Collations and character sets#

Dolt supports a subset of the character sets and collations that MySQL supports. Notably, the default character set is utf8mb4, while the default collation is utf8mb4_0900_bin (a case-sensitive collation). This default was chosen as it has the fastest implementation, and also from a legacy perspective, as before proper collation support was added, it was the only real collation that we supported. This differs from a standard MySQL instance, which defaults to utf8mb4_0900_ai_ci (a case-insensitive collation). Character sets and collations are added upon request, so please file an issue if a character set or collation that you need is missing.

Currently supporting 181 of 286 MySQL collations.

Collation	Character Set	Supported
armscii8_bin	armscii8	❌
armscii8_general_ci	armscii8	❌
ascii_bin	ascii	✅
ascii_general_ci	ascii	✅
big5_bin	big5	❌
big5_chinese_ci	big5	❌
binary	binary	✅
cp1250_bin	cp1250	❌
cp1250_croatian_ci	cp1250	❌
cp1250_czech_cs	cp1250	❌
cp1250_general_ci	cp1250	❌
cp1250_polish_ci	cp1250	❌
cp1251_bin	cp1251	❌
cp1251_bulgarian_ci	cp1251	❌
cp1251_general_ci	cp1251	❌
cp1251_general_cs	cp1251	❌
cp1251_ukrainian_ci	cp1251	❌
cp1256_bin	cp1256	✅
cp1256_general_ci	cp1256	✅
cp1257_bin	cp1257	✅
cp1257_general_ci	cp1257	✅
cp1257_lithuanian_ci	cp1257	✅
cp850_bin	cp850	❌
cp850_general_ci	cp850	❌
cp852_bin	cp852	❌
cp852_general_ci	cp852	❌
cp866_bin	cp866	❌
cp866_general_ci	cp866	❌
cp932_bin	cp932	❌
cp932_japanese_ci	cp932	❌
dec8_bin	dec8	✅
dec8_swedish_ci	dec8	✅
eucjpms_bin	eucjpms	❌
eucjpms_japanese_ci	eucjpms	❌
euckr_bin	euckr	❌
euckr_korean_ci	euckr	❌
gb18030_bin	gb18030	❌
gb18030_chinese_ci	gb18030	❌
gb18030_unicode_520_ci	gb18030	❌
gb2312_bin	gb2312	❌
gb2312_chinese_ci	gb2312	❌
gbk_bin	gbk	❌
gbk_chinese_ci	gbk	❌
geostd8_bin	geostd8	✅
geostd8_general_ci	geostd8	✅
greek_bin	greek	❌
greek_general_ci	greek	❌
hebrew_bin	hebrew	❌
hebrew_general_ci	hebrew	❌
hp8_bin	hp8	❌
hp8_english_ci	hp8	❌
keybcs2_bin	keybcs2	❌
keybcs2_general_ci	keybcs2	❌
koi8r_bin	koi8r	❌
koi8r_general_ci	koi8r	❌
koi8u_bin	koi8u	❌
koi8u_general_ci	koi8u	❌
latin1_bin	latin1	✅
