CSV
Exporting MySQL Query Results to CSV With INTO OUTFILE
INTO OUTFILE writes on the server and its popular recipe corrupts newlines and NULLs: 4 of 8 rows read back. A variant reads 7, a client script reads 8.
11 min read
Tag
export
28 posts
CSV
Exporting a PostgreSQL Query to CSV With psql and COPY
Export a PostgreSQL query to CSV with psql: NULL against empty string, delimiter and quoting options, encodings, why variables fail and the file left behind.
9 min read
CSVGuide
Exporting Query Results to CSV From Five Major Databases
The same eight awkward rows exported from PostgreSQL, MySQL, SQLite, DuckDB and MongoDB, then read back: four tools return all 8, one recipe returns 4.
25 min read
YAML
Exporting a Table to YAML From PostgreSQL With Python
Export a PostgreSQL table to YAML with psycopg and PyYAML. Fix the UUID error, keep numerics exact as strings and compare with a to_jsonb pipeline.
7 min read
CSV
Exporting a SQLite Query Result to CSV From the Shell
Export a SQLite query to CSV with the shell, see exactly how 3.54 quotes values, writes NULL and ends lines, and learn which options change each.
8 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
Excel
Exporting MySQL Data to Excel With a Python Script
Export a MySQL query to a clean XLSX with PyMySQL and pandas, handling DECIMAL, zero dates, tinyint flags and utf8mb4, and compare it with Workbench.
7 min read