Pyspark Add Prefix To Column Values

This tutorial describes how to compute and add new variables to a data frame in R. field automatically. We hope this cheat sheet can be of help to you. The values are only from unboundedPreceding until currentRow. To start with, select a blank cell in another column, such as Cell C1. As an example, you might like: def add_prefix(sdf, prefix): for c in sdf. solved How to add prefix to a copied cell using VBA? Would you be so kind to tell me how to add prefix to the copied value in column D in "Missing" sheet? Thank. A check constraint specified as a column constraint should reference that column's value only, while an expression appearing in a table constraint can reference multiple columns. When a key matches the value of the column in a specific row, the respective value will be assigned to the new column for that row. However, things get a little complex when some numbers have area codes and some don't. Thanks for help. Rows are constructed by passing a list of key/value pairs as kwargs to the Row class. scala and Functions. Join (merge) Tables (lists) - by columns match in Excel Join is to combine two tables by matching the values in corresponding columns. Introduction. To add the Prefix (Dr. Full Feature Free. Columns have padding between individual columns, however, the padding can be removed from the grid and columns by adding no-padding on the grid. In the Remove by Position dialog box: (1. Re: Can you add a prefix to all WIndow numbers (Marks) retrospectively ? if you put a prefix in Edit Label from Family Editor , in the schedule it will appear only the number without the prefix, but if you change it in project, either in Type Editor >Identity Data>Type Mark or directly in schedule ( type the name there and the name will change. To start with, select a blank cell in another column, such as Cell C1. How to filter out rows based on missing values in a column? To filter out the rows of pandas dataframe that has missing values in Last_Namecolumn, we will first find the index of the column with non null values with pandas notnull() function. Pandas supports this feature using get_dummies. If you need a single file you convert back to an RDD and use coalesce(1) to get everything down to a single partition so you get one file. Its ColumnMapping can be only set to MappingType. I am going to explain a simple way to crate a auto-increment number column in a custom list without programming. (Also, use the blue "scales" icon in our posts to leave Reputation Feedback , it is appreciated. It can be from an existing SparkContext. lets say i have a column with 3000 different numbers, 1 number in each box in the column, and i want to subtract 1 from each number or add 1 to each number in the column. Set is written as "XXXXXXX" where X is either '_' or a letter and the first X represents 0 (or Sunday for days of the week, or January for months). Select the data range that you want to remove the prefix or suffix. Without them, if there were a column named alphabet, it would also match, and the replacement would be onebet. I have an origianl data to show Quantity and USD by product name and by quarter (in format of YYYYQQ) as below. It's as simple as:. It can be a float number, or formatted string. alter table t4 add column app_id int not null auto_increment = 100 ; but which is not worked. def when (self, condition, value): """ Evaluates a list of conditions and returns one of multiple possible result expressions. I want to add a country code to all of them. They are extracted from open source Python projects. Configure the tool. Apache Spark. 0 when using pivot() is that it automatically generates pivoted column names with "`" character. Similarly to add suffix to a data value in a column insert the formula =A2&"_Dept_1″ in cell C2 as shown below. I am going to explain a simple way to crate a auto-increment number column in a custom list without programming. updating each row of a column/columns in spark dataframe after extracting one or two rows from a group in spark data frame using pyspark / hiveql / sql/ spark Question by vamsi grandhi Feb 15, 2017 at 06:35 PM Hive Spark python pyspark sql. Add dollar sign and two decimal places to an entire column. Most meter stamps of the country are inscribed “ÖSTERREICH”. Rule 1> EmpId cannot be duplicate. transmute(): compute new columns but drop existing variables. Some of the columns are used merely for calculation purpose and that’s why it’s better to hide these columns as they create un-necessary confusions. I am trying to return the first name, last name, street_add, city, and state in one sql statement. Firebird Alter Table Add Column. It’s easy to fill all cells with same content in a column with the AutoFill feature. You can vote up the examples you like or vote down the ones you don't like. List, Seq, and Map. Click Edit to select a path to a file or database table. Reply | Quote Answers. Adding a Prefix to an entire Column in Excel? I need to add the word Homeroom to a column of about 95 cells. Values are expected to be encoded appropriately with urlencode() or rawurlencode(). Python Spark Shell can be started through command line. SET, ENUM ✗ MySQL, PostgreSQL Extension Only allow rows to contain values from a defined set of terms. Hi Alvin Ramard it is actually nvarchar column data type