latin1_danish_ci	latin1	✅
latin1_general_ci	latin1	✅
latin1_general_cs	latin1	✅
latin1_german1_ci	latin1	✅
latin1_german2_ci	latin1	✅
latin1_spanish_ci	latin1	✅
latin1_swedish_ci	latin1	✅
latin2_bin	latin2	❌
latin2_croatian_ci	latin2	❌
latin2_czech_cs	latin2	❌
latin2_general_ci	latin2	❌
latin2_hungarian_ci	latin2	❌
latin5_bin	latin5	❌
latin5_turkish_ci	latin5	❌
latin7_bin	latin7	✅
latin7_estonian_cs	latin7	✅
latin7_general_ci	latin7	✅
latin7_general_cs	latin7	✅
macce_bin	macce	❌
macce_general_ci	macce	❌
macroman_bin	macroman	❌
macroman_general_ci	macroman	❌
sjis_bin	sjis	❌
sjis_japanese_ci	sjis	❌
swe7_bin	swe7	✅
swe7_swedish_ci	swe7	✅
tis620_bin	tis620	❌
tis620_thai_ci	tis620	❌
ucs2_bin	ucs2	❌
ucs2_croatian_ci	ucs2	❌
ucs2_czech_ci	ucs2	❌
ucs2_danish_ci	ucs2	❌
ucs2_esperanto_ci	ucs2	❌
ucs2_estonian_ci	ucs2	❌
ucs2_general_ci	ucs2	❌
ucs2_general_mysql500_ci	ucs2	❌
ucs2_german2_ci	ucs2	❌
ucs2_hungarian_ci	ucs2	❌
ucs2_icelandic_ci	ucs2	❌
ucs2_latvian_ci	ucs2	❌
ucs2_lithuanian_ci	ucs2	❌
ucs2_persian_ci	ucs2	❌
ucs2_polish_ci	ucs2	❌
ucs2_roman_ci	ucs2	❌
ucs2_romanian_ci	ucs2	❌
ucs2_sinhala_ci	ucs2	❌
ucs2_slovak_ci	ucs2	❌
ucs2_slovenian_ci	ucs2	❌
ucs2_spanish2_ci	ucs2	❌
ucs2_spanish_ci	ucs2	❌
ucs2_swedish_ci	ucs2	❌
ucs2_turkish_ci	ucs2	❌
ucs2_unicode_520_ci	ucs2	❌
ucs2_unicode_ci	ucs2	❌
ucs2_vietnamese_ci	ucs2	❌
ujis_bin	ujis	❌
ujis_japanese_ci	ujis	❌
utf16_bin	utf16	✅
utf16_croatian_ci	utf16	✅
utf16_czech_ci	utf16	✅
utf16_danish_ci	utf16	✅
utf16_esperanto_ci	utf16	✅
utf16_estonian_ci	utf16	✅
utf16_general_ci	utf16	✅
utf16_german2_ci	utf16	✅
utf16_hungarian_ci	utf16	✅
utf16_icelandic_ci	utf16	✅
utf16_latvian_ci	utf16	✅
utf16_lithuanian_ci	utf16	✅
utf16_persian_ci	utf16	✅
utf16_polish_ci	utf16	✅
utf16_roman_ci	utf16	✅
utf16_romanian_ci	utf16	✅
utf16_sinhala_ci	utf16	✅
utf16_slovak_ci	utf16	✅
utf16_slovenian_ci	utf16	✅
utf16_spanish2_ci	utf16	✅
utf16_spanish_ci	utf16	✅
utf16_swedish_ci	utf16	✅
utf16_turkish_ci	utf16	✅
utf16_unicode_520_ci	utf16	✅
utf16_unicode_ci	utf16	✅
utf16_vietnamese_ci	utf16	✅
utf16le_bin	utf16le	❌
utf16le_general_ci	utf16le	❌
utf32_bin	utf32	✅
utf32_croatian_ci	utf32	✅
