SQL String Functions > Substring The Substring function in SQL is used to return a portion of the string. Each database provides its own way(s) of doing this: MySQL: SUBSTR( ), SUBSTRING( ) Oracle: SUBSTR( ) SQL Server: SUBSTRING( ) ...
getText(); } public List<String> getTableNames() { return tableNames; } } 测试一下上述逻辑,测试代码如下: public class TableNameExtractorTest { @Test public void testExtractTableName() { String sqlText = "SELECT A,B FROM T1 WHERE C='pioneeryi'"; TableNameExtractor extractor = new Table...
SQL_SNVF_EXTRACTSQL_SNVF_OCTET_LENGTHSQL_SNVF_POSITION SQL_SQL92_PREDICATES 3.0 一个SQLUINTEGER 位掩码,用于枚举 SELECT 语句中支持的谓词,如 SQL-92 中定义。必须支持此功能的 SQL-92 或 FIPS 一致性级别显示在每个位掩码旁边的括号中。以下位掩码用于确定数据源支持的选项:SQL_SP_BETWEEN (入门级别)SQL...
AI检测代码解析 importorg.apache.hadoop.hive.ql.exec.UDF;importorg.apache.hadoop.io.Text;publicclassExtractContentUDFextendsUDF{publicTextevaluate(Textinput){if(input==null){returnnull;}Stringcontent=input.toString();intstart=content.indexOf("(");intend=content.indexOf(")");if(start>=0&&end>=0...
*MessageText 緩衝區中 SQLGetDiagRec 傳回的錯誤訊息描述錯誤及其原因。 HY001 記憶體配置錯誤 驅動程式無法配置支援執行或完成函式所需的記憶體。 HY010 函式順序錯誤 (DM) 已針對 StatementHandle 呼叫SQLExecute、SQLExecDirect 或SQLMoreResults,並傳回SQL_PARAM_DATA_AVAILABLE。 在擷取所有數據流參數的數據之前,...
WRITETEXT 此外,ISO 标准定义了保留关键字列表。不要使用 ISO 保留关键字作为对象名和标识符。ODBC 保留关键字列表(如下表所示)与 ISO 保留关键字列表相同。 注意 ISO 标准保留关键字有时可能比 SQL Server 限制更多,有时则更少。例如,ISO 保留关键字列表包含 INT。SQL Server 不必将此区分为保留关键字。
usingSystem;usingSystem.Data.SqlTypes;usingSystem.Text.RegularExpressions;usingMicrosoft.SqlServer.Server;publicclassRegexString{[SqlFunction]publicstaticSqlStringExtractNumbers(SqlStringinput){if(input.IsNull)returnSqlString.Null;Regexregex=newRegex(@"\d+");MatchCollectionmatches=regex.Matches(input.Value);s...
(partition by st order by st) -1 as rn -- 构造排序字段辅助计算 from (-- 构造起始差长度+1的重复序列 select st ,en ,regexp_extract(repeat(concat(st,','),int(abs(en-st)+1)),'(.*),',1) as number_repeat_list from temp )a lateral view explode(split(number_repeat_list,','))...
Extract a substring from a varchar(x) variable formated as XML? extract date from text string - Transact-SQL Extract directory path from the file path with file name Extract Image data (storing xml file) from sql server table, shred xml file and load to table Extract integer portion? Extrac...
* When we need to extract everything between two tokens including all spaces we should use * this method instead of defined a named Antlr4 rule for .*?, * which somehow parse "a b" -> "ab" in some cases */ def interval(start: Token, end: Token): String = { val interval = ...