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Get Started Free →Optimizes SQL queries, designs database schemas, troubleshoots performance with window functions, CTEs, indexing strategies, and query plan analysis across database dialects.
.claude/skills/paperclipai-sql-pro/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-11 | ✓→✗ | ▼ Worse | -34% | 0% |
| case-06 | ✓→✓ | ＝ Same ✓ | -3% | 0% |
| case-07 | ✓→✓ | ＝ Same ✓ | 14% | 0% |
| case-08 | ✓→✓ | ＝ Same ✓ | 6% | 0% |
| case-21 | ✓→✓ | ＝ Same ✓ | 2% | 0% |
name: sql-pro description: > Optimizes SQL queries, designs database schemas, troubleshoots performance with window functions, CTEs, indexing strategies, and query plan analysis across database dialects. metadata: sources:
repo: jeffallan/claude-skills path: skills/sql-pro/SKILL.md commit: 3bf9a24b76a7c122f1fc05e83929fbc84e1c207a attribution: Jeffallan license: MIT usage: referenced
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-06 | pass→pass | 10,193 | 9,070 | -11% | 1 | 1 | 0% | 2,199 | 2,132 | -3% | 0 | 0 | — |
case-07 | pass→pass | 8,942 | 9,246 | +3% | 1 | 1 | 0% | 1,920 | 2,198 | +14% | 0 | 0 | — |
case-08 | pass→pass | 8,975 | 8,627 | -4% | 1 | 1 | 0% | 1,820 | 1,926 | +6% | 0 | 0 | — |
case-21 | pass→pass | 10,615 | 10,210 | -4% | 1 | 1 | 0% | 2,022 | 2,070 | +2% | 0 | 0 | — |
case-05 | pass→pass | 7,497 | 6,133 | -18% | 1 | 1 | 0% | 1,581 | 1,509 | -5% | 0 | 0 | — |
case-01 | pass→pass | 7,410 | 6,351 | -14% | 1 | 1 | 0% | 1,661 | 1,458 | -12% | 0 | 0 | — |
case-02 | pass→pass | 6,705 | 8,206 | +22% | 1 | 1 | 0% | 1,480 | 1,950 | +32% | 0 | 0 | — |
case-03 | fail→fail | 6,984 | 7,334 | +5% | 1 | 1 | 0% | 1,459 | 1,783 | +22% | 0 | 0 | — |
case-04 | pass→pass | 13,572 | 11,088 | -18% | 1 | 1 | 0% | 2,474 | 2,571 | +4% | 0 | 0 | — |
case-09 | pass→pass | 7,568 | 6,266 | -17% | 1 | 1 | 0% | 1,688 | 1,446 | -14% | 0 | 0 | — |
case-10 | pass→pass | 11,172 | 10,185 | -9% | 1 | 1 | 0% | 2,341 | 2,331 | -0% | 0 | 0 | — |
case-11 | pass→fail | 12,110 | 7,006 | -42% | 1 | 1 | 0% | 2,407 | 1,588 | -34% | 0 | 0 | — |
case-12 | pass→pass | 8,791 | 8,305 | -6% | 1 | 1 | 0% | 1,993 | 1,838 | -8% | 0 | 0 | — |
case-13 | pass→pass | 7,083 | 5,886 | -17% | 1 | 1 | 0% | 1,595 | 1,261 | -21% | 0 | 0 | — |
case-14 | pass→pass | 10,135 | 11,398 | +12% | 1 | 1 | 0% | 2,183 | 2,584 | +18% | 0 | 0 | — |
case-15 | pass→pass | 8,229 | 9,510 | +16% | 1 | 1 | 0% | 1,682 | 2,235 | +33% | 0 | 0 | — |
case-16 | pass→pass | 7,345 | 6,453 | -12% | 1 | 1 | 0% | 1,661 | 1,556 | -6% | 0 | 0 | — |
case-17 | pass→pass | 8,816 | 9,590 | +9% | 1 | 1 | 0% | 1,908 | 2,259 | +18% | 0 | 0 | — |
case-18 | pass→pass | 8,534 | 7,520 | -12% | 1 | 1 | 0% | 1,932 | 1,887 | -2% | 0 | 0 | — |
case-19 | pass→pass | 12,124 | 11,531 | -5% | 1 | 1 | 0% | 2,327 | 2,387 | +3% | 0 | 0 | — |
case-20 | pass→pass | 9,053 | 10,659 | +18% | 1 | 1 | 0% | 2,227 | 2,743 | +23% | 0 | 0 | — |
case-22 | pass→pass | 14,168 | 14,035 | -1% | 1 | 1 | 0% | 2,220 | 2,343 | +6% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted. The headline lift of -100 percentage points is the difference between those two pass rates over the 22 comparable cases. 1 case got worse with the skill loaded, and it is included in that figure.
Other measured skills in the registry, with their headline benchmark lift.