utf32_czech_ci	utf32	✅
utf32_danish_ci	utf32	✅
utf32_esperanto_ci	utf32	✅
utf32_estonian_ci	utf32	✅
utf32_general_ci	utf32	✅
utf32_german2_ci	utf32	✅
utf32_hungarian_ci	utf32	✅
utf32_icelandic_ci	utf32	✅
utf32_latvian_ci	utf32	✅
utf32_lithuanian_ci	utf32	✅
utf32_persian_ci	utf32	✅
utf32_polish_ci	utf32	✅
utf32_roman_ci	utf32	✅
utf32_romanian_ci	utf32	✅
utf32_sinhala_ci	utf32	✅
utf32_slovak_ci	utf32	✅
utf32_slovenian_ci	utf32	✅
utf32_spanish2_ci	utf32	✅
utf32_spanish_ci	utf32	✅
utf32_swedish_ci	utf32	✅
utf32_turkish_ci	utf32	✅
utf32_unicode_520_ci	utf32	✅
utf32_unicode_ci	utf32	✅
utf32_vietnamese_ci	utf32	✅
utf8mb3_bin	utf8mb3	✅
utf8mb3_croatian_ci	utf8mb3	✅
utf8mb3_czech_ci	utf8mb3	✅
utf8mb3_danish_ci	utf8mb3	✅
utf8mb3_esperanto_ci	utf8mb3	✅
utf8mb3_estonian_ci	utf8mb3	✅
utf8mb3_general_ci	utf8mb3	✅
utf8mb3_general_mysql500_ci	utf8mb3	✅
utf8mb3_german2_ci	utf8mb3	✅
utf8mb3_hungarian_ci	utf8mb3	✅
utf8mb3_icelandic_ci	utf8mb3	✅
utf8mb3_latvian_ci	utf8mb3	✅
utf8mb3_lithuanian_ci	utf8mb3	✅
utf8mb3_persian_ci	utf8mb3	✅
utf8mb3_polish_ci	utf8mb3	✅
utf8mb3_roman_ci	utf8mb3	✅
utf8mb3_romanian_ci	utf8mb3	✅
utf8mb3_sinhala_ci	utf8mb3	✅
utf8mb3_slovak_ci	utf8mb3	✅
utf8mb3_slovenian_ci	utf8mb3	✅
utf8mb3_spanish2_ci	utf8mb3	✅
utf8mb3_spanish_ci	utf8mb3	✅
utf8mb3_swedish_ci	utf8mb3	✅
utf8mb3_tolower_ci	utf8mb3	✅
utf8mb3_turkish_ci	utf8mb3	✅
utf8mb3_unicode_520_ci	utf8mb3	✅
utf8mb3_unicode_ci	utf8mb3	✅
utf8mb3_vietnamese_ci	utf8mb3	✅
utf8mb4_0900_ai_ci	utf8mb4	✅
utf8mb4_0900_as_ci	utf8mb4	✅
utf8mb4_0900_as_cs	utf8mb4	✅
utf8mb4_0900_bin	utf8mb4	✅
utf8mb4_bg_0900_ai_ci	utf8mb4	❌
utf8mb4_bg_0900_as_cs	utf8mb4	❌
utf8mb4_bin	utf8mb4	✅
utf8mb4_bs_0900_ai_ci	utf8mb4	❌
utf8mb4_bs_0900_as_cs	utf8mb4	❌
utf8mb4_croatian_ci	utf8mb4	✅
utf8mb4_cs_0900_ai_ci	utf8mb4	✅
utf8mb4_cs_0900_as_cs	utf8mb4	✅
utf8mb4_czech_ci	utf8mb4	✅
utf8mb4_da_0900_ai_ci	utf8mb4	✅
utf8mb4_da_0900_as_cs	utf8mb4	✅
utf8mb4_danish_ci	utf8mb4	✅
utf8mb4_de_pb_0900_ai_ci	utf8mb4	✅
utf8mb4_de_pb_0900_as_cs	utf8mb4	✅
utf8mb4_eo_0900_ai_ci	utf8mb4	✅
utf8mb4_eo_0900_as_cs	utf8mb4	✅
utf8mb4_es_0900_ai_ci	utf8mb4	✅
utf8mb4_es_0900_as_cs	utf8mb4	✅
