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fix(sql): avoid repeated full scans in large script execution

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Refs: #3335
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t8y2 committed 2026-09-22 19:04:58 +08:00
1 parent 8ffdbb2950
commit c1f2bbda44
4 files changed
+109 -22
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apps/desktop/src/lib/sql/sqlStatementRanges.ts
+5 -14
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@@ -385,14 +385,6 @@ export function splitSqlStatementRanges(sql: string, databaseType?: DatabaseType
};
const isWhitespace = (ch: string) => ch === " " || ch === "\t" || ch === "\r" || ch === "\n";
const nextLineBreak = (from: number) => {
const carriageReturn = sql.indexOf("\r", from);
const lineFeed = sql.indexOf("\n", from);
if (carriageReturn === -1) return lineFeed === -1 ? len : lineFeed;
if (lineFeed === -1) return carriageReturn;
return Math.min(carriageReturn, lineFeed);
};
const markContent = (pos: number) => {
if (statementStart === -1) {
// TDSQL accepts arbitrary leading block directives on the SQL line. The
@@ -554,7 +546,7 @@ export function splitSqlStatementRanges(sql: string, databaseType?: DatabaseType
if (databaseType === "mysql") {
if (pendingMysqlDirectiveStart === -1 || i > pendingMysqlDirectiveLineEnd) {
pendingMysqlDirectiveStart = i;
pendingMysqlDirectiveLineEnd = nextLineBreak(i);
pendingMysqlDirectiveLineEnd = findLineEnd(sql, i);
}
} else {
pendingMysqlDirectiveStart = -1;
@@ -2506,11 +2498,10 @@ function mysqlDelimiterDirectiveCursorRange(sql: string, pos: number, databaseTy
}
function findLineEnd(sql: string, pos: number): number {
const newline = sql.indexOf("\n", pos);
const carriageReturn = sql.indexOf("\r", pos);
if (newline === -1) return carriageReturn === -1 ? sql.length : carriageReturn;
if (carriageReturn === -1) return newline;
return Math.min(newline, carriageReturn);
for (let cursor = pos; cursor < sql.length; cursor += 1) {
if (sql[cursor] === "\n" || sql[cursor] === "\r") return cursor;
}
return sql.length;
}
function nextLineStart(sql: string, lineEnd: number): number {