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= nil { log.Fatal(err) } else { fmt.Printf("var1:%v, var2:%v, var3:%v\n", var1, var2, var3) } } Preparing the Encrypted Table // Call the Prepare method of the database instance to create a prepared object. delete_stmt, err := db.Prepare("delete from creditcard_info
The result is random and different each time. gaussdb=# SELECT col8 FROM tb_for_masking; col8 -------------------- cf32a9aa427f219ab0 (1 row) gaussdb=# SELECT col8 FROM tb_for_masking; col8 -------------------- 13efa056dda1e1a474 (1 row) Delete data
the compfoo1 type. openGauss=# DROP TYPE usr1.compfoo1 cascade; Delete related tables and users. openGauss=# DROP TABLE t1_compfoo; openGauss=# DROP TABLE t2_compfoo; openGauss=# DROP SCHEMA usr1; openGauss=# DROP USER usr1; -- Create an enumerated type. openGauss=# CREATE TYPE
If a function is defined as IMMUTABLE or SHIPPABLE, avoid INSERT, UPDATE, DELETE, MERGE, and DDL operations in the function because the CN needs to determine the execution node for these operations. Otherwise, an error may occur.
Function Plan hints are specified in the following format after keywords such as SELECT, INSERT, UPDATE, DELETE, and MERGE: 1 /*+ <plan hint>*/ You can specify multiple hints for a query plan and separate them by spaces.
Operations such as SELECT, UPDATE, INSERT, and DELETE can be performed on XML data. The prerequisite is that you have connected to the database using the connection object conn.
The next 1-byte letter can be B, C, I, U, or D, representing BEGIN, COMMIT, INSERT, UPDATE, or DELETE, respectively. If B is used in Step 3: The next eight bytes (uint64) indicate the CSN. The next eight bytes (uint64) indicate first_lsn.
VALUES(100, 10, 1000, 10000, 200, 2000); -- View data. b_database=# SELECT * FROM int_type_t2; a | b | c | d | e | f -----+----+------+--------+-----+------ 100 | 10 | 1000 | 10000 | 200 | 2000 (1 row) -- Drop the table. b_database=# DROP TABLE int_type_t2; -- Delete
The DML statements include the UPDATE, INSERT, DELETE, MERGE, PREPARE, EXPLAIN, SHOW, LOCK, COPY, CLUSTER, ANONYMOUS, DELTA, EXECUTE, MOVE, FETCH, CLOSE, DEALLOCATE, DECLARE, and LOAD statements.
If you want to use EXPLAIN ANALYZE on an INSERT, UPDATE, DELETE, CREATE TABLE AS, or EXECUTE statement without letting the statement affect your data, use the following approach: START TRANSACTION; EXPLAIN ANALYZE ...; ROLLBACK; The DETAIL, NODES, and NUM_NODES parameters cannot be
Otherwise, the performance of DML operations such as INSERT, UPDATE, and DELETE may be affected. Syntax Rename a table index. ALTER INDEX [ IF EXISTS ] index_name RENAME TO new_name; Change the tablespace to which a table index belongs.
If the third digit is 1, a delete operation is recorded. If the second digit is 1, an insert operation is recorded. Example: When enable_htap is set to off: gaussdb=# select * from gs_htap_tmu_data(16796,0); ERROR: Query failed due to ENABLE_HTAP is not enabled.
CsnMinLock Used to control the concurrent access and storage of CSN MIN HypoIndexLock Used to create, delete and reset the virtual index by the lightweight lock. XGBoostLibLock Used by DB4AI to call the XGBoost library.
This parameter is invalid for UPDATE and DELETE on old tuples, and the corresponding tuples always output the stored generated columns. Value range: Boolean.
VALUES(100, 10, 1000, 10000, 200, 2000); -- View data. b_database=# SELECT * FROM int_type_t2; a | b | c | d | e | f -----+----+------+--------+-----+------ 100 | 10 | 1000 | 10000 | 200 | 2000 (1 row) -- Drop the table. b_database=# DROP TABLE int_type_t2; -- Delete
If the UPDATE GLOBAL INDEX clause is not used when you delete, split, clear, or exchange partitions, concurrent DML services may report errors due to invalidated indexes.
If this parameter is not supported, delete it from the configuration file first before proceeding with the upgrade. Parent topic: Connection and Authentication
Operations such as SELECT, UPDATE, INSERT, and DELETE can be performed on XML data. The prerequisite is that you have connected to the database using the connection object conn.
The insertion fails because parameter types are inconsistent. gaussdb=# insert into t1(id, set) values (1, hll_empty(14,5)); ERROR: log2explicit does not match: source is 5 and dest is 10 -- Delete the table. gaussdb=# drop table t1; The following describes HLL application scenarios
If the UPDATE GLOBAL INDEX clause is not used when you delete, split, merge, clear, or exchange partitions, concurrent DML services may report errors due to invalidated indexes.
