137 lines
5.8 KiB
C++
137 lines
5.8 KiB
C++
/* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql/dd/impl/system_views/statistics.h"
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#include <string>
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#include "sql/stateless_allocator.h"
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namespace dd {
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namespace system_views {
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const Statistics_base &Statistics::instance() {
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static Statistics_base *s_instance = new Statistics();
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return *s_instance;
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}
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const Statistics_base &Show_statistics::instance() {
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static Statistics_base *s_instance = new Show_statistics();
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return *s_instance;
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}
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Statistics_base::Statistics_base() {
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m_target_def.add_field(FIELD_TABLE_CATALOG, "TABLE_CATALOG",
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"cat.name" + m_target_def.fs_name_collation());
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m_target_def.add_field(FIELD_TABLE_SCHEMA, "TABLE_SCHEMA",
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"sch.name" + m_target_def.fs_name_collation());
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m_target_def.add_field(FIELD_TABLE_NAME, "TABLE_NAME",
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"tbl.name" + m_target_def.fs_name_collation());
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m_target_def.add_field(
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FIELD_NON_UNIQUE, "NON_UNIQUE",
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"IF (idx.type = 'PRIMARY' OR idx.type = 'UNIQUE',0,1)");
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m_target_def.add_field(FIELD_INDEX_SCHEMA, "INDEX_SCHEMA",
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"sch.name" + m_target_def.fs_name_collation());
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m_target_def.add_field(FIELD_INDEX_NAME, "INDEX_NAME",
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"idx.name COLLATE utf8_tolower_ci");
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m_target_def.add_field(FIELD_SEQ_IN_INDEX, "SEQ_IN_INDEX",
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"icu.ordinal_position");
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m_target_def.add_field(
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FIELD_COLUMN_NAME, "COLUMN_NAME",
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"IF (col.hidden = 'SQL', NULL, col.name COLLATE utf8_tolower_ci)");
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m_target_def.add_field(FIELD_COLLATION, "COLLATION",
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"CASE WHEN icu.order = 'DESC' THEN 'D' "
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"WHEN icu.order = 'ASC' THEN 'A' "
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"ELSE NULL END");
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m_target_def.add_field(FIELD_SUB_PART, "SUB_PART",
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"GET_DD_INDEX_SUB_PART_LENGTH(icu.length,"
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"col.type, col.char_length, col.collation_id,"
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"idx.type)");
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m_target_def.add_field(FIELD_PACKED, "PACKED", "NULL");
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m_target_def.add_field(FIELD_NULLABLE, "NULLABLE",
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"IF (col.is_nullable = 1, 'YES','')");
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m_target_def.add_field(FIELD_INDEX_TYPE, "INDEX_TYPE",
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"CASE WHEN idx.type = 'SPATIAL' THEN 'SPATIAL' "
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"WHEN idx.algorithm = 'SE_PRIVATE' THEN '' "
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"ELSE idx.algorithm END ");
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m_target_def.add_field(
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FIELD_COMMENT, "COMMENT",
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"IF (idx.type = 'PRIMARY' OR idx.type = 'UNIQUE', "
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" '',IF(INTERNAL_KEYS_DISABLED(tbl.options),'disabled', ''))");
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m_target_def.add_field(FIELD_INDEX_COMMENT, "INDEX_COMMENT", "idx.comment");
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m_target_def.add_field(FIELD_IS_VISIBLE, "IS_VISIBLE",
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"IF (idx.is_visible, 'YES', 'NO')");
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m_target_def.add_field(
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FIELD_EXPRESSION, "EXPRESSION",
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"IF (col.hidden = 'SQL', col.generation_expression_utf8, NULL)");
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m_target_def.add_from("mysql.index_column_usage icu");
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m_target_def.add_from("JOIN mysql.indexes idx ON idx.id=icu.index_id");
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m_target_def.add_from("JOIN mysql.tables tbl ON idx.table_id=tbl.id");
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m_target_def.add_from("JOIN mysql.columns col ON icu.column_id=col.id");
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m_target_def.add_from("JOIN mysql.schemata sch ON tbl.schema_id=sch.id");
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m_target_def.add_from("JOIN mysql.catalogs cat ON cat.id=sch.catalog_id");
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m_target_def.add_from(
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"JOIN mysql.collations coll "
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"ON tbl.collation_id=coll.id");
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m_target_def.add_where("CAN_ACCESS_TABLE(sch.name, tbl.name)");
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m_target_def.add_where(
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"AND IS_VISIBLE_DD_OBJECT(tbl.hidden, "
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"idx.hidden OR icu.hidden)");
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}
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Statistics::Statistics() {
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m_target_def.set_view_name(view_name());
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m_target_def.add_field(
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FIELD_CARDINALITY, "CARDINALITY",
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"INTERNAL_INDEX_COLUMN_CARDINALITY(sch.name, tbl.name, idx.name,"
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"col.name, idx.ordinal_position,"
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"icu.ordinal_position,"
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"IF(ISNULL(tbl.partition_type), tbl.engine, ''),"
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"tbl.se_private_id,"
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"tbl.hidden != 'Visible' OR idx.hidden OR icu.hidden,"
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"COALESCE(stat.cardinality, CAST(-1 AS UNSIGNED)),"
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"COALESCE(CAST(stat.cached_time as UNSIGNED), 0))");
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m_target_def.add_from(
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"LEFT JOIN mysql.index_stats stat"
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" ON tbl.name=stat.table_name"
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" AND sch.name=stat.schema_name"
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" AND idx.name=stat.index_name"
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" AND col.name=stat.column_name");
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}
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Show_statistics::Show_statistics() {
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m_target_def.set_view_name(view_name());
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m_target_def.add_field(FIELD_INDEX_ORDINAL_POSITION, "INDEX_ORDINAL_POSITION",
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"idx.ordinal_position");
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m_target_def.add_field(FIELD_COLUMN_ORDINAL_POSITION,
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"COLUMN_ORDINAL_POSITION", "icu.ordinal_position");
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}
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} // namespace system_views
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} // namespace dd
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