The SQL SUBSTRING function is a crucial tool in the database developer's arsenal. It allows one to extract a portion of a string, given a starting point and a length. 💡 This is particularly useful when working with long strings or when one only needs specific parts of the data....
SUBSTRING(expression, starting_position, length):返回部分字符串,从字符串左边第starting_position个字符到length个字符的部分。表达式可为字符串或二进制串货含字段名的表达式。SUBSTRING函数不能用于TEXT和IMAGE数据类型 字符串比较函数 CHARINDEX(substring_expression, expression):返回字符串中某个指定的子串出现的开始位...
//新版已经没有调用substring了,改为调用如下的offset方式,提高了效率 //issue #760 builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { int end = text.indexOf(closeToken, start); if (end == -1) { builder.append(src, offs...
SQL_FN_STR_OCTET_LENGTH (ODBC 3.0)SQL_FN_STR_POSITION (ODBC 3.0)SQL_FN_STR_REPEAT (ODBC 1.0)SQL_FN_STR_REPLACE (ODBC 1.0)SQL_FN_STR_RIGHT (ODBC 1.0)SQL_FN_STR_RTRIM (ODBC 1.0)SQL_FN_STR_SOUNDEX (ODBC 2.0)SQL_FN_STR_SPACE (ODBC 2.0)SQL_FN_STR_SUBSTRING (ODBC 1.0)SQL_FN_...
字符串数据长度不匹配(STRING_DATA_LENGTH_MISMATCH) 22028 正则表达式不匹配(ERRCODE_REGEXP_MISMATCH) 22001 字符串数据右截断(STRING_DATA_RIGHT_TRUNCATION) 22011 抽取子字符串错误(SUBSTRING_ERROR) 22027 截断错误(TRIM_ERROR) 22024 未结束的C字符串(UNTERMINATED_C_STRING) ...
SQL_FN_STR_OCTET_LENGTH (ODBC 3.0)SQL_FN_STR_POSITION (ODBC 3.0)SQL_FN_STR_REPEAT (ODBC 1.0)SQL_FN_STR_REPLACE (ODBC 1.0)SQL_FN_STR_RIGHT (ODBC 1.0)SQL_FN_STR_RTRIM (ODBC 1.0)SQL_FN_STR_SOUNDEX (ODBC 2.0)SQL_FN_STR_SPACE (ODBC 2.0)SQL_FN_STR_SUBSTRING (ODBC 1.0)SQL_FN_...
SUBSTRING, SUM, SYMMETRIC, SYSTEM, SYSTEM_USER, TABLE, TABLESAMPLE, TABLE_NAME, TEMPORARY, THEN, TIES, TIME, TIMESTAMP, TIMESTAMPADD, TIMESTAMPDIFF, TIMEZONE_HOUR, TIMEZONE_MINUTE, TINYINT, TO, TOP_LEVEL_COUNT, TRAILING, TRANSACTION, TRANSACTIONS_ACTIVE, TRANSACTIONS_COMMITTED, TRANSACTIONS_ROLLE...
(pos INT NOT NULL, value INT NOT NULL) AS BEGIN DECLARE @end AS INT, @start AS INT, @pos AS INT SELECT @arr = @arr + ',', @pos = 1, @start = 1, @end = CHARINDEX(',', @arr, @start) WHILE @end > 1 BEGIN INSERT INTO @t VALUES(@pos, SUBSTRING(@arr, @start, @end...
SUBSTRING CONSTRAINTS JOIN SUM CONTINUE KEY SYSTEM_USER CONVERT LANGUAGE TABLE CORRESPONDING LAST TEMPORARY COUNT LEADING THEN CREATE LEFT TIME CROSS LEVEL TIMESTAMP CURRENT LIKE TIMEZONE_HOUR CURRENT_DATE LOCAL TIMEZONE_MINUTE CURRENT_TIME LOWER ...
If you join this data together along with the sys.exec_sql_text dynamic management function (DMF) through the sql_handle column, you can get the session's currently running query. The snippet in Figure 3 shows how to pull this data together to help determine what is currently happening on...