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Testing simple DROP
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a INT NOT NULL, PRIMARY KEY(a));
DROP TABLE t1;
Check transaction_log_entries
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_ENTRIES;
COUNT(*)
3
Check transaction_log_transactions
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS;
COUNT(*)
3
Check transaction log contents
SELECT PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS));
PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS))
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t1"
}
if_exists_clause: false
}
}
SET GLOBAL transaction_log_truncate_debug= true;
Testing multi-table DROP
DROP TABLE IF EXISTS t1, t2, t3;
CREATE TABLE t1(a INT NOT NULL, PRIMARY KEY(a));
CREATE TABLE t2 LIKE t1;
CREATE TABLE t3 LIKE t2;
DROP TABLE t1, t2, t3;
SELECT PRINT_TRANSACTION_MESSAGE('transaction.log', entry_offset) FROM DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS ORDER BY TRANSACTION_ID DESC LIMIT 3;
PRINT_TRANSACTION_MESSAGE('transaction.log', entry_offset)
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t3"
}
if_exists_clause: false
}
}
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t2"
}
if_exists_clause: false
}
}
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t1"
}
if_exists_clause: false
}
}
SET GLOBAL transaction_log_truncate_debug= true;
Testing DROP IF EXISTS positive
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a INT NOT NULL, PRIMARY KEY(a));
DROP TABLE IF EXISTS t1;
Check transaction_log_entries
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_ENTRIES;
COUNT(*)
3
Check transaction_log_transactions
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS;
COUNT(*)
3
Check transaction log contents
SELECT PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS));
PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS))
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t1"
}
if_exists_clause: true
}
}
SET GLOBAL transaction_log_truncate_debug= true;
Testing DROP IF EXISTS negative
DROP TABLE IF EXISTS t1;
Warnings:
Note 1051 Unknown table 't1'
Check transaction_log_entries
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_ENTRIES;
COUNT(*)
1
Check transaction_log_transactions
SELECT COUNT(*) FROM DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS;
COUNT(*)
1
Check transaction log contents
SELECT PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS));
PRINT_TRANSACTION_MESSAGE('transaction.log',(select max(entry_offset) from DATA_DICTIONARY.TRANSACTION_LOG_TRANSACTIONS))
transaction_context {
server_id: 1
TRANSACTION_ID
START_TIMESTAMP
END_TIMESTAMP
}
statement {
type: DROP_TABLE
START_TIMESTAMP
END_TIMESTAMP
drop_table_statement {
table_metadata {
schema_name: "test"
table_name: "t1"
}
if_exists_clause: true
}
}
SET GLOBAL transaction_log_truncate_debug= true;
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