merge

Left join only selected columns in R with the merge() function

由 ℡╲_俬逩灬. 提交于 2020-01-19 19:20:49
问题 I am trying to LEFT Join 2 data frames but I do not want join all the variables from the second data set: As an example, I have dataset 1 (DF1): Cl Q Sales Date A 2 30 01/01/2014 A 3 24 02/01/2014 A 1 10 03/01/2014 B 4 10 01/01/2014 B 1 20 02/01/2014 B 3 30 03/01/2014 And I would like to left join dataset 2 (DF2): Client LO CON A 12 CA B 11 US C 12 UK D 10 CA E 15 AUS F 91 DD I am able to left join with the following code: merge(x = DF1, y = DF2, by = "Client", all.x=TRUE) : Client Q Sales

Left join only selected columns in R with the merge() function

由 会有一股神秘感。 提交于 2020-01-19 19:16:30
问题 I am trying to LEFT Join 2 data frames but I do not want join all the variables from the second data set: As an example, I have dataset 1 (DF1): Cl Q Sales Date A 2 30 01/01/2014 A 3 24 02/01/2014 A 1 10 03/01/2014 B 4 10 01/01/2014 B 1 20 02/01/2014 B 3 30 03/01/2014 And I would like to left join dataset 2 (DF2): Client LO CON A 12 CA B 11 US C 12 UK D 10 CA E 15 AUS F 91 DD I am able to left join with the following code: merge(x = DF1, y = DF2, by = "Client", all.x=TRUE) : Client Q Sales

merge update oracle unable to get a stable set of rows

由 走远了吗. 提交于 2020-01-19 01:50:18
问题 I am trying to update a table in Oracle based on another table (inner join) but the matching fields match on more than 1 row so I get an error: unable to get a stable set of rows MERGE INTO C USING D ON (C.SYSTEM = D.SYSTEM) WHEN MATCHED THEN UPDATE SET C.REF_CD = D.CODE, C.REF_DT = TO_DATE('12/05/2017', 'MM/DD/YYYY') WHERE C.CODE = '123' AND D.CODE IS NOT NULL AND C.CLOSED = 'N' AND C.RCVD_DT >= TO_DATE('12/01/2017', 'MM/DD/YYYY') AND C.RCVD_DT <= TO_DATE('12/04/2017', 'MM/DD/YYYY') AND

Merge Two List in a way to cover full hours

由 橙三吉。 提交于 2020-01-17 17:33:09
问题 I have two lists Schedule(Having Total Hours) And Registered (Having Time Intervals). I want to create a list that is having registered time covered with Schedule list total hours finished. See the Upper image. The resultant list is covering Registered Times and ENd if it doesn't find any registration for left hours. It will just create further times according to hours left with their types. 回答1: Take a look at this sample: class Task { public int duration; public string type; public int

Merge Two List in a way to cover full hours

由 梦想与她 提交于 2020-01-17 17:33:08
问题 I have two lists Schedule(Having Total Hours) And Registered (Having Time Intervals). I want to create a list that is having registered time covered with Schedule list total hours finished. See the Upper image. The resultant list is covering Registered Times and ENd if it doesn't find any registration for left hours. It will just create further times according to hours left with their types. 回答1: Take a look at this sample: class Task { public int duration; public string type; public int

Pandas merge and grouby

由 ￣綄美尐妖づ 提交于 2020-01-17 16:41:03
问题 I have 2 pandas dataframes which looks like below. Data Frame 1: Section Chainage Frame R125R002 10.133 1 R125R002 10.138 2 R125R002 10.143 3 R125R002 10.148 4 R125R002 10.153 5 Data Frame 2: Section Chainage 1 2 3 4 5 6 7 8 R125R002 10.133 0 0 1 0 0 0 0 0 R125R002 10.134 0 0 1 0 0 0 0 0 R125R002 10.135 0 0 1 0 0 0 0 0 R125R002 10.136 0 0 1 0 0 0 0 0 R125R002 10.137 0 0 1 0 0 0 0 0 R125R002 10.138 0 0 1 0 0 0 0 0 R125R002 10.139 0 0 1 0 0 0 0 0 R125R002 10.14 0 0 1 0 0 0 0 0 R125R002 10.141 0

Pandas merge and grouby

由 梦想的初衷 提交于 2020-01-17 16:40:08
问题 I have 2 pandas dataframes which looks like below. Data Frame 1: Section Chainage Frame R125R002 10.133 1 R125R002 10.138 2 R125R002 10.143 3 R125R002 10.148 4 R125R002 10.153 5 Data Frame 2: Section Chainage 1 2 3 4 5 6 7 8 R125R002 10.133 0 0 1 0 0 0 0 0 R125R002 10.134 0 0 1 0 0 0 0 0 R125R002 10.135 0 0 1 0 0 0 0 0 R125R002 10.136 0 0 1 0 0 0 0 0 R125R002 10.137 0 0 1 0 0 0 0 0 R125R002 10.138 0 0 1 0 0 0 0 0 R125R002 10.139 0 0 1 0 0 0 0 0 R125R002 10.14 0 0 1 0 0 0 0 0 R125R002 10.141 0

C#实现的Table的Merge，以及实现Table的Copy和Clone

由 ≯℡__Kan透↙ 提交于 2020-01-17 12:55:38
C#实现的对两个Table进行Merge，两表必须存在至少一个公共栏位作为连接项，否则连接就失去了意义。如下是对两个table进行Merge的详细代码： private void button1_Click(object sender, EventArgs e)//Button点击触发事件 { #region Table的Merge DataTable dt = new DataTable(); DataTable dt1 = new DataTable();//创建Table1 dt1.Columns.Add("ID", typeof(string)); dt1.Columns.Add("NAME",typeof(string)); dt1.Columns.Add("AGE", typeof(int)); dt1.Columns.Add("SEX", typeof(string)); dt1.PrimaryKey = new DataColumn[] { dt1.Columns["ID"]}; for (int i = 0; i < 5; i++) { DataRow dr = dt1.NewRow(); dr["ID"] = "00" + i.ToString(); dr["NAME"] = "00-" + i.ToString(); dr["AGE"] = 15 + i;

Macro to merge and concatenate cells in Excel for rows in which information on other columns matches

由 心不动则不痛 提交于 2020-01-17 11:14:12
问题 apologize if this is a common post, but couldn't find something that fully applies to me. It's a very similar post to (except that instead of just merging the 2 cells, i am looking to merge and concatenate): Macro to merge cells in Excel for rows in which information in other columns matches Referencing the image in the post above, what i am looking for are cells P2 and P3 to be merged and the data to be concatenated. For eg: if P2 had abc, and P3 had xyz, i am looking for end product to be

rbind data.frames with same number of columns but different number of rows in a for loop, exactly one bellow another (vertically)

由 点点圈 提交于 2020-01-17 09:05:57
问题 I have read a lot of data.frame rbind related questions, but none of them helped my situation. I have made a script to recursively scan folders, extract pixel values from each image in the folder based on the shapefiles, with the help of a for loop. In the picture attached you can see the data.frame which is a result of this extraction from one folder. pixel extraction dataframe All the other folders have the same number of images which are very similarly named, so the number of columns in
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