CREATE TABLE films ( code char(5), title varchar(40), did integer, date_prod date, kind varchar(10), len interval hour to minute);建表语句执行parse_analyze函数时进入传统的transform阶段时并没有执行任何trasform功能的函数,而是直接走transformStmt函数的default分支:创建Query节点,让原...
queryString=0x234add0 "CREATE TABLE films ( code char(5), title varchar(40), did integer, date_prod date, kind varchar(10), len interval hour t o minute);", context=PROCESS_UTILITY_TOPLEVEL, params=0x0, queryEnv=0x0, dest=0x2408658, completionTag=0x7ffcf8fb0e60 "") at utility.c...
table_name:Specify the name of the table after CREATE TABLE statement. The table name must be unique in the database. The query will return an error if the table with the same name exists on the database. We can use the IF NOT EXISTS to avoid such errors, this option allows us to ...
CREATETABLE almart_2015_12_10 () inherits (almart); CREATETABLE almart_2015_12_11 () inherits (almart); CREATETABLE almart_2015_12_12 () inherits (almart); CREATETABLE almart_2015_12_13 () inherits (almart); 3. 为分区表添加限制 。这些限制决定了该表所能允许保存的数据集范围。这里必须保...
postgres=*# explainselectcount(*)frombmscantestwherea>1;QUERY PLAN---Finalize Aggregate(cost=1968.35..1968.36rows=1width=8)->Gather(cost=1568.33..1968.34rows=4width=8)Workers Planned:4->Partial Aggregate(cost=1568.33..1568.34rows=1width=8)->Parallel Seq Scanonbmscantest(cost=0.00..1547.50rows...
If you want to find the create statement for a table without using pg_dump, This query might work for you (change 'tablename' with whatever your table is called): SELECT 'CREATE TABLE ' || relname || E'\n(\n' || array_to_string( array_agg( ' ' || column_name ...
Welcome to psql 8.0.6, the PostgreSQL interactive terminal. Type: \copyright for distribution terms \h for help with SQL commands \? for help with psql commands \g or terminate with semicolon to execute query \q to quit 连接成功之后所有的命令都是使用”\“+ 字符或者word完成相应的功能。现将...
*/ uint64 queryId; /* query identifier (can be set by plugins) */ bool canSetTag; /* do I set the command result tag? */ Node *utilityStmt; /* non-null if commandType == CMD_UTILITY */ int resultRelation; /* rtable index of target relation for * INSERT/UPDATE/DELETE; 0 for...
user><password>qwerty</password><replica><host>example01-1</host><priority>1</priority></replica><replica><host>example01-2</host><priority>2</priority></replica><db>db_name</db><table>table_name</table><where>id=10</where><invalidate_query>SQL_QUERY</invalidate_query></postgresql><...
user><password>qwerty</password><replica><host>example01-1</host><priority>1</priority></replica><replica><host>example01-2</host><priority>2</priority></replica><db>db_name</db><table>table_name</table><where>id=10</where><invalidate_query>SQL_QUERY</invalidate_query></postgresql><...