only my problem is consider statement 1 has N'record it works but when i am going to insert without N'record it did nt work so can i have anything in database level to fix we can insert without put N' prefix on record. For each worksheet, it loops through the UsedRange. Click Kutools > Text > Remove by Position, see screenshot: 3. Add this suggestion to a batch that can be applied as a single commit. Let's see some basic example of RDD in pyspark. You can easily add a new custom column of data to your model using Query Editor in Power BI Desktop. conf file, optionally, you can add the above lines to the Spark Interpreter setting through the Interpreter tab in the Zeppelin UI. I have created a thread for you @ Add Double Quote Before And After Cell Value. I want add text and a slash into a cell on Google sheets that contains two groups of numbers. How do I add additional strings or characters to cell contents? Use the CONCATENATE function to add strings or characters to cell contents: Go to an empty cell Enter =CONCATENATE("prefix";A1;"suffix") as the cell contents "prefix" being any text you would like to add in front of the existing cell contents A1 being the original cell. This causes problem when you filter, match table, join (merge), or find duplicates. Now that we have installed and configured PySpark on our system, we can program in Python on Apache Spark. We replaced NULL values in the shippedDate column by the N/A strings. RDD stands for Resilient Distributed Dataset, these are the elements that run and operate on multiple nodes to. A bit of annoyance in Spark 2. For example, we have the following tasks: Load DataFrame. I need to order by id and check for 4 consecutive 1's in seq_checker column. Hello, I have two tables that have a couple of columns with the same name. For example, adding a column with default value is a backward compatible change. Select the cell or column that contains the text you want to split. t_page_item,. You will learn the following R functions from the dplyr R package: mutate(): compute and add new variables into a data table. In the original date table, add a new column referencing the concatenated month column of the pasted prefix table using DAX [formula: =RELATED(Prefix[Month])] This new DAX column can now be added to your Slicers representing Month, which will sorted in calendar order ; Hiding the prefix table. This will let you enter zero on first position. The reason I tell you not to add tbl to the front of your table names is the same reason I'd say not to add child to the front of your child's name. Another option here is to use pyspark. For usage: partition_helper --help - partition_helper. column names, default is ``None``. With the range selected, go to the Data tab > Data Tools group, and click the Remove Duplicates button. PySpark - SQL Basics Learn Python for data science Interactively at www. version >= '3': basestring = unicode = str long = int from functools import reduce else: from itertools import imap as map import warnings from pyspark import copy_func, since, _NoValue from pyspark. How do I prefix a text to an Excel column? - all numbers are in rows. In Excel, how do you add a character to a cell for an entire column? I have a column of 5 digit numbers and I need to add the character # in front of all of them. However the output looks little uncomfortable to read or view. In other words, we can say it is the most common structure that holds data in Spark. This causes problem when you filter, match table, join (merge), or find duplicates. It's also possible to do the same with COUNTIF instead of SUBTOTAL, i. from pyspark. The fourth example shows how to change the name of a column using the column number to identify which column to apply the name to. Column functions return a set of columns as a new table. how to merge two columns value into single column in sql select statement? SQL Server > SQL Server Express. You could see this time we have added the string at the last and have joined them with the help of concatenation operator & in excel. How to transpose a pyspark dataframe? I want 'one' and 'two' to be column header and all list values should be column values. SQL Server Express https:. Seeding and reseeding an identity column is easy and relatively safe, if you do it correctly. Add this suggestion to a batch that can be applied as a single commit. Importing Large Files In To Excel. data, …) Extract columns by name. Use with --separator to align the output columns. Hello, I need to add an apostrophe to each cell in a long column of numbers. This page serves as a cheat sheet for PySpark. Yes, true, I missed the last part it seems. add_suffix (self, suffix) Suffix labels with string suffix. Method 2: Add or pad the leading zeros to numbers to equal certain length with Format Cells function. I tried using window functions. Now that we have installed and configured PySpark on our system, we can program in Python on Apache Spark. For more information, see Merge columns. Copy rows if column contains specific text/value of another column. withColumn ("category", udfValueToCategory ("c1")). Select the data range that you want to remove the prefix or suffix. Add specific text to the beginning/end of all cells in Excel Remove Last Two Words From Column Of Data - Duration:. ', 'initcap': 'Returns a new string