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Storage | Stats target | Description --------+---------+-----------+----------+--------------+------------- id | integer | | plain
返回值类型:bytea 示例: 1 2 3 4 5 openGauss=# SELECT substrb('ABCDEF',2,2); substrb --------- BC (1 row) trim([leading |trailing |both] [characters
INFO 'col_type = %', rec.col_type; raise INFO 'col_name = %', rec.col_name; raise INFO 'col_name_len
Storage | Stats target | Description --------+---------+-----------+----------+--------------+------------- id | integer | | plain
id = DBE_TASK.JOB_SUBMIT( gaussdb$# what => 'insert into t1 values (1, 2)', gaussdb$# job_interval => 'sysdate + 1' --daily
id = DBE_TASK.JOB_SUBMIT( gaussdb$# what => 'insert into t1 values (1, 2)', gaussdb$# job_interval => 'sysdate + 1' --daily
默认值:200 dcf_flow_control_disk_rawait_threshold 参数说明:DCF流控功能的磁盘等待阈值。 该参数属于SIGHUP类型参数,请参见表1中对应设置方法进行设置。 取值范围:整型,单位us,0~2147483647。
默认值:200 dcf_flow_control_disk_rawait_threshold 参数说明:DCF流控功能的磁盘等待阈值。 该参数属于SIGHUP类型参数,请参考表1中对应设置方法进行设置。 取值范围:整型,单位us,0~2147483647。
id = DBE_TASK.JOB_SUBMIT( gaussdb$# what => 'insert into t1 values (1, 2)', gaussdb$# job_interval => 'sysdate + 1' --daily
INFO 'col_type = %', rec.col_type; raise INFO 'col_name = %', rec.col_name; raise INFO 'col_name_len
返回值类型:bytea 示例: 1 2 3 4 5 openGauss=# SELECT substrb('ABCDEF',2,2); substrb --------- BC (1 row) trim([leading |trailing |both] [characters
gaussdb=# EXPLAIN SELECT * FROM t1 WHERE b='now'::date; QUERY PLAN ----------------------------------------------------- Seq Scan on t1 (cost
gaussdb=# EXPLAIN SELECT * FROM t1 WHERE b='now'::date; QUERY PLAN ----------------------------------------------------- Seq Scan on t1 (cost
DECLARE f integer; dir text := 'dir'; BEGIN f := dbe_file.open(dir, 'sample.txt', 'r'); FOR i IN 1..11 LOOP RAISE INFO '[%] :
DECLARE f integer; dir text := 'dir'; BEGIN f := dbe_file.open(dir, 'sample.txt', 'r'); FOR i IN 1..11 LOOP RAISE INFO '[%] :
避免设置明显不合理(过大或过小)的wal_buffers值,应满足条件:data_replicate_buffer_size + segment_buffers + shared_buffers + wal_buffers + temp_buffers + maintenance_work_mem
-- 均不反解析,DCL为不支持语句故不解析,DML处于DCL之后也不反解析 gaussdb=# BEGIN; gaussdb=# GAINT ALL PRIVILEGES to u01; gaussdb=# INSERT INTO test1(col1) values(1); gaussdb
text, password text default NULL, database_role text default NULL, windows_domain
例如: 1 2 3 4 5 6 7 gaussdb=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup()); NOTICE: pg_stop_backup cleanup done, waiting for required
例如: 1 2 3 4 5 6 7 gaussdb=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup()); NOTICE: pg_stop_backup cleanup done, waiting for required