ltrim(x,y)鍑芥暟

ltrim(x,y) 鍑芥暟鏄寜鐓涓殑瀛楃涓�涓竴涓埅鎺墄涓殑瀛楃锛屽苟涓旀槸浠庡乏杈瑰紑濮嬫墽琛岀殑锛屽彧瑕侀亣鍒皔涓湁鐨勫瓧绗︼紝x涓殑瀛楃閮戒細琚埅鎺夛紝鐩村埌鍦▁鐨勫瓧绗︿腑閬囧埌y涓病鏈夌殑瀛楃涓烘鍑芥暟鍛戒护鎵嶇粨鏉� 銆�

鍙傞槄Oracle庐 Database SQL Reference

10g Release 2 (10.2)

Part Number B14200-02

涓墍璇寸殑

LTRIM鐨勫師鍨嬫槸LTRIM(char [, set ])

LTRIM removes from the left end of char all of the characters contained in set. If you do not specify set, it defaults to a single blank. If char is a character literal, then you must enclose it in single quotes. Oracle Database begins scanning char from its first character and removes all characters that appear in set until reaching a character not in set and then returns the result.

LTRIM鍑芥暟鐨勭浜屼釜鍙傛暟瀹為檯涓婃槸涓泦鍚堬紝Oracle鏁版嵁搴撲細浠巆har鐨勭涓�涓瓧绗﹀紑濮嬫壂鎻忥紝绉婚櫎鎺塻et闆嗗悎涓嚭鐜扮殑瀛楃锛岀洿鍒伴亣鍒颁竴涓笉鍦╯et闆嗗悎涓殑瀛楃涓烘銆�

你可能感兴趣的:(ltrim(x,y)鍑芥暟)