column by converting. TemplateField bfield = new TemplateField(); //Initalize the DataField value. In other words, we can say it is the most common structure that holds data in Spark. In order to explain this better, let us assume that you have an Excel spreadsheet containing names of doctors in Column A and the task is to add the Prefix "Dr. In the original date table, add a new column referencing the concatenated month column of the pasted prefix table using DAX [formula: =RELATED(Prefix[Month])] This new DAX column can now be added to your Slicers representing Month, which will sorted in calendar order ; Hiding the prefix table. Add Prefix Or Suffix To All Cells. Hey all, I'm trying to calculate the difference in time between values in the same column of data, but consecutive rows. Adding Files. Re: Add Single Character Before & After Each Cell Value In Column Hi Anbar, Please do not resurrect [SOLVED] threads if you are not able to get a resolution to your specific queries. The Google Analytics Spreadsheet add-on makes it easier for Google Analytics users to access, visualize, share, and manipulate their data in Google Spreadsheets. Hello, I need to add an apostrophe to each cell in a long column of numbers. Index prefixes of string values. There are many different ways of adding and removing columns from a data frame. I would leave the original alone and add a formula to an adjacent column. ', 'base64': 'Computes the BASE64 encoding of a binary column and returns it as a string column. In this task, you add the Derive Column Transform to the data flow. 4 release, DataFrames in Apache Spark provides improved support for statistical and mathematical functions, including random data generation, summary and descriptive statistics, sample covariance and correlation, cross tabulation, frequent items, and mathematical functions. Performance-wise, built-in functions (pyspark. I tried in the following way but could have a luck because of lack of experiences. By default, Excel 2010 omits zero if it is present in the first position of cell values. IN or NOT IN conditions are used in FILTER/WHERE or even in JOINS when we have to specify multiple possible values for any column. The type of the column must be an integral type and the existing values must not include nulls. Set is written as "XXXXXXX" where X is either '_' or a letter and the first X represents 0 (or Sunday for days of the week, or January for months). Select the columns to be included in the view, then choose Finish. functions import udf from pyspark. %loop-value. add_suffix¶ DataFrame. The Time column field refers to the name of the column holding your time values. Two additional resources are worth noting regarding these new features, the official Databricks blog article on Window operations and Christophe Bourguignat ‘s article evaluating Pandas and Spark DataFrame differences. I want to add prefix "1" to each value of this sample data. That way Excel does not try to guess if it is a number or not and will keep the leading zeros. Right now I have cells with contents like add file extensions to a column - ExcelBanter. This is a consistency check which ensures that each value in this column corresponds to another value in a column in another table. How is the right formula for adding 'at once' to the entire column of thousands of lines. Data Engineers Will Hate You - One Weird Trick to Fix Your Pyspark Schemas May 22 nd , 2016 9:39 pm I will share with you a snippet that took out a lot of misery from my dealing with pyspark dataframes. Working in Pyspark: Basics of Working with Data and RDDs This entry was posted in Python Spark on April 23, 2016 by Will Summary : Spark (and Pyspark) use map, mapValues, reduce, reduceByKey, aggregateByKey, and join to transform, aggregate, and connect datasets. If value is string representation of number (unformatted), isNumericString props should be passed as true. This page serves as a cheat sheet for PySpark. I want to add prefix "1" to each value of this sample data. You can define whether a recordset type in the document is displayed as text with a fixed field width, or in a separate list with a user-defined separator. The content of the new column is derived from the values of the existing column ; The new column is going to have just a static value (i. I know how to unpivot multiple columns into two columns if the columns are the same type, either quantity or US dollar. case (dict): case statements. Generic "reduceBy" or "groupBy + aggregate" functionality with Spark DataFrame adding missing columns with 'null' entry where appropriate. A grid creation boilerplate for SASS. Registers/Adds configuration labels for a given column (by index). This option is specific to HyperSQL. [SPARK-10073] [SQL] Python withColumn should replace the old column DataFrame. The heading for the leftmost item is on top. The column cannot be part of a RowFilter or Select expression. PySpark: How do I change the value of a row+column based on the value of other row values. You can add new variables by adding a row to the result, remove existing variables by deleting rows from the result, or edit the value of a variable. In those cases, it often helps to have a look instead at the scaladoc, because having type signatures often helps to understand what is going on. Columns) { //Declare the bound