########################################################################
SQL Lua API + MySQL tests
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  $ . ${SBTEST_INCDIR}/mysql_common.sh
  $ . ${SBTEST_INCDIR}/api_sql_common.sh
  drv:name() = mysql
  SQL types:
  NONE = 0
  INT = 3
  CHAR = 11
  VARCHAR = 12
  TIMESTAMP = 10
  TIME = 7
  FLOAT = 5
  TINYINT = 1
  BIGINT = 4
  SMALLINT = 2
  DATE = 8
  DATETIME = 9
  DOUBLE = 6
  --
  SQL error codes:
  NONE = 0
  FATAL = 2
  IGNORABLE = 1
  --
  FATAL: invalid database driver name: 'non-existing'
  failed to initialize the DB driver
  100
  --
  --
  nil bar 0.2
  nil nil 0.1
  1 foo 0.4
  2 nil 0.3
  --
  nil 2
  --
  FATAL: mysql_stmt_prepare() failed
  FATAL: MySQL error: 1146 "Table 'sbtest.nonexisting' doesn't exist"
  SQL API error
  --
  <sql_param>
  <sql_param>
  Unsupported argument type: 8
  nil
  <sql_result>
  <sql_result>
  ALERT: attempt to free an invalid result set
  db_free_results() failed
  db_free_results() failed
  --
  (last message repeated 1 times)
  ALERT: attempt to use an already closed connection
  */api_sql.lua:*: SQL API error (glob)
  ALERT: attempt to close an already closed connection
  --
  4
  301 400 0123456789 0123456789
  --
  1
  2
  --
  reconnects = 1
  FATAL: unable to connect to MySQL server on host 'non-existing', port 3306, aborting...
  FATAL: error 2005: Unknown MySQL server host 'non-existing' (0)
  connection creation failed
  --
  FATAL: mysql_drv_query() returned error 1048 (Column 'a' cannot be null) for query 'INSERT INTO t VALUES (NULL)'
  Got an error descriptor:
    sql_errno = \t1048 (esc)
    connection = \t<sql_connection> (esc)
    query = \tINSERT INTO t VALUES (NULL) (esc)
    sql_state = \t23000 (esc)
    sql_errmsg = \tColumn 'a' cannot be null (esc)
  */api_sql.lua:*: SQL error, errno = 1048, state = '23000': Column 'a' cannot be null (glob)
  FATAL: mysql_drv_query() returned error 1406 (Data too long for column 'a' at row 1) for query 'INSERT INTO t VALUES ('test')'
  Got an error descriptor:
    sql_errno = \t1406 (esc)
    connection = \t<sql_connection> (esc)
    query = \tINSERT INTO t VALUES ('test') (esc)
    sql_state = \t22001 (esc)
    sql_errmsg = \tData too long for column 'a' at row 1 (esc)
  */api_sql.lua:*: SQL error, errno = 1406, state = '22001': Data too long for column 'a' at row 1 (glob)
  FATAL: mysql_drv_query() returned error 1051 (Unknown table '*t') for query 'DROP TABLE t' (glob)
  Got an error descriptor:
    sql_errno = \t1051 (esc)
    connection = \t<sql_connection> (esc)
    query = \tDROP TABLE t (esc)
    sql_state = \t42S02 (esc)
    sql_errmsg = \tUnknown table '*t' (esc) (glob)
  */api_sql.lua:*: SQL error, errno = 1051, state = '42S02': Unknown table '*t' (glob)
  --
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