set @@global.connect_exact_info=ON;
CREATE TABLE xt1 (
id INT KEY NOT NULL,
msg VARCHAR(32))
ENGINE=MyISAM;
INSERT INTO xt1 VALUES(4, 'four'),(7,'seven'),(1,'one'),(8,'eight');
SELECT * FROM xt1;
id msg 4 four 7 seven 1 one 8 eight
CREATE TABLE xt2 (
id INT KEY NOT NULL,
msg VARCHAR(32));
INSERT INTO xt2 VALUES(10,'ten'),(40,'forty'),(11,'eleven'),(35,'thirty five');
SELECT * FROM xt2;
id msg 10 ten 40 forty 11 eleven 35 thirty five
CREATE TABLE xt3 (
id INT KEY NOT NULL,
msg VARCHAR(32))
ENGINE=CONNECT TABLE_TYPE=CSV AVG_ROW_LENGTH=6;
Warnings:
Warning 1105 No file name. Table will use xt3.csv
INSERT INTO xt3 VALUES(60,'sixty'),(81,'eighty one'),(72,'seventy two');
SELECT * FROM xt3;
id msg 60 sixty 81 eighty one 72 seventy two
CREATE TABLE t1 (
id INT NOT NULL,
msg VARCHAR(32))
ENGINE=CONNECT TABLE_TYPE=PROXY TABNAME='xt%s'
PARTITION BY RANGE COLUMNS(id) (
PARTITION `1` VALUES LESS THAN(10),
PARTITION `2` VALUES LESS THAN(50),
PARTITION `3` VALUES LESS THAN(MAXVALUE));
Warnings:
Warning 1105 Data repartition in 1 is unchecked
Warning 1105 Data repartition in 2 is unchecked
Warning 1105 Data repartition in 3 is unchecked
SELECT partition_name, table_rows FROM information_schema.partitions WHERE table_name = 't1';
partition_name table_rows 14 24 33
SELECT * FROM t1;
id msg 4 four 7 seven 1 one 8 eight 10 ten 40 forty 11 eleven 35 thirty five 60 sixty 81 eighty one 72 seventy two
DELETE FROM t1;
Warnings:
Note 1105 xt1: 4 affected rows
Note 1105 xt2: 4 affected rows
ALTER TABLE t1 ADD INDEX XID(id); ERROR HY000: Table type PROXY is not indexable
INSERT INTO t1 VALUES(4, 'four');
INSERT INTO t1 VALUES(7,'seven'),(10,'ten'),(40,'forty'),(60,'sixty'),(81,'eighty one');
INSERT INTO t1 VALUES(72,'seventy two'),(11,'eleven'),(1,'one'),(35,'thirty five'),(8,'eight');
SELECT partition_name, table_rows FROM information_schema.partitions WHERE table_name = 't1';
partition_name table_rows 14 24 33
SELECT * FROM t1;
id msg 4 four 7 seven 1 one 8 eight 10 ten 40 forty 11 eleven 35 thirty five 60 sixty 81 eighty one 72 seventy two
EXPLAIN PARTITIONS
SELECT * FROM t1 WHERE id = 81;
id select_type table partitions type possible_keys key key_len ref rows Extra 1 SIMPLE t1 3 ALL NULL NULL NULL NULL 6 Using where
DELETE FROM t1;
Warnings:
Note 1105 xt1: 4 affected rows
Note 1105 xt2: 4 affected rows
DROP TABLE t1;
CREATE TABLE t1 (
id INT KEY NOT NULL,
msg VARCHAR(32))
ENGINE=CONNECT TABLE_TYPE=MYSQL TABNAME='xt%s'
PARTITION BY RANGE COLUMNS(id) (
PARTITION `1` VALUES LESS THAN(10),
PARTITION `2` VALUES LESS THAN(50),
PARTITION `3` VALUES LESS THAN(MAXVALUE));
Warnings:
Warning 1105 Data repartition in 1 is unchecked
Warning 1105 Data repartition in 2 is unchecked
Warning 1105 Data repartition in 3 is unchecked
SHOW INDEX FROM t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Ignored
t1 0 PRIMARY 1 id NULL NULL NULL NULL REMOTE NO
INSERT INTO t1 VALUES(4, 'four');
INSERT INTO t1 VALUES(40, 'forty');
INSERT INTO t1 VALUES(72,'seventy two');
INSERT INTO t1 VALUES(7,'seven'),(10,'ten'),(60,'sixty'),(81,'eighty one'),(11,'eleven'),(1,'one'),(35,'thirty five'),(8,'eight');
SELECT partition_name, table_rows FROM information_schema.partitions WHERE table_name = 't1';
partition_name table_rows 14 24 33
SELECT * FROM t1;
id msg 4 four 7 seven 1 one 8 eight 40 forty 10 ten 11 eleven 35 thirty five 72 seventy two 60 sixty 81 eighty one
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE id = 81;
id select_type table partitions type possible_keys key key_len ref rows Extra 1 SIMPLE t1 3 const PRIMARY PRIMARY 4 const 1
SELECT * FROM t1 WHERE id = 7;
id msg 7 seven
SELECT * FROM t1 WHERE id = 35;
id msg 35 thirty five
UPDATE t1 SET msg = 'number' WHERE id in (60,72);
Warnings:
Note 1105 xt3: 2 affected rows
Note 1105 xt3: 0 affected rows
UPDATE t1 SET msg = 'soixante' WHERE id = 60;
Warnings:
Note 1105 xt3: 1 affected rows
SELECT * FROM t1 WHERE id > 50;
id msg 60 soixante 72 number 81 eighty one
UPDATE t1 SET msg = 'big' WHERE id > 50;
Warnings:
Note 1105 xt3: 3 affected rows
UPDATE t1 SET msg = 'sept' WHERE id = 7;
Warnings:
Note 1105 xt1: 1 affected rows
SELECT * FROM t1;
id msg 1 one 10 ten 11 eleven 35 thirty five 4 four 40 forty 60 big 7 sept 72 big 8 eight 81 big
DELETE FROM t1 WHERE id in (60,72);
Warnings:
Note 1105 xt3: 2 affected rows
Note 1105 xt3: 0 affected rows
SELECT * FROM t1;
id msg 1 one 10 ten 11 eleven 35 thirty five 4 four 40 forty 7 sept 8 eight 81 big
DROP TABLE t1;
CREATE TABLE t1 (
id INT KEY NOT NULL,
msg VARCHAR(32))
ENGINE=CONNECT TABLE_TYPE=MYSQL
OPTION_LIST='connect=mysql://root@localhost/test/xt%s'
PARTITION BY RANGE COLUMNS(id) (
PARTITION `1` VALUES LESS THAN(10),
PARTITION `2` VALUES LESS THAN(50),
PARTITION `3` VALUES LESS THAN(MAXVALUE));
Warnings:
Warning 1105 Data repartition in 1 is unchecked
Warning 1105 Data repartition in 2 is unchecked
Warning 1105 Data repartition in 3 is unchecked
SELECT * FROM t1;
id msg 4 four 7 sept 1 one 8 eight 40 forty 10 ten 11 eleven 35 thirty five 81 big
DROP TABLE t1;
DROP TABLE xt1;
DROP TABLE xt2;
DROP TABLE xt3; set @@global.connect_exact_info=OFF;
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-08)
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.