field and allocate memory for the bound field. withColumn ("category", udfValueToCategory ("c1")). As Mike had suggested earlier , we don't see a requirement here to use an array. add_prefix (self, prefix) Prefix labels with string prefix. foreach (DataColumn col in dt. Adding a prefix to all values in a col in a data. linalg module¶ MLlib utilities for linear algebra. If I have a function that can use values from a row in the dataframe as input, then I can map it to the entire dataframe. Identity column is every increasing (or decreasing) value based on the interval specified in its property. I can write a function something like. add_suffix (self, suffix) Suffix labels with string suffix. If you're going to do it through a web form, you could use javascript to add the values together to create the URL and then redirect the user to that URL. sparse column vectors if SciPy is available in their environment. by having the ability to change all the values to having a prefix, I can add them into my inventory for multiple companies and never have a duplicate item number so if I have 5 companies that have an item 1234, every time I load a list into my inventory the new 1234 doesn't just run over the old one. Its primary purpose is to provide an interface with the WordPress database, but can be used to communicate with any other appropriate database. Create a dataframe from the contents of the csv file. Rename Multiple pandas Dataframe Column Names. Your DAX formula will use the logical IF function to test each store's Status and return a particular value depending on the result. Rule 1> EmpId cannot be duplicate. Let us say we want to add a new column ‘pop’ in the pandas data frame with values from the dictionary. Join (merge) Tables (lists) - by columns match in Excel Join is to combine two tables by matching the values in corresponding columns. Values <'column-width'> The ideal column width, defined as a or the keyword auto. How do I prefix a text to an Excel column? - all numbers are in rows. I am moving data from staging to the destination and there are two columns called Col 1 and Col2. defaultValue: Number or String: null: Value to the used as default value if value is not provided. > Add a Character to every cell in Microsoft Excel 2010 Add a Character to every cell in Microsoft Excel 2010 Sometimes we need to add a " Prefix" & "Suffix" to existing data to clearly indicate what the data pertains to and make it more understandable to the reader. value – int, long, float, string, or dict. " or "EAN" to indicate it is an EAN number. A SparkSession can be used to create DataFrame, register DataFrame as tables, execute SQL over tables, cache tables, and read parquet files. However, things get a little complex when some numbers have area codes and some don't. Hi, I want to add prefix and suffix on line# 205 using SED or AWK and want to change on the same file without creating new file. Thanks for help. Source code for pyspark. How do I add additional strings or characters to cell contents? Use the CONCATENATE function to add strings or characters to cell contents: Go to an empty cell Enter =CONCATENATE("prefix";A1;"suffix") as the cell contents "prefix" being any text you would like to add in front of the existing cell contents A1 being the original cell. If you are reading from a secure S3 bucket be sure to set the following in your spark-defaults. Add this suggestion to a batch that can be applied as a single commit. · Add your reply. Pandas’ map function is here to add a new column in pandas dataframe using the keys:values from the dictionary. So we have to convert existing Dataframe into RDD. add_suffix (self, suffix) Suffix labels with string suffix. For each Transformer we are defining the input column and the output column that will contain the modified value. Apache Spark. then it tries to insert the same 2 commandLinks inside a dataTable. Luckily, MySQL provides another kind of index called UNIQUE index that allows you to enforce the uniqueness of values in one or more columns. They are extracted from open source Python projects. rdd import RDD. It is opposite for "NOT IN" where the value must not be among any one present inside NOT IN clause. By setting the value to none the default appearance can be entirely redefined using other CSS properties. Create a new thread. Adding a Prefix It’s helpful to add one of the standardized naming prefixes to your devices, such as R for a resistor, or C for a capacitor, and you’ll see these all over schematics and PCB layouts from other engineers. Note: You can use custom column to merge values from two or more columns into a single custom column. Most of the times, we may want a delimiter to distinguish between first and second string. For the purpose of my process I need to ensure that he output through Power BI is always 5 digits in lenght. Create a dataframe from the contents of the csv file. How to add prefix and suffix quickly in Excel? I copy an SRT file in A column Excel, and want to add a prefix and suffix to the line 3 or 4 only. COLUMN Statement. This post will guide you how to add common prefix or suffix to all cells or the range of cells in your worksheet in Excel. SAS Macro to add a prefix to some or all variables in a data set… Posted on June 30, 2012 by Sharad in Macros , SAS Often we need to add a prefix to