標籤:基礎函數及解析可參考:http://blog.csdn.net/snn1410/article/details/7741283PostgreSQL內建to_date(text, text)、to_timestamp(text, text);不存在to_time函數 需求:08:30-20:30 → A20:30-08:30 → B 指令碼:SELECT( CASE WHEN (to_char(finished - time ‘08:30‘,
標籤:在利用postGIS匯入shapefile檔案到postgresql資料庫的時候,老是提示字串的問題,或者是亂碼,試了好幾種都不行,於是度娘之。。。。使用預設的UTF8,提示資訊是:建議使用LATIN1;Unable to convert data value to UTF-8 (iconv reports "Illegal byte sequence"). Current encoding is "UTF-8". Try "LATIN1" (Western European), or
標籤:SELECT * from pg_class c,pg_attribute a,pg_type t where c.relname=‘BookKindList‘ and a.attnum>0 and a.attrelid=c.oid and a.atttypid=t.oidSELECT a.attname from pg_class c,pg_attribute a,pg_type t where c.relname=‘BookKindList‘ and a.attnum>0
標籤:--啟動資料庫./bin/aty_ctl -D data -l arterydb.log start--串連資料庫./bin/atysql -d artery--設定環境變數export LD_LIBRARY_PATH=‘/home/arterydb/lib‘--刪除表DROP TABLE table_name;--查詢表是否存在select count(*) into FYDM from information_schema.tables where
標籤:postgresql允許遠端存取配置修改postgresql預設情況下,遠端存取不能成功,如果需要允許遠端存取,需要修改兩個設定檔,說明如下:1.postgresql.conf將該檔案中的listen_addresses項值設定為“*”,在9.0 Windows版中,該項配置已經是“*”無需修改。2.pg_hba.conf在該設定檔的host all all 127.0.0.1/32
標籤:postgresqlPG 系統查詢指令碼--查詢使用者進程及文本SELECT a.pid AS Id, a.usename AS User, a.client_addr AS Host, a.client_port AS Port, datname AS db, query AS Command, a.state AS Idle, l.mode as State, query_start AS Time, CASE WHEN c.relname IS NOT NULL THEN '
標籤:DROP命令(Commands)實現:/* * Drop one or more objects. * * We don't currently handle all object types here. Relations, for example, * require special handling, because (for example) indexes have additional * locking requirements. * * We look up