trim_character参数改变了“删除空格”的默认行为。如果想要删除字符串'xxxxWORLDxxxx'前后出现的“x”,“trim_character”参数就派上用场了。 SQL> select trim('x' from 'xxxxWORLDxxxx') aaaaa from dual; AAAAA --- WORLDtrim_character配合“both”、“trailing”和“leading”三个参数使用效果如下,与之前演...
CREATE VIEW WITH PRIMARY KEY CREATE/ALTER PROCEDURE' must be the first statement in a query batch. Create/Alter view with declare variable Created a new column in a select statement .How to use that column name in CASE statement in the same select staetment Creating a blank text file using...
REPLACE, CREATE, INSERT_UPDATE, or REPLACE_CREATE. For LOAD, theAction Stringparameter does not contain the keyword INSERT, REPLACE, or RESTART. The keyword must be followed by at least one blank.
Replaces all occurrences of a specified string value with another string value. Transact-SQL Syntax Conventions Syntax Copy REPLACE (string_expression,string_pattern,string_replacement) Arguments string_expression Is the string expression to be searched. string_expression can be of a character or ...
LEFTREPLACEREVERSERIGHTSUBSTRINGSTUFF These functions treat each surrogate pair as a single code point and work as expected. These functions might split any surrogate pairs and lead to unexpected results. NCHAR Returns the character that corresponds to the specified Unicode code point value in the ran...
QUOTENAME('character_string'[ ,'quote_character'] ) 引數 'character_string' 這是Unicode 字元資料的字串。character_string是sysname,且限制為 128 個字元。 大於 128 個字元的輸入會傳回 NULL。 'quote_character' 這是用來當做分隔符號的單字元字串。 它可以是單引號 (')、左或右方括弧 ([])、雙...
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QUOTENAME('character_string'[ ,'quote_character'] ) 参数 'character_string' Unicode 字符数据构成的字符串。 character_string 是 sysname,且最多具有 128 个字符 。 超过 128 个字符的输入将返回 NULL。 'quote_character' 用作分隔符的单字符字符串。 可以是单引号 (')、左方括号或右方括号 ([])、双...
If you want to change the DIR_TYPE value, make sure the DIR_PATH_NAME and DIR_OBJ_NAME parameters have been specified with the valid values first. If you want to blank out either the DIR_PATH_NAME or the DIR_OBJ_NAME parameter, make sure you set DIR_TYPE to NONE first. ...
SQL*Loader-00202: shift-based character sets not supported with CSV format files with embedded record terminators\n Cause: A CSV format file with embedded record terminators was specified with a shift-based character set. Action: Either use a nonshift-based character set or do not use CSV ...