some or all variables in a dataset before we might have to merge datasets that have similar column attributes…This macro would allow you to do that…. add a comment | which have different lengths on the same column values which exist in both tables?. More discussions in Business Intelligence Suite Enterprise Edition (OBIEE). The benefit of this is that if you add a new ‘setting’ to the first layout, you only need to update the clone field in your second layout. I do not want to enter a formula individually for all 688 cells! How can I add. l_select VARCHAR2 (32767);. add (self, other[, axis, level, fill_value]) Get Addition of dataframe and other, element-wise (binary operator add). I want to add prefix "1" to each value of this sample data. To hide the table you simply hide all the. I have a dataset with about 100 variables all starting with the same prefix (and ending in different numbers, like prefix1, prefix3, prefix7prefix170, etc. Function slip_in_column_break() can be used to add a column break. For the purpose of my process I need to ensure that he output through Power BI is always 5 digits in lenght. The AWS Glue crawler missed the string values because it considered only a 2 MB prefix of the data. :class:`pyspark. How to filter out rows based on missing values in a column? To filter out the rows of pandas dataframe that has missing values in Last_Namecolumn, we will first find the index of the column with non null values with pandas notnull() function. Then, in the selected cell, type the formula in the pattern of = “Prefix ” & Cell, such as the following instance. Once the cluster is in the WAITING state, add the python script as a step. The Define Objects panel displays. This includes adding a prefix, enabling values, and adding description text. Now I want to select all of the columns from both tables and add a prefix to each column so I could know which column is. Calculated columns allow you to combine two or more columns into a new third column. Setup a private space for you and your coworkers to ask questions and share information. Add specific text to the beginning/end of all cells in Excel Remove Last Two Words From Column Of Data - Duration:. If you want to change it change line 8. Append column to Data Frame (or RDD). The datasets are stored in pyspark RDD which I want to be converted into the DataFrame. 03 to each cell. To simply add serial numbers using fill handle you can use following steps. Santhosh Kumar Jayaraman. Once the creation of the dynamic column and assigning values to the column is complete. Each number is in 1 row, and there are about a. Hi Alvin Ramard it is actually nvarchar column data type only my problem is consider statement 1 has N'record it works but when i am going to insert without N'record it did nt work so can i have anything in database level to fix we can insert without put N' prefix on record. In Excel, the Format Cells feature also can help you pad the leading zeros to cell values to make them as same length, please do as this:. For example if the column is 2030 the final result should be "BDM-2030". alter table t4 add column app_id int not null auto_increment = 100 ; but which is not worked. value=value + 22220000000000; I think I got the right number of zeroes there - adjust as per your testing ) Alternatively if they are not all 10, then its probably simpler to convert to text, append then convert back to number:. Source code for pyspark. Hence used lambda function. Applying suggestions on deleted lines is not supported. For more information, see Merge columns. class pyspark. Example original data is 021808109 12345678 contained in one cell, I want to add text of CA/ to the beginning and a slash between the two numbers. Another option here is to use pyspark. In my scenario, I knew that I wanted to use the site column called Internal Writer. add objects in column "Arme" from result of query "SELECT Arme FROM {@table_prefix}_Player WHERE 1" to {{@table_prefix}. The rbind() function in R conveniently adds the names of the vectors to the rows of the matrix. The table is persisted immediately after the column is generated, to ensure that the column is. Let say, we have the following DataFrame and we shall now calculate the difference of values between consecutive rows. The datasets are stored in pyspark RDD which I want to be converted into the DataFrame. Index prefixes of string values. I am going to explain a simple way to crate a auto-increment number column in a custom list without programming. I need to add. Select the Source Table/Query. Adding a Prefix It’s helpful to add one of the standardized naming prefixes to your devices, such as R for a resistor, or C for a capacitor, and you’ll see these all over schematics and PCB layouts from other engineers. SAP Business One populates the Next No. It’s easy to fill all cells with same content in a column with the AutoFill feature. functions import concat, col, lit df // Define a udf to concatenate two passed in string values val getConcatenated Can we add column to. Adding StrictXml2PlainBean (XML to Text) in the Module Processor Use. withColumnRenamed(c, '{}{}'. linalg module¶ MLlib utilities for linear algebra. Registers/Adds configuration labels for a given column (by index). Now go back to the report design and re-create the table from scratch. /** * Microsoft Edge