{"record":{"id":"35abaa36e4776245","repo":"tursodatabase/turso","slug":"exception-while-binding-null-value-at-position","errorCode":null,"errorMessage":"Exception while binding NULL value at position \" + position","messagePattern":"Exception while binding NULL value at position \" \\+ position","errorType":"exception","errorClass":"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/bad083fafbefdeae9a42ec19bdaaad8918dcf411/bindings/java/src/main/java/tech/turso/core/TursoStatement.java#L102-L138","documentation":"TursoStatement.bindNull(position) checks the native bind's result code and throws unless it is 0 (SQLITE_OK). Non-zero typically means the position is outside 1..parameterCount() for the prepared SQL, or the statement is in a state that no longer accepts binds (already stepped without reset, or closed).","triggerScenarios":"Binding with a 0-based position (bindNull(0)); a position beyond the number of ? parameters in the SQL (e.g. bindNull(3) on a query with two placeholders); re-binding a statement for the next batch without calling reset(); binding on a closed statement. Note bindObject(...) routes null values here too.","commonSituations":"for (int i = 0; i < n; i++) stmt.bindNull(i) loops; SQL edited to remove a placeholder while bind code kept the old positions; PreparedStatement.setObject(i, null) on paths that funnel into bindObject; batch re-execution missing reset().","solutions":["Use 1-based positions and verify against stmt.parameterCount() before binding","Call stmt.reset() before re-binding a statement that already stepped or executed","Keep the SQL and the bind sequence in sync — count the ? placeholders when editing queries","Loop parameters with for (int i = 1; i <= stmt.parameterCount(); i++)"],"exampleFix":"// before\nfor (int i = 0; i < n; i++) stmt.bindNull(i); // position 0 -> non-zero result code\n\n// after\nfor (int i = 1; i <= stmt.parameterCount(); i++) {\n  stmt.bindNull(i);\n}","handlingStrategy":"validation","validationCode":"int count = stmt.parameterCount();\nif (position >= 1 && position <= count) {\n  stmt.bindNull(position);\n} else {\n  throw new IllegalArgumentException(\n      \"bind position \" + position + \" outside 1..\" + count);\n}","typeGuard":"static boolean isValidBindPosition(TursoStatement stmt, int position) throws SQLException {\n  return position >= 1 && position <= stmt.parameterCount();\n}","tryCatchPattern":null,"preventionTips":["Always bind with 1-based positions — placeholders are numbered from 1","Call stmt.reset() before re-binding a statement for the next execution","Count the ? placeholders whenever you edit a parameterized query, and prefer parameterCount() over hardcoded counts"],"tags":["java","jdbc","prepared-statement","parameters","bind","bindings"],"backgroundTag":"parameter-bind-failed","analyzedSha":"bad083fafbefdeae9a42ec19bdaaad8918dcf411","analyzedAt":"2026-08-16T23:12:11.798Z","schemaVersion":2},"datasetVersion":"2026-08-17T04:17:16.089Z"}