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Rechercher dans le manuel MySQL

28. 7. 7. 19 mysql _fetch _fields ()

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MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *result)

Description

Returns an array of all MYSQL_FIELD structures for a result set. Each structure provides the field definition for one column of the result set.

For metadata-optional connections, this function returns NULL when the resultset_metadata system variable is set to NONE. To check whether a result set has metadata, use the mysql_result_metadata() function. For details about managing result set metadata transfer, see Section 28.7.27, “C API Optional Result Set Metadata”.

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Return Values

An array of MYSQL_FIELD structures for all columns of a result set. NULL if the result set has no metadata.

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Errors

None.

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Example
unsigned int num_fields;
unsigned int i;
MYSQL_FIELD *fields;

num_fields = mysql_num_fields(result);
fields = mysql_fetch_fields(result);
for(i = 0; i < num_fields; i++)
{
   printf("Field %u is %s\n", i, fields[i].name);
}

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Document created the 26/06/2006, last modified the 26/10/2018
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References

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