Introduction of OpenTick? about opentick HOT 3 CLOSED

https://www.v2ex.com/t/513282

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Thanks for sharing the article!
The articles says Tick implements a subset of CQL. Can you elaborate on which specific query Tick supports and which it does not support?

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type Ast struct {
Select *AstSelect "SELECT" @@
Insert *AstInsert | "INSERT" @@
Create *AstCreate | "CREATE" @@
Drop *AstDrop | "DROP" @@
Delete *AstDelete | "DELETE" @@
}

type AstDrop struct {
Table *AstTableName "TABLE" @@
Database *string | "DATABASE" @Ident
}

type AstCreate struct {
Table *AstCreateTable "TABLE" @@
Database *AstCreateDatabase | "DATABASE" @@
}

type AstDelete struct {
Table *AstTableName "FROM" @@
Where *AstExpression ["WHERE" @@]
}

type AstCreateDatabase struct {
IfNotExists *string [@("IF" "NOT" "EXISTS")]
Name *string @Ident
}

type AstCreateTable struct {
IfNotExists *string [@("IF" "NOT" "EXISTS")]
Name *AstTableName @@
Cols []AstTypeDef "(" @@ {"," @@} ")"
}

type AstTypeDef struct {
Key []string "PRIMARY" "KEY" "(" @Ident {"," @Ident} ")"
Name *string | @Ident
Type *string @{"BIGINT" | "TINYINT" | "SMALLINT" | "INT" | "DOUBLE" | "FLOAT" | "TIMESTAMP" | "BOOLEAN" | "TEXT"}
}

type AstInsert struct {
Table *AstTableName "INTO" @@
Cols []string "(" @Ident {"," @Ident} ")"
Values []AstValue "VALUES" "(" @@ {"," @@} ")"
}

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