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select: add MISSING operator support (#14406)

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Probably not full support, but for regular checks it should work.

Fixes #14358
This commit is contained in:
Klaus Post
2022-02-25 12:31:19 -08:00
committed by GitHub
parent e43cc316ff
commit 88fd1cba71
8 changed files with 153 additions and 29 deletions
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5
internal/s3select/sql/parser.go
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@@ -340,7 +340,8 @@ type LitValue struct {
Int *float64 `parser:" | @Int"` // To avoid value out of range, use float64 instead
String *LiteralString `parser:" | @LitString"`
Boolean *Boolean `parser:" | @(\"TRUE\" | \"FALSE\")"`
Null bool `parser:" | @\"NULL\")"`
Null bool `parser:" | @\"NULL\""`
Missing bool `parser:" | @\"MISSING\")"`
}
// Identifier represents a parsed identifier
@@ -352,7 +353,7 @@ type Identifier struct {
var (
sqlLexer = lexer.Must(lexer.Regexp(`(\s+)` +
`|(?P<Timeword>(?i)\b(?:YEAR|MONTH|DAY|HOUR|MINUTE|SECOND|TIMEZONE_HOUR|TIMEZONE_MINUTE)\b)` +
`|(?P<Keyword>(?i)\b(?:SELECT|FROM|TOP|DISTINCT|ALL|WHERE|GROUP|BY|HAVING|UNION|MINUS|EXCEPT|INTERSECT|ORDER|LIMIT|OFFSET|TRUE|FALSE|NULL|IS|NOT|ANY|SOME|BETWEEN|AND|OR|LIKE|ESCAPE|AS|IN|BOOL|INT|INTEGER|STRING|FLOAT|DECIMAL|NUMERIC|TIMESTAMP|AVG|COUNT|MAX|MIN|SUM|COALESCE|NULLIF|CAST|DATE_ADD|DATE_DIFF|EXTRACT|TO_STRING|TO_TIMESTAMP|UTCNOW|CHAR_LENGTH|CHARACTER_LENGTH|LOWER|SUBSTRING|TRIM|UPPER|LEADING|TRAILING|BOTH|FOR)\b)` +
`|(?P<Keyword>(?i)\b(?:SELECT|FROM|TOP|DISTINCT|ALL|WHERE|GROUP|BY|HAVING|UNION|MINUS|EXCEPT|INTERSECT|ORDER|LIMIT|OFFSET|TRUE|FALSE|NULL|IS|NOT|ANY|SOME|BETWEEN|AND|OR|LIKE|ESCAPE|AS|IN|BOOL|INT|INTEGER|STRING|FLOAT|DECIMAL|NUMERIC|TIMESTAMP|AVG|COUNT|MAX|MIN|SUM|COALESCE|NULLIF|CAST|DATE_ADD|DATE_DIFF|EXTRACT|TO_STRING|TO_TIMESTAMP|UTCNOW|CHAR_LENGTH|CHARACTER_LENGTH|LOWER|SUBSTRING|TRIM|UPPER|LEADING|TRAILING|BOTH|FOR|MISSING)\b)` +
`|(?P<Ident>[a-zA-Z_][a-zA-Z0-9_]*)` +
`|(?P<QuotIdent>"([^"]*("")?)*")` +
`|(?P<Float>\d*\.\d+([eE][-+]?\d+)?)` +