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transaction.txt
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transaction.txt
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================================================================================
Empty transaction
================================================================================
BEGIN;
COMMIT;
--------------------------------------------------------------------------------
(program
(transaction
(keyword_begin)
(keyword_commit)))
================================================================================
Transaction begin and commit
================================================================================
BEGIN;
ALTER TABLE my_table
ADD COLUMN val3 VARCHAR(100) NOT NULL;
UPDATE my_table SET val3 = 'new';
COMMIT;
--------------------------------------------------------------------------------
(program
(transaction
(keyword_begin)
(statement
(alter_table
(keyword_alter)
(keyword_table)
(object_reference
name: (identifier))
(add_column
(keyword_add)
(keyword_column)
(column_definition
name: (identifier)
type: (varchar
(keyword_varchar)
size: (literal))
(keyword_not)
(keyword_null)))))
(statement
(update
(keyword_update)
(relation
(object_reference
name: (identifier)))
(keyword_set)
(assignment
left: (field
name: (identifier))
right: (literal))))
(keyword_commit)))
================================================================================
Transaction begin and rollback
================================================================================
BEGIN;
ALTER TABLE my_table
ADD COLUMN val3 VARCHAR(100) NOT NULL;
ROLLBACK;
--------------------------------------------------------------------------------
(program
(transaction
(keyword_begin)
(statement
(alter_table
(keyword_alter)
(keyword_table)
(object_reference
name: (identifier))
(add_column
(keyword_add)
(keyword_column)
(column_definition
name: (identifier)
type: (varchar
(keyword_varchar)
size: (literal))
(keyword_not)
(keyword_null)))))
(keyword_rollback)))
================================================================================
Use explicit transaction keywords
================================================================================
BEGIN TRANSACTION;
ALTER TABLE my_table
ADD COLUMN val3 VARCHAR(100) NOT NULL;
ROLLBACK TRANSACTION;
--------------------------------------------------------------------------------
(program
(transaction
(keyword_begin)
(keyword_transaction)
(statement
(alter_table
(keyword_alter)
(keyword_table)
(object_reference
name: (identifier))
(add_column
(keyword_add)
(keyword_column)
(column_definition
name: (identifier)
type: (varchar
(keyword_varchar)
size: (literal))
(keyword_not)
(keyword_null)))))
(keyword_rollback)
(keyword_transaction)))