![]() ![]() I create a flattened pivot table with that last and final column. Once the data is in the PowerPivot window, I add successive columns with concatenate statements to 'build' the insert statement. Seems like overkill, except when you need to do it over and over again. ![]() I have used Excel/PowerPivot to create the postgreSQL insert statement. pgsql must have access privileged to the excel files. The permission issue applies to this fdw extensions. The downside is that you can't change file location or name easily within pgsql like in the previous approach.Ī friendly reminder. It load data in one time.īut this extension also support ODBC interface, it should be possible to use windows' ODBC excel file driver to create a ODBC source for the excel file and use ogr_fdw or any other pgsql's ODBC foreign data wrapper to query this intermediate ODBC source. which is another reason I didn't use this extension. This plugin supports both XLSX and XLS file.Īccording to the document it also possible to write data back into the spreadsheet file, but all the fancy formatting in your excel will be lost, the file is recreated on write. Just change the path and name in definition, and update the definition will be enough. This is especially useful, if you have many small files with the same table structure. ogr_fdw_info -s "C:/excel.xlsx" -l "sheetname"Įxecute the generated definition code in pgsql, a foreign table is created and mapped to your excel file. Use "ogr_fdw_info.exe -l" to prob a individual sheet and generate a table definition code. Use ogr_fdw_info.exe to prob the excel file for sheet name list ogr_fdw_info -s "C:/excel.xlsx" Before the test drive, the module needs to be installed by executing: CREATE EXTENSION ogr_fdw The ogr_fdw pre-build binaries for windows are located here Ĭhange the version number in link to download corresponding builds.Įxtract the file to pgsql folder to overwrite the same name sub-folders. ![]() (Major reason I can't use this wonderful extension.) with these characters, you will probably not be able to reference the column in pgsql due to encoding issue. To do this, the table header in your spreadsheet must be clean, the current ogr_fdw driver can't deal with wide-width character or new lines etc. This is useful for reading data from the same regularly updated table ![]() With ogr_fdw module, its possible to open the excel sheet as foreign table in pgsql and query it directly like any other regular tables in pgsql. Some common clean-up steps can be done from pgAdmin or psql: ALTER TABLE some_table_name RENAME "row.names" TO id ĪLTER TABLE some_table_name ALTER COLUMN id TYPE integer USING id::integer ĪLTER TABLE some_table_name ADD PRIMARY KEY (id) Now some_table_name should appear in the database. Push it to PostgreSQLĮnsure you have RPostgreSQL installed from CRAN, then make a connection and send the ame to the database: library(RPostgreSQL)Ĭonn <- dbConnect(PostgreSQL(), dbname="mydb") If you have RStudio, you can easily view the d object to make sure it is as expected. CTRL C), then in R use this command to get it from the clipboard: d <- read.table("clipboard", header=TRUE, sep="\t", quote="\"", na.strings="", as.is=TRUE) However, a really simple method is to select the range of the Excel table (including the header), copy it (i.e. There are several ways to get a spreadsheet into R, such as XLConnect. R's ame objects are database-like, where named columns have explicit types, such as text or numbers. A method that I use is to load the table into R as a ame, then use dbWriteTable to push it to PostgreSQL. ![]()
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