groupConcatStep 98198 ext/sqlite3/libsqlite/sqlite3.c AGGREGATE(group_concat, 1, 0, 0, groupConcatStep, groupConcatFinalize), groupConcatStep 98199 ext/sqlite3/libsqlite/sqlite3.c AGGREGATE(group_concat, 2, 0, 0, groupConcatStep, groupConcatFinalize),