] ) postgres=# alter tablespace test_tbs rename to prod_tbs; postgres=# alter tablespace test_tbs owner to test; --删除表空间 postgres=# \help drop tablespace Command: DROP TABLESPACE Description: remove a tablespace Syntax: DROP TABLESPACE [ IF EXISTS ] name postgres=# drop tablespace prod...
A regular expression is a character sequence that is an abbreviated definition of a set of strings (aregular set). A string is said to match a regular expression if it is a member of the regular set described by the regular expression. As with LIKE, pattern characters m...
citext Provides a case-insensitive character string type. 1.5 1.6 1.6 1.6 1.6 1.6 cube Provides a data type for multidimensional cubes. 1.4 1.4 1.4 1.5 1.5 1.5 hll Provides a HyperLogLog data structure. 2.18 2.18 2.18 2.18 2.18 2.18 hstore Provides a data type for storing sets of key-value...
When you run the preceding command, PostgreSQL creates aB-tree indexfor the values in theanimal_namecolumn. Part of building a B-tree index is putting the values in order. To do this for atextcolumn, PostgreSQL uses the collation to determine how to compare and order each character f...
Remove-AzResourceGroup -Name myresourcegroup To delete only the server created in this quickstart without deleting the resource group, use the Remove-AzPostgreSqlServer cmdlet.Azure PowerShell 複製 開啟Cloud Shell Remove-AzPostgreSqlServer -Name mydemoserver -ResourceGroupNam...
Similarly, the character data type (char(n)) can be expanded to varchar or text. However, such expansions require a certain amount of downtime. The duration of this downtime is directly proportional to the size of the table you’re altering. Larger tables wil...
If your server character encoding is not ascii or utf8, then you need to provide database as bytes, eg. 'my_db'.encode('EUC-JP'). port - The TCP/IP port of the PostgreSQL server instance. This parameter defaults to 5432, the registered common port of PostgreSQL TCP/IP servers. ...
and then commands to re-enable them after the data has been inserted. If the restore is stopped in the middle, the system catalogs might be left in the wrong state. The dump file produced by pg_dump does not contain the statistics used by the optimizer to make query planning decisions. ...
Always check against the Latest SNAPSHOT of JSQLParser and the Syntax Diagram Failing SQL Feature: Parenthesis in a query lead to CPU burn - my example has ((( ... ))), add more parenthesis to see significant increase in the time it take...
If you just want to remove the trailing character, set the value to TRAILING. Default value is BOTH. TRIM_CHAR The default trimming character is space, use this directive if you need to change the character that will be removed. For example, set it to - if you have leading - in the ...