_status(THD *thd, TABLE_LIST *tables, COND *cond)
{
@ -8763,6 +8830,18 @@ ST_FIELD_INFO enabled_roles_fields_info[]=
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
};
ST_FIELD_INFO keywords_field_info[]=
{
{"WORD", KEYWORD_SIZE, MYSQL_TYPE_STRING, 0, MY_I_S_MAYBE_NULL, 0, SKIP_OPEN_TABLE},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
};
ST_FIELD_INFO sql_functions_field_info[]=
{
{"FUNCTION", KEYWORD_SIZE, MYSQL_TYPE_STRING, 0, MY_I_S_MAYBE_NULL, 0, SKIP_OPEN_TABLE},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0, SKIP_OPEN_TABLE}
};
ST_FIELD_INFO engines_fields_info[]=
{
@ -9465,6 +9544,8 @@ ST_SCHEMA_TABLE schema_tables[]=
fill_status, make_old_format, 0, 0, -1, 0, 0},
{"GLOBAL_VARIABLES", variables_fields_info, 0,
fill_variables, make_old_format, 0, 0, -1, 0, 0},
{"KEYWORDS", keywords_field_info, 0,
fill_i_s_keywords, 0, 0, -1, -1, 0, 0},
{"KEY_CACHES", keycache_fields_info, 0,
fill_key_cache_tables, 0, 0, -1,-1, 0, 0},
{"KEY_COLUMN_USAGE", key_column_usage_fields_info, 0,
@ -9500,6 +9581,8 @@ ST_SCHEMA_TABLE schema_tables[]=
{"STATISTICS", stat_fields_info, 0,
get_all_tables, make_old_format, get_schema_stat_record, 1, 2, 0,
OPEN_TABLE_ONLY|OPTIMIZE_I_S_TABLE},
{"SQL_FUNCTIONS", sql_functions_field_info, 0,
fill_i_s_sql_functions, 0, 0, -1, -1, 0, 0},
{"SYSTEM_VARIABLES", sysvars_fields_info, 0,
fill_sysvars, make_old_format, 0, 0, -1, 0, 0},
{"TABLES", tables_fields_info, 0,