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SQLite Converting Text to Date

Parse this date text: Thu Oct 31 00:00:00 EDT 2019

Use the strftime function in SQLite to parse the given date text into the SQLite date type. However, the provided date format includes the timezone information, which SQLite doesn't directly support. To parse the date correctly, you may need to adjust the date string to a format SQLite recognizes.

Assuming your date string is "Thu Oct 31 00:00:00 EDT 2019," you can use the following steps:

Convert the month abbreviation to a numeric month.
Reformat the date string to a format that SQLite can recognize.
Use the strftime function to parse the reformatted date.

Here's an example SQL statement that demonstrates this:

-- Assuming your table is named 'your_table' and the date string is in the column 'date_text'
UPDATE your_table
SET your_date_column = strftime('%Y-%m-%d %H:%M:%S', 
    substr(date_text, 25, 4) || '-' || 
    case substr(date_text, 5, 3)
        when 'Jan' then '01'
        when 'Feb' then '02'
        when 'Mar' then '03'
        when 'Apr' then '04'
        when 'May' then '05'
        when 'Jun' then '06'
        when 'Jul' then '07'
        when 'Aug' then '08'
        when 'Sep' then '09'
        when 'Oct' then '10'
        when 'Nov' then '11'
        when 'Dec' then '12'
    end || '-' || substr(date_text, 9, 2) || ' ' || 
    substr(date_text, 11, 8));

UPDATE your_table
SET your_date_column = strftime('%Y-%m-%d %H:%M:%S', 
    substr(date_text, 25, 4) || '-' || 
    CASE substr(date_text, 5, 3)
        WHEN 'Jan' THEN '01'
        WHEN 'Feb' THEN '02'
        WHEN 'Mar' THEN '03'
        WHEN 'Apr' THEN '04'
        WHEN 'May' THEN '05'
        WHEN 'Jun' THEN '06'
        WHEN 'Jul' THEN '07'
        WHEN 'Aug' THEN '08'
        WHEN 'Sep' THEN '09'
        WHEN 'Oct' THEN '10'
        WHEN 'Nov' THEN '11'
        WHEN 'Dec' THEN '12'
    END || '-' || substr('00' || substr(date_text, 9, 2), -2) || ' ' || 
    substr(date_text, 12, 8))
WHERE date_text != '';
-- Note: Adjust 'your_table' and 'your_date_column' based on your actual table and column names.

This SQL statement updates the your_date_column in the your_table table with the parsed date.

Please replace 'your_table' and 'your_date_column' with your actual table and column names.

This approach assumes that the date format remains consistent for all entries in your database. If the date format varies, you may need to adjust the parsing logic accordingly.

Learn about converting sqlite to indexeddb.