DtSQL - H2 Features

 

 
 

 

 
 

Schema

Create Schema

H2 allows to create a new schema. After entering the schema name, DtSQL can generate and execute the SQL to create the new schema.

Sample : CREATE SCHEMA "TEST_SCHEMA"

Rename Schema

H2 allows to rename an existing schema. After entering the new schema name, DtSQL can generate and execute the SQL to rename the schema name.

Sample : ALTER SCHEMA "TEST_SCHEMA" RENAME TO "TESTSCHEMA"

Drop Schema

H2 allows to drop an existing schema. After entering the schema name, DtSQL can generate and execute the SQL to drop the schema.

Sample : DROP SCHEMA "TEST_SCHEMA"

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Table

Create Table

H2 allows to create a new table. After entering the table name and column information, DtSQL can generate and execute the SQL to create the table.

  • Column Name
  • Column Type
  • Length/Precesion
  • Scale (decimal)
  • Default Value
  • Nullable
  • Primary Key
  • Unique

Sample :
CREATE TABLE "TEST_SCHEMA"."TEST_TABLE" (
a bigint NOT NULL DEFAULT 1,
b char ( 12 ) NOT NULL DEFAULT 'abc',
c decimal ( 12, 2 ) ,

PRIMARY KEY ( a, b ),
UNIQUE ( b,c )
)

Rename Table

H2 allows to rename an existing table. After entering the table name, DtSQL can generate and execute the SQL to rename the table.

Sample : ALTER TABLE "TEST_SCHEMA"."TEST_TABLE" RENAME TO TESTTABLE

Truncate Table

H2 allows to truncate a table. After entering the table name, DtSQL can delete all data in the table.

Sample : TRUNCATE TABLE "TEST_SCHEMA"."TEST_TABLE"

Drop Table

H2 allows to drop an existing table. After entering the table name, DtSQL can generate and execute the SQL to drop the table.

Sample : DROP TABLE "TEST_SCHEMA"."TEST_TABLE"

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Column

Add Column

H2 allows to add a new column to an existing table. After selecting the table and entering column information, DtSQL can generate and execute the SQL to add the new column to the table.

  • Column Name
  • Column Type
  • Length/Precesion
  • Scale (decimal)
  • Default Value
  • Nullable

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
ADD
d varchar(20) NOT NULL DEFAULT 'def'

Change Data Type

H2 allows to change the column data. After selecting the new data type, DtSQL can generate and execute the SQL to change the column data type.

Sample :
ALTER TABLE "TEST_SCHEMA"."TEST_TABLE"
ALTER COLUMN F TYPE BIGINT

Drop Column

H2 allows to delete an existing column. After selecting the column, DtSQL can generate and execute the SQL to delete the column.

Sample :
ALTER TABLE "TEST_SCHEMA"."TEST_TABLE"
DROP COLUMN F

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View

Create View

H2 allows to create a new view. After entering the view name and select SQL, DtSQL can generate and execute the SQL to create the view.

Sample :
CREATE VIEW "TEST_SCHEMA"."TEST_VIEW"
AS
SELECT * FROM "TEST_SCHEMA"."TEST_TABLE"

Drop View

H2 allows to drop an existing view. After selecting the view name, DtSQL can generate and execute the SQL to delete the view.

Sample : DROP VIEW "TEST_SCHEMA"."TEST_VIEW"

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Index

Create Index

H2 allows to create a new index. After selecting the table columns and entering the view name, DtSQL can generate and execute the SQL to create the index.

Sample :
CREATE UNIQUE INDEX "TEST_SCHEMA"."TEST_INDEX"
ON TEST_SCHEMA.TEST_TABLE ( A, B DESC, C DESC )

Rename Index

H2 allows to rename an existing index. After selecting the index and entering the new index name, DtSQL can generate and execute the SQL to rename the index.

Sample : RENAME INDEX "TEST_SCHEMA"."TEST_INDEX" TO TESTINDEX

Drop Index

H2 allows to drop an existing index. After selecting the index name, DtSQL can generate and execute the SQL to delete the index.

Sample : DROP INDEX "TEST_SCHEMA"."TEST_INDEX"

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Trigger

Create Trigger

H2 allows to create a new trigger. After entering the trigger name and trigger actions, DtSQL can generate and execute the SQL to create the trigger.

Sample :
CREATE FORCE TRIGGER "TEST_SCHEMA"."TEST_TRIGGER"
AFTER INSERT
ON "TEST_SCHEMA"."TEST_TABLE"
FOR EACH ROW
CALL "org.h2.samples.TriggerSample$MyTrigger"

Drop Trigger

H2 allows to drop an existing trigger. After selecting the trigger name, DtSQL can generate and execute the SQL to delete the trigger.

Sample : DROP TRIGGER "TEST_SCHEMA"."TEST_TRIGGER"

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Constraint

Create Primary Key

H2 allows to create a primary key for a table. After selecting the table columns, DtSQL can generate and execute the SQL to create the primary key.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
ADD
PRIMARY KEY ( B, C )

Create Foreign Key

H2 allows to create a foreign key for a table to reference to another table. After selecting the table columns and referenced table columns, DtSQL can generate and execute the SQL to create the foreign key.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
ADD
FOREIGN KEY ( A, C )
REFERENCES "TEST_SCHEMA"."TEST_TB" (B, A )

Create Check Constraint

H2 allows to create a check constraint for a table column. After entering the check constraint name and check action, DtSQL can generate and execute the SQL to create the check constraint.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
ADD CONSTRAINT TEST_CHECK
CHECK ( C > 10 )

Create Unique Constraint

H2 allows to create an unique constraint for a table columns. After entering the unique constraint name and selecting table columns, DtSQL can generate and execute the SQL to create the unique constraint.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
ADD CONSTRAINT TEST_UNIQUE
UNIQUE ( B, C )

Drop Primary Key

H2 allows to drop an existing primary key. After selecting the primary key, DtSQL can generate and execute the SQL to delete the primary key.

Sample : ALTER TABLE "TEST_SCHEMA"."TEST_TABLE"
DROP CONSTRAINT CONSTRAINT_2

Drop Foreign Key

H2 allows to drop an existing foreign key. After selecting the foreign key, DtSQL can generate and execute the SQL to delete the foreign key.

Sample :
ALTER TABLE "TEST_SCHEMA"."TEST_TABLE"
DROP CONSTRAINT CONSTRAINT_3

Drop Check Constraint

H2 allows to drop an existing check constraint. After selecting the check constraint, DtSQL can generate and execute the SQL to delete the check constraint.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
DROP CONSTRAINT TEST_CHECK

Drop Unique Constraint

H2 allows to drop an existing unique constraint. After selecting the unique constraint, DtSQL can generate and execute the SQL to delete the unique constraint.

Sample :
ALTER TABLE
"TEST_SCHEMA"."TEST_TABLE"
DROP CONSTRAINT TEST_UNIQUE

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Function

Drop Function

H2 allows to drop an existing function. After selecting the function, DtSQL can generate and execute the SQL to delete the function.

Sample : DROP ALIAS "TEST_FUNC"

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Sequence

Create Sequence

H2 allows to create sequences. After entering the sequence parameters, DtSQL can generate and execute the SQL to create the sequence.

Sample :
CREATE SEQUENCE "TEST_SCHEMA"."TEST_SEQ"
START WITH 10
INCREMENT BY 2
CACHE 20

Drop Sequence

H2 allows to drop an existing sequence. After selecting the sequence, DtSQL can generate and execute the SQL to delete the sequence.

Sample : DROP SEQUENCE "TEST_SCHEMA"."TEST_SEQ"

 

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