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codenotary / immudb
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Repo Added 30 May 2020 08:52AM UTC
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LAST BUILD ON BRANCH fix/issue-2100-sql-panics
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25 Jun 2026 02:56PM UTC coverage: 84.972% (-0.009%) from 84.981%
28179252400

Pull #2101

gh-ci

vchaindz
fix(sql): prevent two SQL engine panics introduced in 1.11.0 (#2100)

Two server-crashing panics were reachable from ordinary, valid client
traffic after upgrading to 1.11.0:

1. nil pointer dereference in the disk-spill sort path. The 1.11.0
   projection-pushdown optimization leaves Row.ValuesByPosition[i] nil for
   columns a query does not reference, assuming those slots are never
   accessed. The new file-sort encode path (fileSorter.encodeRow) walked
   every position and called v.Type() on the nil slots, crashing on large
   ORDER BY ... OFFSET result sets that spill to a temp file. encodeRow is
   now a *fileSorter method that substitutes a typed NULL
   (&NullValue{t: s.colTypes[i]}) for nil slots, which round-trips through
   the temp file as SQL NULL.

2. index out of range [0] in db.SQLQuery. Since 1.11.0 the grammar accepts
   empty/comment-only input and ParseSQL returns an empty statement slice
   with no error, so empty probe queries panicked on stmts[0]. Added a
   len(stmts) == 0 guard returning ErrExpectingDQLStmt, matching the
   guard db.SQLExec already uses.

Adds regression tests reproducing both panics.
Pull Request #2101: fix(sql): prevent two SQL engine panics introduced in 1.11.0 (#2100)

13 of 13 new or added lines in 2 files covered. (100.0%)

11 existing lines in 4 files now uncovered.

45223 of 53221 relevant lines covered (84.97%)

126799.02 hits per line

Relevant lines Covered
Build:
Build:
53221 RELEVANT LINES 45223 COVERED LINES
126799.02 HITS PER LINE
Source Files on fix/issue-2100-sql-panics
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Coverage ∆ File Lines Relevant Covered Missed Hits/Line

Recent builds

Builds Branch Commit Type Ran Committer Via Coverage
28179252400 fix/issue-2100-sql-panics fix(sql): prevent two SQL engine panics introduced in 1.11.0 (#2100) Two server-crashing panics were reachable from ordinary, valid client traffic after upgrading to 1.11.0: 1. nil pointer dereference in the disk-spill sort path. The 1.11.0 p... Pull #2101 25 Jun 2026 03:03PM UTC vchaindz gh-ci
84.97
28174990179 fix/issue-2100-sql-panics fix(sql): prevent two SQL engine panics introduced in 1.11.0 (#2100) Two server-crashing panics were reachable from ordinary, valid client traffic after upgrading to 1.11.0: 1. nil pointer dereference in the disk-spill sort path. The 1.11.0 p... Pull #2101 25 Jun 2026 01:57PM UTC vchaindz gh-ci
84.98
28160470718 fix/issue-2100-sql-panics fix(sql): prevent two SQL engine panics introduced in 1.11.0 (#2100) Two server-crashing panics were reachable from ordinary, valid client traffic after upgrading to 1.11.0: 1. nil pointer dereference in the disk-spill sort path. The 1.11.0 p... Pull #2101 25 Jun 2026 09:34AM UTC vchaindz gh-ci
84.97
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