The overall execution cycle consists of a parse step, which creates a prepared statement from a textual query string; a bind step, which creates a portal given a prepared statement and values for any needed parameters; and an execute step that runs a portal's query. In the case of a quer...
EXECUTE command-string; 这里的 command-string 是一个生成字串(类型为 text)的表达式,该字串包含要执行的命令。 该字串的文本将被传递给 SQL 引擎。 请特别注意在该命令字串里将不会发生任何 PL/pgSQL 变量代换。 变量的数值必需在构造命令字串的时候插入该字串。 和所有其它在PL/pgSQL里的命令不同, 一个...
string cmdText, SqlParameter[] cmdParms) { if (conn.State != ConnectionState.Open)...
传给Service层去使用MyBatis-Plus的xml中查询数据库，结果，在数据库的xml中并没有接收到Service层传过...
/* And now back to C string */ c_sql=text_to_cstring(DatumGetTextPP(t_sql)); execute_sql_string(c_sql); } PG_CATCH(); { creating_extension=false; CurrentExtensionObject=InvalidOid; PG_RE_THROW(); } PG_END_TRY(); creating_extension=false; ...
EXECUTE plan_name [ (parameter [, ...] ) ]EXPLAIN显示一个语句的执行规划。EXPLAIN [ ANALYZE ] [ VERBOSE ] statementFETCH用游标从查询中抓取行。FETCH [ direction { FROM | IN } ] cursor_namedirection 可以是以下选项之一:NEXT PRIOR FIRST LAST ABSOLUTE count RELATIVE count count ALL FORWARD ...
execute(): Return true if the first object of the query is a ResultSet object. You can get the ResultSet by calling the method getResultSet(). executeQuery(): Return only one ResultSet object. executeUpdate(): Return the number of rows affected by the statement. Typically, you use this...
appendStringLiteralConn(query, lockWaitTimeout, GetConnection(fout)); ExecuteSqlStatement(fout, query->data); } 例如: SESSION A : pg93@db-172-16-3-33-> psql psql (9.3devel) Type "help" for help. digoal=# begin; BEGIN digoal=# truncate table test; ...
EXECUTE PROCEDURE strig();ANALYZE exp;INSERT INTO exp VALUES (1,1), (2,3),(4,5),(6,7),(8,9);DELETE FROM exp;INSERT INTO exp VALUES (1,1);ALTER TABLE exp SET (autovacuum_vacuum_threshold= 1);ALTER TABLE exp SET (autovacuum_analyze_threshold= 1);这里 Vacuum exp调用sfunc ( )将...
ExecuteStatement 执行SQL语句 执行SQL语句。 DescribeTable 查看表详情 查看表详情。 ListTables 查看数据表列表 查看数据表列表。 ListSchemas 查看Schema列表 查看Schema列表。 ListDatabases 查看数据库列表 查看数据库列表。 Secret API标题API概述 ListSecrets 查看访问凭证列表 查看访问凭证列表。 GetSecretValue 获取凭...