const regex = /^ \h*+ (?:substr[(])? (?: Z.VALUE_01 ) (?:,[^,]+,[^,]+[)])? \h* as \h+ (\w+) \v* ,? \v* $/gmi;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^ \\h*+ (?:substr[(])? (?: Z.VALUE_01 ) (?:,[^,]+,[^,]+[)])? \\h* as \\h+ (\\w+) \\v* ,? \\v* $', 'gmi')
const str = `--> Some comment
CREATE VIEW ABC
AS SELECT
Z.NUMBER AS ID,
Z.LANGUAGE AS LNG,
SUBSTR(Z.VALUE_01,01,02) AS RUN_NUMB,
SUBSTR(Z.TXT_VALUE_01,01,79) AS TXT
FROM
MYTABLE Z
WHERE ID = '0033'
AND LNG = 'DE'
`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions