parse("SELECT username,age,sex FROM user"); SelectBody selectBody = select.getSelectBody(); System.err.println(selectBody); } 源码结构 expression:SQL构建相关类,比如EqualsTo、InExpression等表达式用于构建SQL。 parser: SQL解析相关类,比如CCJSqlParserUtil。 schema:主要存放数据库schema相关的类 ,比如...
DATA_LENGTH||')') ||' '|| decode(t.nullable, 'N','NOT NULL', 'n','NOT NULL', NULL) col from dba_ind_columns i, dba_tab_columns t where i.table_name = upper('&Table_name') and owner = upper(nvl('&Owner',user)) and i.table_name = t.table_name and i.column_name =...
此範例使用 VARIABLE_COLUMN_LOG_PARSE 函數來操作 Kinesis Data Analytics 中的字串。VARIABLE_COLUMN_LOG_PARSE 將輸入字串分割,變成以分隔符號字元或字串分開的欄位。如需詳細資訊,請參閱 Amazon Managed Service for Apache Flink SQL 參考資料中的VARIABLE_COLUMN_LOG_PARSE。 在此範例中,將...
/*** Parses either a row expression or a query expression with an optional* ORDER BY.** Postgres syntax for limit:** <blockquote>* [ LIMIT { count | ALL } ]* [ OFFSET start ]* </blockquote>** Trino syntax for limit:** <blockquote>* [ OFFSET start ]* [ LIMIT { count | AL...
Analyze主要是对Parse阶段生成的抽象语法树AST进行一些前期的处理和语义分析,为生成单机逻辑计划做准备。 抽象语法树是由StatementBase这个抽象类表示。这个抽象类包含一个最重要的成员函数analyze(),用来执行Analyze阶段要做的事。 不同类型的查询select, insert, show, set, alter table, create table等经过Parse阶段...
parse(); if (ret == 0) { // 解析出所有语句 TStatementList stmts = sqlparser.getSqlstatements(); // 拿到create table语句的实例 TCreateTableSqlStatement stmt = (TCreateTableSqlStatement) stmts.get(0); // 从create table语句的子查询中,拿到select语句的实例,再获取column TSelectSqlStatement ...
( SELECT pkg,cate1_gp AS cate FROM con_tabl3 ) ) b ON a.pkg=b.pkg ) GROUP BY gazj )";// 待解析 SQL// 新建 Parser// 解析 SQL 语句List<SQLStatement> stmtList = SQLUtils.parseStatements(selectSql,"hive");// 遍历解析结果,根据不同的语句类型做相应的处理for(SQLStatement stmt : ...
FAILED: ODPS-0130161:[1,19] Parse exception - unexpected escape sequence: 01 ODPS-0130161:[1,38] Parse exception - unexpected escape sequence: 0001 正确改法 select split(key, "\001"), value like "\001" from t; column.repeated.in.creation 说明:如果创建表时列名重复,MaxCompute 2.0将会报错...
parseStatements(sql); return statements; } catch (JSQLParserException e) { log.error("SQL 解析失败: {}", sql, e); throw new CloudPluginException(ResultCodingEnum.SchedulingError, "SQL 解析失败"); } } private Statement doHandle(Statement statement, String table, String column, String value)...
database driver dependent. Check your database driver documentation for which of the five syntax styles, described in PEP 249’s paramstyle, is supported. Eg. for psycopg2, uses %(name)s so use params={‘name’ : ‘value’}parse_dates : list or dict, default: NoneList of column names ...