Oracle 多参数查询语句

CREATE OR REPLACE FUNCTION f_get_param(       IN_PARAM IN VARCHAR2,       IN_FLAG IN VARCHAR2) RETURN VARCHAR2 IS RESULT VARCHAR2(500); v_leng NUMBER; v_left NUMBER; v_right NUMBER; v_param VARCHAR2(200); v_param1 VARCHAR2(200); BEGION  RESULT := '';  v_param:=IN_PARAM;  v_leng := LENGTH(v_param);  v_left := instr(v_param,in_flag);  IF v_left > 0 THEN   v_param1 := substr(v_param,v_left,v_leng - v_left +1)   v_left := instr(v_param1,':') + 1;   v_right := indtr(v_param1,'$');   RESULT := substr(v_param1,v_left,v_right-v_left)  END IF;  RETURN(RESULT);  EXCEPTION   WHEN OTHERS THEN   RETURN ''; END f_get_param; //数据库赋值格式 f_get_param(v_param,'materialtype:');//器件编码类型 //数据库展示 public string BuildToParams(ListArgs Args) {   string params = '$';   if(Args != null)   {     if(!string.isNotEmpty(Args.MaterailType))     {       params = params + 'materialtypes:' + Args.MaterailType + '$';     }   }   return params; } //Oracle 数据库拓展-多选参数 SELECT instr(',' || '1,2,3,21' || ',',',' || '1' || ',') FROM DUAL SELECT * FROM table_name where instr(',' || list_id || ',',',' || id || ',') > 0 //Oarcle 多条件','隔开查询  select distinct regexp_substr('我爱你'，'[^.]+',1,rownum) xyz_name From dual connect by rownum <= length('我爱你') - length(replace('我爱你',',')) + 1