const regex = /\[.+?\](?![\.])/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\[.+?\\](?![\\.])', 'g')
const str = `I am parsing some SQL statements and have found places where the SELECT statement may be:
SELECT [tblCustomer].[FirstName], [tblCustomer.LastName], [tblOrder].[Order_No]
and as you see the second column has a \`.\` inside the square brackets. This is acceptable in Access SQL but not SQL Server. I'm trying to build a RegEx to identify when there is a \`.\` inside square brackets and replace it with \`].[\`
I've tried: \`\\[.+?\\](?![\\.])\` which will get me a period inside square brackets but it doesn't stop searching when it finds the closing bracket.
I'm using ECMAScript to be compatible with VBA and I don't have concerns about nested brackets.
Another example:
SELECT IIf([tbl_ref_Service].[Root_Service] Is Null,[tbl_ref_Service].[Service],[tbl_ref_Service].[Root_Service]) AS Root_Service, tbl_POC_Assigned.POC_ID, [tbl_POC_Assigned.Hex_ID] & "_" & [tbl_Hex.Generic_ID] & "_" & [tbl_Lateral.Service_ID] & "_" & [tbl_Hex.ODD_Micap] & "_Null" AS Tool_Generic_Line, tbl_Hex.Building_ID AS Hex_Building_ID, tbl_POC.Lateral_ID, tbl_Generic_Service.Peak_Flow, [Diversity_Factor]*[Peak_Flow] AS Avg_Flow, tbl_POC_Assigned.Flow, tbl_POC_Assigned.Flow_Avg`;
// 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