and IE mobile support this property width the -webkit- * prefix rather than -ms- for interop reasons. In order to explain this better, let us assume that you have an Excel spreadsheet containing names of doctors in Column A and the task is to add the Prefix "Dr. get the month from a date column with the calculated column. Not only does it not add any value, they may not be a child later in life - and your objects may later become views. If you want to change the prefix obviously you can remove RNE and input any prefix string. Column A1: 1 11 23 99 Add to column A2 +"A"&A1 then copy down to the end of the numbers in Column A If you want to make it permant then copy the Column B do a paste special and just pick values. Here's how to install, manage, and choose the best Add-Ins available. So, for each row, I need to change the text in that column to a number by comparing the text with the dictionary and substitute the corresponding number. As a generic example, say I want to return a new column called "code" that returns a code based on the value of "Amt". get_worksheets( p_xlsx_name => :PX_XLSX_FILE ) ) Set Display Extra Values to No, Display Null Value to Yes and use - Choose - as the Null Display Value. Select the Source Table/Query. com " and in Text2 column to which you want to enter the prefix here it is "A2". This option is specific to HyperSQL. Adding ArrayType columns to Spark DataFrames with concat_ws and split SQL functions can be used to add ArrayType columns to of array to append an ArrayType column without any null values. 0 when using pivot() is that it automatically generates pivoted column names with “`” character. transmute(): compute new columns but drop existing variables. 1) and would like to add a new column. I may need to prefix all nominal ledger codes with a department reference, say, or maybe add "/1" to all existing codes in a list, so that we can add new variations later of /2, /3, etc. Prefix: BaseRange. Index prefixes of string values. You can vote up the examples you like or vote down the ones you don't like. The column of interest can be specified either by name or by index. Create a new thread. Also we have to add newly generated number to existing row list. Can I add a prefix to data in a column? I need to prefix '0' onto all the values in a column. This discussion is archived. It is used to control the folder structure and file name when saving files from the calibre library to the disk or e-book reader. - I would to split these values to columns but each. Hey all, I'm trying to calculate the difference in time between values in the same column of data, but consecutive rows. _string_functions = {'ascii': 'Computes the numeric value of the first character of the string column. Each number is in 1 row, and there are about a. Step 11: Assemble the columns into a feature vector. Count in R using the apply function Imagine you counted the birds in your backyard on three different days and stored the counts in a matrix […]. ' in front of all of the values when this field is placed in a sheet. Example: Modifying data in a table, using UPDATE OR INSERT in a PSQL module. Hold down the Alt + F11 keys in Excel, and it opens the Microsoft Visual Basic for Applications window. How to set default column values on a document in SharePoint. Create powerful multi-device layouts quickly and easily with the default 12-column, nestable Foundation grid. Also we have to add newly generated number to existing row list. We have a table named DETAIL_RECORD having c column 'REF_DGNFILE' with about 3400 records. The tutorial explains how to use the IF function in Excel. Null field value separator. For example, if the number is 123456, I want it to become 88123456. 1) and would like to add a new column. DataFrameWriter that handles dataframe I/O. <'column-count'>. 8/1/2019; 2 minutes to read; In this article Syntax Table. If a Range value is different from trimmed value, the Cell address and worksheet names are identified in a new worksheet called “contain space”. For more information, see Merge columns. The following types of extraction are supported: - Given an Array, an integer ordinal can be used to retrieve a single value. ix[(df['col. I tried in the following way but could have a luck because of lack of experiences. By default, Excel 2010 omits zero if it is present in the first position of cell values. How to update column value by adding “1” based on a condition? Ask Question Asked 1 year, 7 months ago. Adding suffix to a column value for duplicate names in SQL In this blog, let us see how to add suffix for a field value if the value already exists in the table. value=value + 22220000000000; I think I got the right number of zeroes there - adjust as per your testing ) Alternatively if they are not all 10, then its probably simpler to convert to text, append then convert back to number:. A generic solver for tile laying problems using Knuth's dancing link algorithm. This works fine and columns are added when setting the DataSource. REPLACE COLUMNS removes all existing columns and adds the new set of columns. The reason max isn't working for your dataframe is because it is trying to find the max for that column for every row in you dataframe and not just the max in the array. Needed three column values from a row in a table into three different variables.