allow sqlify to optionally return an array of SQL commands

[klobetime]

I have SQL that has the occasional semicolon embedded. Converting this to AST is fine, but bringing it back to SQL causes issues when there are multiple SQL statements. Currently, sqlify() uses a join(' ; ') to combine all the statements into a single string, but when I need to get at those a split(';') finds those embedded semis and the results aren't what we really need.

I added a new opt, asArray, that will omit the join and give back an array of SQL commands rather than a string.

const opt = {
  asArray: true
}
const { Parser } = require('node-sql-parser')
const parser = new Parser()
// opt only affect sqlify() but it doesn't hurt to pass it to astify() as well
const ast = parser.astify("SELECT * FROM t; SELECT x AS has_semis FROM y WHERE notes LIKE '%;%'", opt)
const sql = parser.sqlify(ast, opt)
console.log(JSON.stringify(sql)); // ["SELECT * FROM `t`","SELECT `x` AS `has_semis` FROM `y` WHERE `notes` LIKE '%;%'"]