psql -X -v a=b \echo THE VALUE OF VAR a IS :a psql -X --set=a=c 举例:我们想将多个字段传入到PG内,可以将多个值进行引号设置即可 [postgres@pg_qixun ~]$ psql -X -v a='postgresql EDB enterprise database' psql (14.7) Type "help" for help. postgres=# \echo The variable a is ...
postman.setGlobalVariable("变量名",变量值) postman.setGlobalVariable("value","test"+(parseInt (Math.random()*100)));//*100是指只取0~99之间的随机值 //写法2 官方推荐 pm.globals.set("value", "test"+(parseInt (Math.random()*100))); 1. 2. 3. 4. 5. //取响应body值: var jsonDat...
如果stmt->kind为VAR_SET_VALUE和VAR_SET_CURRENT,则调用set_config_option函数; 如果stmt->kind为VAR_SET_MULTI,如果stmt->name为TRANSACTION则调用SetPGVariable函数,如果stmt->name为SESSION CHARACTERISTICS,则调用SetPGVariable函数,如果stmt->name为TRANSACTION SNAPSHOT,则调用ImportSnapshot函数; 如果stmt->kind为...
command (SQL or internal) and exit -d, --dbname=DBNAME database name to connect to (default: "postgres") -f, --file=FILENAME execute commands from file, then exit -l, --list list available databases, then exit -v, --set=, --variable=NAME=VALUE set psql variable NAME to VALUE (...
ALTER DATABASE name SET parameter { TO | = } { value | DEFAULT } ALTER DATABASE name RESET parameter ALTER DATABASE name RENAME TO new_name ALTER DATABASE name OWNER TO new_ownerALTER DEFAULT PRIVILEGES定义默认的访问权限。ALTER DEFAULT PRIVILEGES [ FOR { ROLE | USER } target_role [, ....
--|->|variable_value||--->|execute|--||---||--- --|||--|---|||--|||v --|||--- --||<---|--->|fetch_rows|--|||--- --|||--|||v --|||--- --|||column_value|--|||variable_value|--|||--- --|||--||<...
-D varname=value--define=varname=valueDefineavariableforusebyacustom script (see below). Multiple -D options are allowed. 2、benchmark脚本内变量,表达式的值赋予给变量 \setvarnameexpress 3、pgbench 自带的两个变量(一个是指client id, 每个连接一个,另一个是scale factor,即pgbench -s 输入的值。
hstore –introduce you to the hstore data type, a set of key/value pairs stored in a single value in PostgreSQL. JSON –illustrate how to work with JSON data type and use some of the most important JSON operators and functions. User-defined data types –show you how to use the CREATE...
Alter SEQUENCE sequencename START value; 62.查看sequence当前值 SELECT currval('sequencename'); 63.查看sequence下一值 SELECT nextval('sequencename'); 64.设置sequence当前值 alter SEQUENCE sequencename restart with startvalue; SELECT nextval('sequencename'); ...
1247.00 0.5% 0000000000577650 hash_search_with_hash_value.constprop.929 /home/digoal/pgsql9.6/bin/postgres 1220.00 0.5% 0000000000538a10 AllocSetFree.lto_priv.1187 /home/digoal/pgsql9.6/bin/postgres 1201.00 0.5% 0000000000389660 ExecModifyTable /home/digoal/pgsql9.6/bin/postgres ...