qTD3Uj3tX98N2\r\n6T2Na/s1JGmlExX7Udsikv6hsoKmAjrGdDBEs2Jl/2FRnxO8uFnOuSLqvPUvlR7c\r\ndIoDq4WqVyI4sXAoUq7xB8GoTsGLANn8eYHVNsZcSZ9E0qEiWx3WqhP
`db_test`.`table3_` (`Column1`,`Column2`,`Column3`) VALUES(2,'00:00:22','b'); INSERT INTO `db_test`.`table3_` (`Column1`,`Column2`,`Column3`) VALUES(5
描述:位串进行左移操作。 示例: 1 2 3 4 5 SELECT B'10001' << 3 AS RESULT; result ---------- 01000 (1 row) >> 描述:位串进行右移操作。 示例: 1 2 3 4 5 SELECT B'10001'
schema_subquery | store_hash_par | p1 | 3 | 0 | 3 | 0 | 3 | 100.00 58430 | 58770 | schema_subquery
schema_subquery | store_hash_par | p1 | 3 | 0 | 3 | 0 | 3 | 100.00 58430 | 58770 | schema_subquery
描述:位串进行左移操作。 示例: 1 2 3 4 5 SELECT B'10001' << 3 AS RESULT; result ---------- 01000 (1 row) >> 描述:位串进行右移操作。 示例: 1 2 3 4 5 SELECT B'10001'
| sel$1 2 | -> Nested Loop (3,4) | sel$1 3 | -> Index Scan using it3 on t1@"sel$2" | sel$1 4 | ->
(hashed SubPlan 1) 2 --Seq Scan on t2@"sel$3" Filter: (c3 = 4) (4 rows) 此时v1中的语句分属于sel$2和sel$3。 部分hint无法只能在最外层生效,且不支持通过@queryblock方式指定,具体参见各自hint的语法说明。
video/m4v F4V application/f4v MPEG video/mpeg M3U8 application/octet-stream _3GP/3GP video/3gpp ASF video/x-ms-asf MKV video/x-matroska WEBM
gaussdb=# explain select /*+ GATHER(REL)*/* from t1, t2, t3 where t1.c2 = t2.c2 and t2.c2 = t3.c2; id | operation | E-rows
test_trigger_src_tbl(id1 INT, id2 INT, id3 INT); gaussdb=# CREATE TABLE test_trigger_des_tbl(id1 INT, id2 INT, id3 INT); INSERT触发器的使用。 --创建insert触发器函数。
Vhaa3BmQTNVWUNyRVFIYktQZGVtcFJISjNsZUctbjdsT1Z3ZzAifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC
-> Filter: ((tt2.a + 3) = tt3.a) (cost=0.25 rows=1) -> Index lookup on tt3 using a (a=(tt2.a + 3)) (cost=0.25 rows=1) 开
case_when_t1 VALUES (1), (2), (3); SELECT * FROM tpcds.case_when_t1; cw_col1 --------- 3 1 2 (3 rows) SELECT CW_COL1, CASE
case_when_t1 VALUES (1), (2), (3); SELECT * FROM tpcds.case_when_t1; cw_col1 --------- 3 1 2 (3 rows) SELECT CW_COL1, CASE
partition_3_part ( a INTEGER, b INTEGER, c INTEGER ) PARTITION BY HASH(a) ( PARTITION p1, PARTITION p2, PARTITION p3 );
'sachin'),(2,'sachin'),(3,'rohit'),(4,'virat'); CREATE TABLE table3(serial int, name varchar,country varchar); INSERT INTO table3 VALUES(1,'sachin'
test_trigger_src_tbl(id1 INT, id2 INT, id3 INT); gaussdb=# CREATE TABLE test_trigger_des_tbl(id1 INT, id2 INT, id3 INT); INSERT触发器的使用。 --创建insert触发器函数。
INTO case_when_t1 VALUES (1), (2), (3); openGauss=# SELECT * FROM case_when_t1; cw_col1 --------- 1 2 3 (3 rows) openGauss=# SELECT CW_COL1
'sachin'),(2,'sachin'),(3,'rohit'),(4,'virat'); CREATE TABLE table3(serial int, name varchar,country varchar); INSERT INTO table3 VALUES(1,'sachin'