CSV
Mapping CSV Columns to Table Columns With LOAD DATA
Skip, reorder and compute columns in LOAD DATA with a column list, user variables and SET, plus the silent shift a short column list causes.
7 min read
Library
Everything you need to level up your coding skills.
CSV
Importing a CSV Into MySQL With a Header Row and Odd Quotes
Skip a header with IGNORE 1 LINES, then handle doubled quotes, backslashes, embedded newlines and Windows line endings that LOAD DATA treats differently.
7 min read
CSV
MySQL LOAD DATA LOCAL INFILE Disabled and How to Enable It
Two switches control LOAD DATA LOCAL, one on the server and one on the client, each failing with its own error code. Enable both safely and know the risk.
6 min read
CSV
MySQL Error 1290 The Server Is Running With secure file priv
Error 1290 blocks LOAD DATA INFILE and INTO OUTFILE outside one directory. Find the allowed path, move the file there, or switch to LOCAL and know the cost.
6 min read
CSV
Using LOAD DATA INFILE to Import a CSV Into MySQL Tables
Every clause of LOAD DATA INFILE that matters for a CSV, from the tab default to NULL handling, with the output of each variant on MySQL 8.4.
7 min read
Editor's pick
CSVGuide
How to Import a CSV File Into MySQL the Reliable Way
LOAD DATA LOCAL turns bad values into warnings and still reports success. Import a CSV into MySQL safely, with a script that checks before it swaps.
23 min read
Excel
Why an Exported Excel Date Shows as a Number and the Fix
An exported date shows as 45292 because Excel stores dates as numbers and the cell has no date format. See the cause, the code fix and a file repair.
7 min read
Excel
Making Excel Exports Open Cleanly Every Time on Any PC
Stop repair prompts, garbled accents and wrong columns when exports open in Excel: legal characters, sheet names, time zones, NaN, BOM and separators.
7 min read
Excel
Emailing a Scheduled Excel Report From a Database Job
Build a job that queries a database, writes an Excel file and emails it on a schedule with smtplib and cron, with safe credentials and failure alerts.
8 min read
Excel
Freezing Panes Filters and Column Widths From Code
Freeze the header row, add filter buttons and set column widths from Python with openpyxl and XlsxWriter, including an auto-width helper and print settings.
7 min read
Excel
Adding Formulas and Number Formats From Python Code
Write Excel formulas and number formats from Python with openpyxl and XlsxWriter: English syntax, cached values, table references, percent and date codes.
7 min read
Excel
Building a Multi Sheet Excel Report From SQL Queries
Build one Excel workbook from several SQL queries: a summary sheet, a sheet per region, formulas that point across sheets and an index with working links.
7 min read
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