Usually happens when importing a huge amount of data to a table with many columns (total data length too large).

The error message would be similar to

ERROR 1118 (42000): Row size too large (> 8126). Changing some columns to
TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored
inline.

or

[Warning] InnoDB: Cannot add field col in table db1.tab because after adding it,
the row size is 8478 which is greater than maximum allowed size (8126) for a
record on index leaf page.

On MariaDB document, you can find the root cause and relative solution, such as:

SET SESSION innodb_strict_mode=OFF;

or

SET GLOBAL innodb_strict_mode=OFF;

or

[mariadb] …
innodb_strict_mode=OFF

However, it seems not working on windows platform using WAMPServer (I use 3.2.0). The reason is that on WAMPServer, it’s set in “sql-mode” parameter.

Above is the default setting, however, the strict mode is ON by default even you keep the default setting.

So you can un-comment

sql-mode=””

or change settings to “sql-mode->none” in the tray menu as below.