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row0sel.c:

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Print a warning if MySQL uses a partial-field key value prefix in a search; that would not work if the search flag would happen to be HA_READ_PREFIX_LAST
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heikki@hundin.mysql.fi 2003-02-19 19:38:38 +02:00
parent dc5bca35bb
commit 61ccb631bb
1 changed files with 13 additions and 1 deletions
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14
innobase/row/row0sel.c
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@ -1926,7 +1926,19 @@ row_sel_convert_mysql_key_to_innobase(
if (key_ptr > key_end) {
/* The last field in key was not a complete
field but a prefix of it */
field but a prefix of it.
Print a warning about this! HA_READ_PREFIX_LAST
does not currently work in InnoDB with partial-field
key value prefixes. Since MySQL currently uses a
padding trick to calculate LIKE 'abc%' type queries
there should never be partial-field prefixes
in searches. */
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Warning: using a partial-field key prefix in search\n");
ut_ad(dfield_get_len(dfield) != UNIV_SQL_NULL);