what
37581f3a65
- sqlgen: 新增 BooleanFunctionLookup，生成 FUNC(LHS, RHS) 格式，优先级高于 BooleanOperatorLookup - dialect/duckdb: 使用 regexp_matches 替代 ~ 实现部分匹配，等价于 MySQL REGEXP - sqlgen/expression_sql_generator_test: 补充 BooleanFunctionLookup 测试用例，修正 encode_error 前缀 - sqlgen/sql_dialect_options_test: 验证 BooleanFunctionLookup 默认为 nil - dialect/duckdb_test: 新增 regexp_matches SQL 生成测试
46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
package duckdb
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import (
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_ "github.com/marcboeker/go-duckdb"
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"git.fsdpf.net/go/db"
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"git.fsdpf.net/go/db/exp"
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)
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func DialectOptions() *db.SQLDialectOptions {
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do := db.DefaultDialectOptions()
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// DuckDB uses PostgreSQL-style placeholders ($1, $2, etc.)
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do.PlaceHolderFragment = []byte("$")
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do.IncludePlaceholderNum = true
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// DuckDB supports most PostgreSQL features
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do.SupportsReturn = true
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do.SupportsOrderByOnUpdate = false
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do.SupportsLimitOnUpdate = false
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do.SupportsOrderByOnDelete = false
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do.SupportsLimitOnDelete = false
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do.SupportsConflictUpdateWhere = true
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do.SupportsInsertIgnoreSyntax = false
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do.SupportsConflictTarget = true
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do.SupportsWithCTE = true
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do.SupportsWithCTERecursive = true
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do.SupportsDistinctOn = true
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do.SupportsWindowFunction = true
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// Use double quotes for identifiers (PostgreSQL-style)
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do.QuoteRune = '"'
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// regexp_matches(col, pattern) 做部分匹配，等价于 MySQL REGEXP
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do.BooleanFunctionLookup = map[exp.BooleanOperation][]byte{
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exp.RegexpLikeOp: []byte("regexp_matches"),
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exp.RegexpILikeOp: []byte("regexp_matches"),
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}
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return do
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}
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func init() {
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db.RegisterDialect("duckdb", DialectOptions())
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}
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