utf8mb4_es_trad_0900_ai_ci	utf8mb4	✅
utf8mb4_es_trad_0900_as_cs	utf8mb4	✅
utf8mb4_esperanto_ci	utf8mb4	✅
utf8mb4_estonian_ci	utf8mb4	✅
utf8mb4_et_0900_ai_ci	utf8mb4	✅
utf8mb4_et_0900_as_cs	utf8mb4	✅
utf8mb4_general_ci	utf8mb4	✅
utf8mb4_german2_ci	utf8mb4	✅
utf8mb4_gl_0900_ai_ci	utf8mb4	❌
utf8mb4_gl_0900_as_cs	utf8mb4	❌
utf8mb4_hr_0900_ai_ci	utf8mb4	✅
utf8mb4_hr_0900_as_cs	utf8mb4	✅
utf8mb4_hu_0900_ai_ci	utf8mb4	✅
utf8mb4_hu_0900_as_cs	utf8mb4	✅
utf8mb4_hungarian_ci	utf8mb4	✅
utf8mb4_icelandic_ci	utf8mb4	✅
utf8mb4_is_0900_ai_ci	utf8mb4	✅
utf8mb4_is_0900_as_cs	utf8mb4	✅
utf8mb4_ja_0900_as_cs	utf8mb4	✅
utf8mb4_ja_0900_as_cs_ks	utf8mb4	✅
utf8mb4_la_0900_ai_ci	utf8mb4	✅
utf8mb4_la_0900_as_cs	utf8mb4	✅
utf8mb4_latvian_ci	utf8mb4	✅
utf8mb4_lithuanian_ci	utf8mb4	✅
utf8mb4_lt_0900_ai_ci	utf8mb4	✅
utf8mb4_lt_0900_as_cs	utf8mb4	✅
utf8mb4_lv_0900_ai_ci	utf8mb4	✅
utf8mb4_lv_0900_as_cs	utf8mb4	✅
utf8mb4_mn_cyrl_0900_ai_ci	utf8mb4	❌
utf8mb4_mn_cyrl_0900_as_cs	utf8mb4	❌
utf8mb4_nb_0900_ai_ci	utf8mb4	❌
utf8mb4_nb_0900_as_cs	utf8mb4	❌
utf8mb4_nn_0900_ai_ci	utf8mb4	❌
utf8mb4_nn_0900_as_cs	utf8mb4	❌
utf8mb4_persian_ci	utf8mb4	✅
utf8mb4_pl_0900_ai_ci	utf8mb4	✅
utf8mb4_pl_0900_as_cs	utf8mb4	✅
utf8mb4_polish_ci	utf8mb4	✅
utf8mb4_ro_0900_ai_ci	utf8mb4	✅
utf8mb4_ro_0900_as_cs	utf8mb4	✅
utf8mb4_roman_ci	utf8mb4	✅
utf8mb4_romanian_ci	utf8mb4	✅
utf8mb4_ru_0900_ai_ci	utf8mb4	✅
utf8mb4_ru_0900_as_cs	utf8mb4	✅
utf8mb4_sinhala_ci	utf8mb4	✅
utf8mb4_sk_0900_ai_ci	utf8mb4	✅
utf8mb4_sk_0900_as_cs	utf8mb4	✅
utf8mb4_sl_0900_ai_ci	utf8mb4	✅
utf8mb4_sl_0900_as_cs	utf8mb4	✅
utf8mb4_slovak_ci	utf8mb4	✅
utf8mb4_slovenian_ci	utf8mb4	✅
utf8mb4_spanish2_ci	utf8mb4	✅
utf8mb4_spanish_ci	utf8mb4	✅
utf8mb4_sr_latn_0900_ai_ci	utf8mb4	❌
utf8mb4_sr_latn_0900_as_cs	utf8mb4	❌
utf8mb4_sv_0900_ai_ci	utf8mb4	✅
utf8mb4_sv_0900_as_cs	utf8mb4	✅
utf8mb4_swedish_ci	utf8mb4	✅
utf8mb4_tr_0900_ai_ci	utf8mb4	✅
utf8mb4_tr_0900_as_cs	utf8mb4	✅
utf8mb4_turkish_ci	utf8mb4	✅
utf8mb4_unicode_520_ci	utf8mb4	✅
utf8mb4_unicode_ci	utf8mb4	✅
utf8mb4_vi_0900_ai_ci	utf8mb4	✅
utf8mb4_vi_0900_as_cs	utf8mb4	✅
utf8mb4_vietnamese_ci	utf8mb4	✅
utf8mb4_zh_0900_as_cs	utf8mb4	✅