Function ReleaseAST

pkg/sql/ast/pool.go:458–480

ReleaseAST returns an AST container to the pool for reuse. ReleaseAST cleans up and returns the AST to the pool, allowing it to be reused in future NewAST() calls. This is critical for memory efficiency and performance. Cleanup Process: 1. Returns all statement objects to their respective pools 2.

(ast *AST)

//
// See also: NewAST(), PutSelectStatement(), PutInsertStatement()
func ReleaseAST(ast *AST) {
	if ast == nil {
		return
	}

	// Clean up all statements
	for i := range ast.Statements {
		releaseStatement(ast.Statements[i])
		ast.Statements[i] = nil
	}

	// Reset slice but keep capacity
	ast.Statements = ast.Statements[:0]

	// Reset comments but keep capacity
	if cap(ast.Comments) > 0 {
		ast.Comments = ast.Comments[:0]
	}

	// Return to pool
	metrics.RecordNamedPoolPut("ast")
	astPool.Put(ast)
}

// ReleaseStatements returns a slice of statements back to their respective pools.
// Use this to clean up statements returned by ParseWithRecovery, which returns