{"record":{"id":"b58c61190b01c7cb","repo":"tursodatabase/turso","slug":"exception-while-binding-null-value-at-position-po","errorCode":null,"errorMessage":"Exception while binding NULL value at position {position}","messagePattern":"Exception while binding NULL value at position (.+?)","errorType":"exception","errorClass":"java.sql.SQLException","httpStatus":null,"severity":"error","filePath":"bindings/java/src/main/java/tech/turso/core/TursoStatement.java","lineNumber":120,"sourceCode":"    if (columnNames != null) {\n      this.resultSet.setColumnNames(columnNames);\n    }\n  }\n\n  @Nullable\n  private native String[] columns(long statementPointer) throws SQLException;\n\n  /**\n   * Binds a NULL value to the prepared statement at the specified position.\n   *\n   * @param position The index of the SQL parameter to be set to NULL.\n   * @return <a href=\"https://www.sqlite.org/c3ref/c_abort.html\">Result Codes</a>\n   * @throws SQLException If a database access error occurs.\n   */\n  public int bindNull(int position) throws SQLException {\n    final int result = bindNull(statementPointer, position);\n    if (result != 0) {\n      throw new SQLException(\"Exception while binding NULL value at position \" + position);\n    }\n    return result;\n  }\n\n  private native int bindNull(long statementPointer, int position) throws SQLException;\n\n  /**\n   * Binds an integer value to the prepared statement at the specified position. This function calls\n   * bindLong because turso treats all integers as long (as well as SQLite).\n   *\n   * <p>According to SQLite documentation, the value is a signed integer, stored in 0, 1, 2, 3, 4,\n   * 6, or 8 bytes depending on the magnitude of the value.\n   *\n   * @param position The index of the SQL parameter to be set.\n   * @param value The integer value to bind to the parameter.\n   * @return A result code indicating the success or failure of the operation.\n   * @throws SQLException If a database access error occurs.\n   */","sourceCodeStart":102,"sourceCodeEnd":138,"githubUrl":"https://github.com/tursodatabase/turso/blob/244cde92a7df7f9b8b8b7a4075c35a12977e303e/bindings/java/src/main/java/tech/turso/core/TursoStatement.java#L102-L138","documentation":"bindNull(position) calls the native bind and throws when the returned result code is non-zero (SQLite-style result codes, where 0 means SQLITE_OK). Non-zero here almost always means SQLITE_RANGE: the position is outside 1..parameterCount() of the prepared SQL. Positions are 1-based, and bindNull is also the fallback for every null routed through bindObject, so the error frequently surfaces indirectly.","triggerScenarios":"Calling bindNull(0) or a negative position; passing a position greater than the number of '?' placeholders in the SQL; binding on a stale statement pointer after the statement was closed.","commonSituations":"0-based loop indexes from caller code fed directly as positions; SQL text edited to add or remove placeholders while the bind sequence stayed unchanged; reusing a statement after its connection closed.","solutions":["Use 1-based positions: the i-th placeholder is bound with i","Validate against stmt.parameterCount() before binding","Keep the SQL string and its bind calls adjacent in one method so edits stay in sync"],"exampleFix":"// before\nstmt.bindNull(0); // throws\n\n// after\nif (position >= 1 && position <= stmt.parameterCount()) {\n  stmt.bindNull(position); // first '?' is position 1\n}","handlingStrategy":"validation","validationCode":"int paramCount = stmt.parameterCount(); // throws its own SQLException if the statement is dead\nif (position < 1 || position > paramCount) {\n  throw new IllegalArgumentException(\"bind position must be 1..\" + paramCount);\n}\nstmt.bindNull(position);","typeGuard":null,"tryCatchPattern":"try {\n  stmt.bindNull(position);\n} catch (SQLException e) {\n  throw new IllegalArgumentException(\n      \"bind failed for position \" + position + \" (1-based, max \" + safeParamCount(stmt) + \")\", e);\n}","preventionTips":["Treat bind positions as 1-based everywhere in the codebase","Validate positions once in a shared helper using parameterCount()","Keep the SQL string and its bind calls in one method"],"tags":["java","jdbc","prepared-statement","bind","parameter-index"],"backgroundTag":"parameter-bind-failed","analyzedSha":"244cde92a7df7f9b8b8b7a4075c35a12977e303e","analyzedAt":"2026-08-20T07:02:18.389Z","contentChangedAt":"2026-08-20T07:02:18.389Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}