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Customize the navigation tree.

Navigation tree

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Servers display options.

Servers

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Databases display options.

Databases

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Tables display options.

Tables

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Table structure

Settings for the table structure (list of columns).

Table structure

Default transformations
Hide table structure actions Whether the table structure actions should be hidden.
Show column comments Whether column comments should be shown in table structure view
Default transformations for Hex Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	2
Default transformations for Substring Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	0 all …
Default transformations for Bool2Text Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	T F
Default transformations for External Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	0 -f /dev/null -i -wrap -q 1 1
Default transformations for PreApPend Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.
Default transformations for DateFormat Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	0 local
Default transformations for Inline Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	100 100
Default transformations for TextImageLink Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.	100 50
Default transformations for TextLink Values for options list for default transformations. These will be overwritten if transformation is filled in at table structure page.

class_instances

#	Name	Type	Collation	Null	Default	Comments	Action
1	id	varchar(64)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
2	rule_id	varchar(64)	utf8mb4_general_ci	Yes	NULL	Source recurring rule; NULL if ad-hoc	Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
3	class_date	date		No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
4	start_time	varchar(10)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
5	end_time	varchar(10)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
6	name	varchar(255)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
7	type	varchar(50)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
8	location	varchar(255)	utf8mb4_general_ci	Yes	NULL		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
9	batch_id	varchar(64)	utf8mb4_general_ci	Yes	NULL		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
10	batch_name	varchar(255)	utf8mb4_general_ci	Yes	NULL		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
11	coach_id	varchar(64)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
12	coach_name	varchar(255)	utf8mb4_general_ci	No	None		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
13	capacity	int(11)		No	20		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
14	enrolled_members	longtext	utf8mb4_bin	Yes	NULL		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
15	attendance_records	longtext	utf8mb4_bin	Yes	NULL		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
16	current_attendance	int(11)		Yes	0		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
17	status	enum('scheduled', 'completed', 'cancelled')	utf8mb4_general_ci	Yes	scheduled		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
18	locked_at	datetime		Yes	NULL	After this time, attendance is read-only	Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns
19	created_at	datetime		Yes	current_timestamp()		Change	Drop	Primary Unique Index Spatial Fulltext Distinct values Add to central columns

Check all With selected:

Propose table structure

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Indexes

The indexes idx_class_instances_batch and idx_batch seem to be equal and one of them could possibly be removed.

The indexes idx_class_instances_coach and idx_coach seem to be equal and one of them could possibly be removed.

The indexes idx_class_instances_date and idx_class_date seem to be equal and one of them could possibly be removed.

Action			Keyname	Type	Unique	Packed	Column	Collation	Null
Edit	Rename	Drop	PRIMARY	BTREE	Yes	No	id	A	No
Edit	Rename	Drop	idx_class_instances_date	BTREE	No	No	class_date	A	No
Edit	Rename	Drop	idx_class_instances_rule	BTREE	No	No	rule_id	A	Yes
Edit	Rename	Drop	idx_class_instances_coach	BTREE	No	No	coach_id	A	No
Edit	Rename	Drop	idx_class_instances_batch	BTREE	No	No	batch_id	A	Yes
Edit	Rename	Drop	idx_class_date	BTREE	No	No	class_date	A	No
Edit	Rename	Drop	idx_status	BTREE	No	No	status	A	Yes
Edit	Rename	Drop	idx_coach	BTREE	No	No	coach_id	A	No
Edit	Rename	Drop	idx_batch	BTREE	No	No	batch_id	A	Yes

Partitions

No partitioning defined!

Information

Space usage
Optimize table
Data	16.0	KiB
Index	128.0	KiB
Overhead	0	B
Effective	144.0	KiB
Total	144.0	KiB

Row statistics
Format	dynamic
Collation	utf8mb4_general_ci
Next autoindex	0
Creation	Apr 08, 2026 at 12:14 AM
Last update	Apr 18, 2026 at 03:28 PM
Last check	Apr 18, 2026 at 03:28 PM