sql-cli 1.82.4

SQL query tool for CSV/JSON with both interactive TUI and non-interactive CLI modes - perfect for exploration and automation
Documentation 
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# Tier 5 — subqueries: scalar, derived-table, IN, EXISTS, and (the interesting
# part) correlated forms that exercise column scoping across query levels.

[[case]]
id = "scalar_subquery_uncorrelated"
data = "international_sales.csv"
sql = "SELECT region, amount, (SELECT MAX(amount) FROM international_sales) AS mx FROM international_sales"

[[case]]
id = "derived_table"
data = "international_sales.csv"
sql = "SELECT region, total FROM (SELECT region, SUM(amount) AS total FROM international_sales GROUP BY region) t"

[[case]]
id = "in_subquery_uncorrelated"
data = "trades.csv"
sql = "SELECT symbol, price FROM trades WHERE price IN (SELECT price FROM trades WHERE price > 185)"

[[case]]
id = "in_subquery_correlated"
data = "trades.csv"
sql = "SELECT symbol, price FROM trades t WHERE price IN (SELECT price FROM trades x WHERE x.symbol = t.symbol AND x.price > 185)"
# Correlation not applied: returns empty. See "correlated subqueries" in SQL_PARITY.md.
expect = "DIFFER"

[[case]]
id = "scalar_subquery_correlated"
data = "international_sales.csv"
sql = "SELECT region, amount FROM international_sales s WHERE amount = (SELECT MAX(amount) FROM international_sales x WHERE x.region = s.region)"
# Correlation not applied: inner sees 0 rows. See "correlated subqueries" in SQL_PARITY.md.
expect = "GAP"

[[case]]
id = "exists_correlated"
data = "trades.csv"
sql = "SELECT symbol, price FROM trades t WHERE EXISTS (SELECT 1 FROM trades x WHERE x.symbol = t.symbol AND x.price > t.price)"
# EXISTS not parsed. See "correlated subqueries" in SQL_PARITY.md.
expect = "GAP"

[[case]]
id = "not_exists_correlated"
data = "trades.csv"
sql = "SELECT symbol, price FROM trades t WHERE NOT EXISTS (SELECT 1 FROM trades x WHERE x.symbol = t.symbol AND x.price > t.price)"
# NOT EXISTS parse error. See "correlated subqueries" in SQL_PARITY.md.
expect = "GAP"

[[case]]
id = "scalar_subquery_in_select_correlated"
data = "international_sales.csv"
sql = "SELECT region, country, (SELECT SUM(amount) FROM international_sales x WHERE x.region = s.region) AS region_total FROM international_sales s"
# Correlation not applied in SELECT-list scalar subquery. See SQL_PARITY.md.
expect = "GAP"