odbx_field_value(3)

✨ odbx_field_value — OpenDBX ✨

okay so this is <pink>odbx_field_value(3)</pink> from the OpenDBX manual, and it's literally the function that hands you your data. bestie, let's go 💅

🌸 NAME 🌸

odbx_field_value — returns the data stored in a field. that's it, that's the vibe 🎀

🦋 SYNOPSIS 🦋

#include <opendbx/api.h>

const char* odbx_field_value (odbx_result_t* result, unsigned long pos);

💖 DESCRIPTION 💖

okay so odbx_field_value() returns a pointer to the field data you asked for with the column index pos. that field is part of the current row, which is the one you got back from the latest call to odbx_row_fetch(). iykyk 🔥

here's the tea: all values except binary objects come back as strings terminated by the zero character. yes, literally all of them — numeric values, dates, etc., all of it. so no cap, you have to convert them to their binary machine dependent representation before you can do any arithmetic operations. do not skip this step bestie, your math will be a whole mess 😭

if a value is undefined — like, "NULL" is attached to the field in the database — you get an equivalent NULL pointer back. so check it before you deref, fr fr 🙈

the result parameter this function needs must be a valid result set returned by odbx_result(), and it must not has been feed to odbx_result_finish() before. ngl, feeding a finished result set is giving undefined behavior energy 💀

valid column indices for the requested column you pass via pos start with zero and end with the value returned by odbx_column_count() minus one. so 0 through odbx_column_count() - 1, periodt. 👑

⭐ RETURN VALUE ⭐

the function gives you the address pointing to the beginning of the field value, where the string or binary object is stored in memory — handed right to you, the caller 🫶

it returns a NULL pointer if the field is a "NULL" value. slay, but also check it 💜

💀 ERRORS 💀

this function will also return zero if the result parameter is invalid, or if the value of pos is out of range. so if something's sus, it's probably one of those two things 🌈

🌸 SEE ALSO 🌸

• odbx_column_type()
• odbx_field_length()
• odbx_result()

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that's the whole page bestie, you ate 🍓

source: OpenDBX · version/date: 6 February 2026 · manual page: odbx_field_value(3) 🧚‍♀️✨