src/main/protocol-impl/java/com/mysql/cj/protocol/a/SqlTimestampValueEncoder.java [144:167]:
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                return;
            case CHAR:
            case VARCHAR:
            case TINYTEXT:
            case TEXT:
            case MEDIUMTEXT:
            case LONGTEXT:
                StringBuilder sb = new StringBuilder();

                if (binding.getCalendar() != null) {
                    sb.append(TimeUtil.getSimpleDateFormat("yyyy-MM-dd HH:mm:ss", binding.getCalendar()).format(x));
                } else {
                    this.tsdf = TimeUtil.getSimpleDateFormat(this.tsdf, "yyyy-MM-dd HH:mm:ss",
                            binding.getMysqlType() == MysqlType.TIMESTAMP && this.preserveInstants.getValue() ? this.serverSession.getSessionTimeZone()
                                    : this.serverSession.getDefaultTimeZone());
                    sb.append(this.tsdf.format(x));
                }

                if (this.serverSession.getCapabilities().serverSupportsFracSecs() && x.getNanos() > 0) {
                    sb.append('.');
                    sb.append(TimeUtil.formatNanos(x.getNanos(), 6));
                }

                intoPacket.writeBytes(StringSelfDataType.STRING_LENENC, StringUtils.getBytes(sb.toString(), this.charEncoding.getValue()));
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src/main/protocol-impl/java/com/mysql/cj/protocol/a/UtilDateValueEncoder.java [148:171]:
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                return;
            case CHAR:
            case VARCHAR:
            case TINYTEXT:
            case TEXT:
            case MEDIUMTEXT:
            case LONGTEXT:
                StringBuilder sb = new StringBuilder();

                if (binding.getCalendar() != null) {
                    sb.append(TimeUtil.getSimpleDateFormat("yyyy-MM-dd HH:mm:ss", binding.getCalendar()).format(x));
                } else {
                    this.tsdf = TimeUtil.getSimpleDateFormat(this.tsdf, "yyyy-MM-dd HH:mm:ss",
                            binding.getMysqlType() == MysqlType.TIMESTAMP && this.preserveInstants.getValue() ? this.serverSession.getSessionTimeZone()
                                    : this.serverSession.getDefaultTimeZone());
                    sb.append(this.tsdf.format(x));
                }

                if (this.serverSession.getCapabilities().serverSupportsFracSecs() && x.getNanos() > 0) {
                    sb.append('.');
                    sb.append(TimeUtil.formatNanos(x.getNanos(), 6));
                }

                intoPacket.writeBytes(StringSelfDataType.STRING_LENENC, StringUtils.getBytes(sb.toString(), this.charEncoding.getValue()));
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