Summary: in this tutorial, you will learn how to use the PostgreSQL INSERT statement to insert multiple rows into a table. Inserting multiple rows into a table To insert multiple rows into a table using a single
and planning INSERT. Different interfaces provide this facility in different ways; look for “prepared statements” in the interface documentation. Note that loading a large number of rows using COPY is almost always faster than using INSERT, even if PREPARE is used and multiple insertions are batc...
Inserting multiple rows into a PostgreSQL table example def insert_vendor_list(vendor_list): """ insert multiple vendors into the vendors table """ sql = "INSERT INTO vendors(vendor_name) VALUES(%s)" conn = None try: # read database configuration params = config() # connect to the Postg...
*/ if (node->ps.ps_TupFromTlist) { Assert(projInfo); /* can't get here if not projecting */ resultSlot = ExecProject(projInfo, &isDone); if (isDone == ExprMultipleResult) return resultSlot; /* Done with that source tuple... */ node->ps.ps_TupFromTlist = false; } /* * Re...
(3rows) 通用聚合函数 修改表 test=#altertabletbl_testaddcolumnid1intdefault1;ALTERTABLEtest=#select*fromtbl_test; id|name|sex|id1---+---+---+---1|张三|m|12|李四|m|13|王五|f|1(3rows) 统计聚合函数 test=#insertintotbl_testvalues(2,'ww','f');INSERT01test=#select*fromtbl_test...
.20.62 rows=283 width=68) Filter: (arr > '30'::numeric) 2 PARTITION BY RANGE 分区键值连续,可以考虑使用PARTITION BY RANGE。 整形分区键可以引用关键字:最小值MINVALUE、最大值MAXVALUE。 其他类型:无 时间类型CASE: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATE TABLE measurement ( ...
* the same command. E.g. because multiple rows with the same * conflicting key values are inserted. * * This is somewhat similar to the ExecUpdate() * HeapTupleSelfUpdated case. We do not want to proceed because * it would lead to the same row being updated a second time in ...
(5 rows) 从上面可以看出当我们建了相关列上建组合的直方图统计信息后,执行计划中估计的函数与实际一致了。3.5 一些其它功能 hash索引从PostgreSQL 10开始可以放心大胆的使用:PostgreSQL 9.X 版本hash索引走不了流复制,所以基本没有人用hash索引,即如果用了hash索引,在激活备库时,需要重建hash索引。 到PostgreSQL 10...
(v_type,v_cur); loop fetch v_cur into v_user_log ; dbms_output.put_line('TRACE_MARK=='||v_user_log.TRACE_MARK); exit when v_cur%notfound; end loop; --all rows exception when rowtype_mismatch then fetch v_cur into v_user ; dbms_output.put_line(v_user.user_name); end ;...
If you need to insert multiple rows at the same time it's also much faster to do it with a single insert. Simply pass an array of objects to sql().const users = [{ name: 'Murray', age: 68, garbage: 'ignore' }, { name: 'Walter', age: 80 }] await sql`insert into users $...