Oracle DECODE() function examples# Let’s take some examples of using theDECODE()function to see how it works. Use DECODE() function to make data more meaningful# See the followinglocationstable in thesample database: The following statements return the country that has at least two locations ...
可以使用case条件语句调用存储过程和函数。 DECODE的用法: DECODE(value, search_value, result, default_value) compares value with search_value. If the values are equal, DECODE() returns result, otherwise default_value is returned. DECODE() allows you to perform if-then-else logic in SQL without ...
The decode function can be used in SQL for and IF-THEN-ELSE construction. It's an alternative for the CASE statement which was introduced in Oracle 8. Syntax: decode( expression , compare_value, return_value, [,compare, return_value] ... [,default_return_value] ) with: expression is t...
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Some functions which are similar to the COALESCE function are: NVL– substitutes a value if a NULL value is found DECODE: Translates a value to another value based on certain conditions. CASE: This statement performs IF THEN ELSE functionality in Oracle....
DECODE(AA﹐V1﹐R1﹐V2﹐R2...)函数 解释: IF AA=V1 THEN RETURN R1 IF AA=V2 THEN RETURN R2 ..… ELSE RETURN NULL LPAD(char1,n,char2)函数 解释: 字符char1按制定的位数n显示,不足的位数用char2字符串替换左边的空位 字段名之间可以进行算术运算 例如...
select lpad(' ',2*(level-1))||level||'.'||position||' '|| operation||' '|| decode(options, null, null, options || ' ') || object_name plan from xres start with id = 1 connect by prior id = parent_id; Which produces the following plan: ...
The following functions can be used as default values during table structure synchronization: decode, nvl, nvl2, instr, substr, to_char, to_date, to_timestamp, length, lengthb, sysdate, trunc, nullif, next_day, regexp_instr, add_months, systimestamp, to_number, empty_clob and empty_blob...
Encode and decode URLs Get the common list of time zones and linguistic sortsFor example, when you want to display a date in your application, you may want to call the Localizer.formatDate() or Localizer.formateDateTime() methods. When you want to determine the writing direction of the cur...
()) base64string = base64digest.decode("utf-8") request.headers["x-content-sha256"] = base64string request.headers.setdefault("content-length", len(body)) def __call__(self, request): verb = request.method.lower() # nothing to sign for options if verb == "options": return ...