add all charset introducers (#157)

go/vt/sqlparser/ast.go

@@ -4371,13 +4371,52 @@ type UnaryExpr struct {
 
 // UnaryExpr.Operator
 const (
-	UPlusStr   = "+"
-	UMinusStr  = "-"
-	TildaStr   = "~"
-	BangStr    = "!"
-	BinaryStr  = "binary "
-	UBinaryStr = "_binary "
-	Utf8mb4Str = "_utf8mb4 "
+	UPlusStr    = "+"
+	UMinusStr   = "-"
+	TildaStr    = "~"
+	BangStr     = "!"
+	BinaryStr   = "binary "
+	Armscii8Str = "_armscii8 "
+	AsciiStr    = "_ascii "
+	Big5Str     = "_big5 "
+	UBinaryStr  = "_binary "
+	Cp1250Str   = "_cp1250 "
+	Cp1251Str   = "_cp1251 "
+	Cp1256Str   = "_cp1256 "
+	Cp1257Str   = "_cp1257 "
+	Cp850Str    = "_cp850 "
+	Cp852Str    = "_cp852 "
+	Cp866Str    = "_cp866 "
+	Cp932Str    = "_cp932 "
+	Dec8Str     = "_dec8 "
+	EucjpmsStr  = "_eucjpms "
+	EuckrStr    = "_euckr "
+	Gb18030Str  = "_gb18030 "
+	Gb2312Str   = "_gb2312 "
+	GbkStr      = "_gbk "
+	Geostd8Str  = "_geostd8 "
+	GreekStr    = "_greek "
+	HebrewStr   = "_hebrew "
+	Hp8Str      = "_hp8 "
+	Keybcs2Str  = "_keybcs2 "
+	Koi8rStr    = "_koi8r "
+	Koi8uStr    = "_koi8u "
+	Latin1Str   = "_latin1 "
+	Latin2Str   = "_latin2 "
+	Latin5Str   = "_latin5 "
+	Latin7Str   = "_latin7 "
+	MacceStr    = "_macce "
+	MacromanStr = "_macroman "
+	SjisStr     = "_sjis "
+	Swe7Str     = "_swe7 "
+	Tis620Str   = "_tis620 "
+	Ucs2Str     = "_ucs2 "
+	UjisStr     = "_ujis "
+	Utf16Str    = "_utf16 "
+	Utf16leStr  = "_utf16le "
+	Utf32Str    = "_utf32 "
+	Utf8mb3Str  = "_utf8mb3 "
+	Utf8mb4Str  = "_utf8mb4 "
 )
 
 // Format formats the node.

go/vt/sqlparser/parse_test.go

@@ -2452,6 +2452,27 @@ var (
 		}, {
 			input:  "CREATE DATABASE `somedb` CHARACTER SET binary CHARSET binary COLLATE binary collate binary encryption 'n' encryption 'n'",
 			output: "create database somedb character set binary charset binary collate binary collate binary encryption n encryption n",
+		}, {
+			input:  "CREATE TABLE mytable (h int DEFAULT (date_format(now(),_utf8mb4'%Y')))",
+			output: "create table mytable (\n\th int default (date_format(now(), _utf8mb4 '%Y'))\n)",
+		}, {
+			input:  "CREATE TABLE mytable (pk int NOT NULL, col2 varchar(20) NOT NULL DEFAULT sometext, PRIMARY KEY (pk), CONSTRAINT status CHECK (col2 like _utf8mb4'%sometext%'))",
+			output: "create table mytable (\n\tpk int not null,\n\tcol2 varchar(20) not null default sometext,\n\tPRIMARY KEY (pk),\n\tconstraint status check (col2 like _utf8mb4 '%sometext%')\n)",
+		}, {
+			input:  "SELECT _utf8mb4'abc'",
+			output: "select _utf8mb4 'abc' from dual",
+		}, {
+			input:  "SELECT _latin1 X'4D7953514C'",
+			output: "select _latin1 X'4D7953514C' from dual",
+		}, {
+			input:  "SELECT _utf8mb4'abc' COLLATE utf8mb4_danish_ci",
+			output: "select _utf8mb4 'abc' collate utf8mb4_danish_ci from dual",
+		}, {
+			input:  "CREATE TABLE engine_cost (cost_name varchar(64) NOT NULL PRIMARY KEY, default_value float GENERATED ALWAYS AS ((case cost_name when _utf8mb3'io_block_read_cost' then 1.0 when _utf8mb3'memory_block_read_cost' then 0.25 else NULL end)) VIRTUAL)",
+			output: "create table engine_cost (\n\tcost_name varchar(64) not null primary key,\n\tdefault_value float generated always as ((case cost_name when _utf8mb3 'io_block_read_cost' then 1.0 when _utf8mb3 'memory_block_read_cost' then 0.25 else null end)) virtual\n)",
+		}, {
+			input:  "CREATE VIEW myview AS SELECT concat(a.first_name, _utf8mb4 ' ', a.last_name) AS name, if(a.active, _utf8mb4 'active', _utf8mb4 '') AS notes FROM a",
+			output: "create view myview as select concat(a.first_name, _utf8mb4 ' ', a.last_name) as name, if(a.active, _utf8mb4 'active', _utf8mb4 '') as notes from a",
 		},
 	}
 	// Any tests that contain multiple statements within the body (such as BEGIN/END blocks) should go here.